CA2487406C - Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium - Google Patents
Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium Download PDFInfo
- Publication number
- CA2487406C CA2487406C CA2487406A CA2487406A CA2487406C CA 2487406 C CA2487406 C CA 2487406C CA 2487406 A CA2487406 A CA 2487406A CA 2487406 A CA2487406 A CA 2487406A CA 2487406 C CA2487406 C CA 2487406C
- Authority
- CA
- Canada
- Prior art keywords
- data
- pits
- area
- wobbled
- copy protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 92
- 230000007704 transition Effects 0.000 claims description 45
- 238000003491 array Methods 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 27
- 230000003287 optical effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
- G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/0026—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored as a barcode
- G11B20/00268—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored as a barcode said barcode being recorded in a burst cutting area [BCA]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00297—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD
- G11B20/00304—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD the key being stored in the lead-in area [LIA]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
- G11B20/00601—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium wherein properties of tracks are altered, e.g., by changing the wobble pattern or the track pitch, or by adding interruptions or eccentricity
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
- G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/122—Burst cutting area [BCA]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1238—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
- G11B2020/1238—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
- G11B2020/1239—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located the track being a pregroove, e.g. the wobbled track of a recordable optical disc
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1278—Physical format specifications of the record carrier, e.g. compliance with a specific standard, recording density, number of layers, start of data zone or lead-out
- G11B2020/1279—Permanent information and control data stored in the PIC zone of a Blu-Ray disc
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/213—Read-only discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/216—Rewritable discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/218—Write-once discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
Abstract
A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, which contains copy protection information encoded in intermittent or alternate wobbled pits, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
Description
DESCRIPTION
RECORDING MEDIUM WITH COPY PROTECTION INFORMATION
FORMED IN INTERMITTENT OR ALTERNATE WOBBLED PITS
AND APPARATUS AND METHODS FOR FORMING, RECORDING, AND REPRODUCING THE RECORDING MEDIUM
1. TECHNICAL FIELD
The present invention relates to a recording medium such as BD-ROM (Blu-ray Disc ROM) which has data written in intermittent or alternate wobbled (or zigzag) pits and an apparatus and methods for forming, recording, and reproducing the recording medium.
RECORDING MEDIUM WITH COPY PROTECTION INFORMATION
FORMED IN INTERMITTENT OR ALTERNATE WOBBLED PITS
AND APPARATUS AND METHODS FOR FORMING, RECORDING, AND REPRODUCING THE RECORDING MEDIUM
1. TECHNICAL FIELD
The present invention relates to a recording medium such as BD-ROM (Blu-ray Disc ROM) which has data written in intermittent or alternate wobbled (or zigzag) pits and an apparatus and methods for forming, recording, and reproducing the recording medium.
2. BACKGROUND ART
Recently, the standardization of Blu-ray Disc Rewritable (BD-RE), which is a new high-density rewritable optical disk capable of recording large capacity, high-quality video and audio data, is in progress. BD-RE related products are expected to be available on the market in the near future.
FIG. lA depicts the structure of a ED-RE, wherein a clamping area, a burst cutting area (BCA), a transition area, a lead-in area, a data area, and lead-out area are disposed in order as shown.
As illustrated in FIG. 1B, the BCA is located in the innermost circumferential area of the BD-RE that is accessed first when the disk is loaded into a reproducing apparatus and may contain an information for the disc, such as serial number and other optional information pre-recorded by disc manufacturer.
The lead-in area may comprise several pre-assigned areas such as a first guard (Guard 1) area, a permanent information & control data (PIC) area, a second guard (Guard 2) area, a second information (Info 2) area, and an optimum power calibration (OPC) area. The Guard 1 area and the PIC area are pre-recorded areas in which some initial data is pre-recorded, whereas the other areas of the lead-in area, the data area, and the lead-out areas are all rewritable areas.
In the PIC area, important permanent disc information is encoded in a wobbled groove by high frequency modulation (HFM).
HFM Grooves are modulated in the radial direction with a rather high bandwidth signal, to create a data channel for replicated information with sufficient capacity and data rate.
As depicted in FIG. 2, the wobble-shaped data encoding is performed by bi-phase modulation. In this modulation method a bit with value 0 is represented by a transition at the start of the bit cell and a bit with value 1 is represented by a transition at the start and in the middle of the bit cell. The modulated bits are recorded on the disc by a deviation of the groove from its average centerline as indicated in the FIG.2.
The length of each bit cell shall be 36T, where T corresponds to the length of a channel bit in the Rewritable data areas.
Also, a read-only Blu-ray Disk (BD-ROM) is also under development along with the BD-RE. A BD-ROM may include an inner area, a clamping area, a transition area, an information area, and a rim area, as shown in FIG. 3.
The information area may further comprise a BCA, a lead-in zone, a data zone, a lead-out zone, and an outer zone. As in BD-RE, the BCA may contain disc important information (DII), such as a disc serial number and copy protection information (CPI). If a BD-ROM is copy protected, the DII may be required to decrypt the main data contained on the BD-ROM.
The disc information in the PIC zone may be recorded as straight pits in the same way as main data such as audio/video (A/V) streams are recorded in the data zone. The disc information may be 17PP-modulated data written in the form of an error correction code (ECC) block of size 64 KB, for example.
In this case, however, it takes some demodulation time to retrieve the disc information from the BD-ROM because the disc information may be demodulated by an RF signal detection method.
As described above, the disc information contained in the PIC area of a BD-RE may be encoded in a wobbled groove by HFM.
If the disc information is recorded in the PIC zone of a BD-ROM as straight pits, an optical disk reproducing apparatus should be able to apply different detecting schemes to obtain the disc information depending on the disk type (BD-RE or BD-ROM). Unless the correct scheme is chosen, the optical disk reproducing apparatus will fail to detect the disc information.
For example, if a method for detecting HFM-modulated disc information encoded in a wobbled groove of a BD-RE is applied to a BD-ROM, the optical disk reproducing apparatus will not be able to retrieve the disc information which is recorded in the PIC zone as straight pits.
In addition, if the disc important information (DII) contained in the BCA cannot be retrieved due to a read error, it is impossible to retrieve the data recorded on the disk.
For example, if an error occurs while the copy protection information (CPI) is retrieved from the BCA, it may be impossible to reproduce the main data recorded in the data zone because the data cannot be decrypted.
Also, because the copy protection information (CPI) recorded on PIC area of the disk includes an important data, e.g., key data to decrypt an encrypted main data recorded on the data zone, it should not be detected easily by any illegal device and copied to other recording media to protect the encrypted contents recorded on the disk. It should be only detected by a predetermined detection method in a legally permitted device to ensure a robustness.
3. DISCLOSURE OF INVENTION
In exemplary embodiments, the present invention is directed to a recording medium including recorded data, comprising:
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein control information is encoded along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits.
In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, capable of rapidly detecting disc information required for reproducing the contents recorded thereon, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
in exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as ED-ROM, capable of reproducing main data even if there is a failure in reading disc important information from one or more location on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, including decryption information for decrypting contents recorded on the recording medium in such a way that the decryption information is not copied to other recording media and/or other types of recording media, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
In exemplary embodiments, the present invention is directed to a method of forming a recording medium, comprising:
forming pits in a control data area along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of forming pits includes encoding control information along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of forming pits includes forming the wobbled pit in at least one data unit preceded by the straight pits or followed by the straight pits.
In exemplary embodiments, the present invention is directed to a method of reproducing data from a recording medium, comprising:
Recently, the standardization of Blu-ray Disc Rewritable (BD-RE), which is a new high-density rewritable optical disk capable of recording large capacity, high-quality video and audio data, is in progress. BD-RE related products are expected to be available on the market in the near future.
FIG. lA depicts the structure of a ED-RE, wherein a clamping area, a burst cutting area (BCA), a transition area, a lead-in area, a data area, and lead-out area are disposed in order as shown.
As illustrated in FIG. 1B, the BCA is located in the innermost circumferential area of the BD-RE that is accessed first when the disk is loaded into a reproducing apparatus and may contain an information for the disc, such as serial number and other optional information pre-recorded by disc manufacturer.
The lead-in area may comprise several pre-assigned areas such as a first guard (Guard 1) area, a permanent information & control data (PIC) area, a second guard (Guard 2) area, a second information (Info 2) area, and an optimum power calibration (OPC) area. The Guard 1 area and the PIC area are pre-recorded areas in which some initial data is pre-recorded, whereas the other areas of the lead-in area, the data area, and the lead-out areas are all rewritable areas.
In the PIC area, important permanent disc information is encoded in a wobbled groove by high frequency modulation (HFM).
HFM Grooves are modulated in the radial direction with a rather high bandwidth signal, to create a data channel for replicated information with sufficient capacity and data rate.
As depicted in FIG. 2, the wobble-shaped data encoding is performed by bi-phase modulation. In this modulation method a bit with value 0 is represented by a transition at the start of the bit cell and a bit with value 1 is represented by a transition at the start and in the middle of the bit cell. The modulated bits are recorded on the disc by a deviation of the groove from its average centerline as indicated in the FIG.2.
The length of each bit cell shall be 36T, where T corresponds to the length of a channel bit in the Rewritable data areas.
Also, a read-only Blu-ray Disk (BD-ROM) is also under development along with the BD-RE. A BD-ROM may include an inner area, a clamping area, a transition area, an information area, and a rim area, as shown in FIG. 3.
The information area may further comprise a BCA, a lead-in zone, a data zone, a lead-out zone, and an outer zone. As in BD-RE, the BCA may contain disc important information (DII), such as a disc serial number and copy protection information (CPI). If a BD-ROM is copy protected, the DII may be required to decrypt the main data contained on the BD-ROM.
The disc information in the PIC zone may be recorded as straight pits in the same way as main data such as audio/video (A/V) streams are recorded in the data zone. The disc information may be 17PP-modulated data written in the form of an error correction code (ECC) block of size 64 KB, for example.
In this case, however, it takes some demodulation time to retrieve the disc information from the BD-ROM because the disc information may be demodulated by an RF signal detection method.
As described above, the disc information contained in the PIC area of a BD-RE may be encoded in a wobbled groove by HFM.
If the disc information is recorded in the PIC zone of a BD-ROM as straight pits, an optical disk reproducing apparatus should be able to apply different detecting schemes to obtain the disc information depending on the disk type (BD-RE or BD-ROM). Unless the correct scheme is chosen, the optical disk reproducing apparatus will fail to detect the disc information.
For example, if a method for detecting HFM-modulated disc information encoded in a wobbled groove of a BD-RE is applied to a BD-ROM, the optical disk reproducing apparatus will not be able to retrieve the disc information which is recorded in the PIC zone as straight pits.
In addition, if the disc important information (DII) contained in the BCA cannot be retrieved due to a read error, it is impossible to retrieve the data recorded on the disk.
For example, if an error occurs while the copy protection information (CPI) is retrieved from the BCA, it may be impossible to reproduce the main data recorded in the data zone because the data cannot be decrypted.
Also, because the copy protection information (CPI) recorded on PIC area of the disk includes an important data, e.g., key data to decrypt an encrypted main data recorded on the data zone, it should not be detected easily by any illegal device and copied to other recording media to protect the encrypted contents recorded on the disk. It should be only detected by a predetermined detection method in a legally permitted device to ensure a robustness.
3. DISCLOSURE OF INVENTION
In exemplary embodiments, the present invention is directed to a recording medium including recorded data, comprising:
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein control information is encoded along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits.
In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, capable of rapidly detecting disc information required for reproducing the contents recorded thereon, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
in exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as ED-ROM, capable of reproducing main data even if there is a failure in reading disc important information from one or more location on the recording medium, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
In exemplary embodiments, the present invention is directed to a recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, including decryption information for decrypting contents recorded on the recording medium in such a way that the decryption information is not copied to other recording media and/or other types of recording media, and to methods and apparatuses for forming, recording, and reproducing data on the recording medium.
In exemplary embodiments, the present invention is directed to a method of forming a recording medium, comprising:
forming pits in a control data area along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of forming pits includes encoding control information along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of forming pits includes forming the wobbled pit in at least one data unit preceded by the straight pits or followed by the straight pits.
In exemplary embodiments, the present invention is directed to a method of reproducing data from a recording medium, comprising:
detecting data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of detecting data includes detecting control information encoded along the wobbled pits in such a way that data bit "0" and "1"
comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of detecting control information includes detecting the wobbled pits from at least one data unit preceded by the straight pits or followed by the straight pits;
and utilizing the control information to reproduce main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
Another embodiment of the invention concerns an apparatus for reproducing data from a recording medium, said apparatus comprising:
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are recorded intermittently and alternately with the straight pits, wherein control information is encoded along the wobbled pits in such a way that data bit "0"
and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits, and wherein the detection unit converts signals reflected from the pits into electric signals; and a signal processor, coupled to the detection unit, to process the electric signals to generate the control information and to process main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
Yet another embodiment of the invention concerns a recording medium including recorded data, comprising:
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area; and a main data area including main data recorded with modulation in straight pits formed along tracks, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of the main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period.
Still another embodiment of the invention concerns a method of reproducing data from a recording medium, comprising:
comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of detecting control information includes detecting the wobbled pits from at least one data unit preceded by the straight pits or followed by the straight pits;
and utilizing the control information to reproduce main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
Another embodiment of the invention concerns an apparatus for reproducing data from a recording medium, said apparatus comprising:
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are recorded intermittently and alternately with the straight pits, wherein control information is encoded along the wobbled pits in such a way that data bit "0"
and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits, and wherein the detection unit converts signals reflected from the pits into electric signals; and a signal processor, coupled to the detection unit, to process the electric signals to generate the control information and to process main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
Yet another embodiment of the invention concerns a recording medium including recorded data, comprising:
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area; and a main data area including main data recorded with modulation in straight pits formed along tracks, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of the main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period.
Still another embodiment of the invention concerns a method of reproducing data from a recording medium, comprising:
detecting data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period; and generating the control information in the unit of frame to reproduce the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
Yet another embodiment of the invention concerns an apparatus for reproducing data from a recording medium, said apparatus comprising:
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are formed as straight pits, wherein the wobbled pits are recorded intermittent or alternate with the straight pits, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being 7a formed in unit of frame, the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period, wherein the detection unit configured to convert signals reflected from the pits into electric signals and generating data from the electrical signals;
and a data processor configured to process the control information in the unit of frame from the data and to process the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium by using the control information.
Still another embodiment of the invention concerns a recording medium, comprising:
first area for storing control information required basically for recording or reproducing user data; and second area for storing copy protection information for use in generating or processing copy protected user data, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific 7b data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern in the second area.
Yet another embodiment of the invention concerns a method of recording data on a recording medium, comprising:
recording control information required basically for recording or reproducing user data in a first area; and recording copy protection information for use in generating or processing copy protected user data in another area different from a second area, the step of recording copy protection information comprising copying the 'copy protection information from the second area to said another area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in first specific data unit is different from data structure of the copy protection information in second specific data unit in the second area with respect to a modulation method.
Still another embodiment concerns a method of reproducing data from a recording medium, comprising:
reading control information required basically for reproducing user data from a first area; and detecting copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user 7c data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern.
Yet another embodiment concerns an apparatus for reproducing data from a recording medium, comprising:
a detection unit configured to detect control information required basically for reproducing user data from a first area and copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern and the control information in the first area and the copy protection information in the second area are recorded separately;
and a controller configured to control the detection unit to detect the control information from the first area and the copy protection information from the second area.
7d Still another embodiment of the invention concerns a method of recording data on a recording medium, comprising:
recording copy protected user data encrypted by copy protection information;
recording control information required for reproducing the copy protected user data in a first area; and recording the copy protection information for decrypting the copy protected user data in a second area, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in the first specific data unit is different- from data structure of the copy protection information in the second specific data unit in the second area with respect to a modulation method.
4. BRIEF DESCRIPTION OF DRAWINGS
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate exemplary embodiments of the invention, and together with the description, serve to explain the principles of the present invention.
In the drawings:
FIGS. 1A and 1B illustrate the structure of a conventional BD-RE;
FIG. 2 illustrates a high-frequency modulated (HFM) groove formed in the PIC area of a BD-RE;
FIG. 3 illustrates areas assigned to a BD-ROM;
FIGS. 4A-4F illustrate several formats of data recorded in the PIC zone of a BD-ROM in accordance with exemplary embodiments of the invention;
7e FIG. 5 illustrates an example in which the copy protection information is encoded in intermittently formed arrays of wobbled pits in an exemplary embodiment of the present invention;
FIG. 6 illustrates the data structure of a physical cluster of a BD-ROM in an exemplary embodiment of the present invention;
FIG. 7 illustrates information encoded in wobbled pits and a circuit for detecting the information in an exemplary embodiment of the present invention;
FIG. 8 illustrates information encoded in straight pits and a circuit for detecting the information in an exemplary embodiment of the present invention;
FIG. 9 illustrates disc information fields recorded on a BD-ROM in an exemplary embodiment of the present invention;
FIG. 10 illustrates disc type information recorded in the 7f BCA in accordance with an exemplary embodiment of the invention; and FIG. 11 illustrates a schematic diagram of an optical disk reproducing apparatus capable of reproducing a BD-ROM in accordance with an exemplary embodiment of the present invention.
5. MODES FOR CARRYING OUT THE INVENTION
In order that the invention may be fully understood, exemplary embodiments thereof will now be described with reference to the accompanying drawings.
The BD-ROM in accordance with exemplary embodiments of the invention may include an inner area, a clamping area, a transition area, an information area, and a rim area, as described above with reference to FIG. 3. As illustrated in FIG. 4A, the DII, such as a disc serial number and copy protection information recorded in the BCA, is copied to the PIC zone contained in the information area at least once. The copy protection information can be a key value required to decrypt the encrypted main data of A/V streams recorded in the data zone.
The copy protection information may not be recorded in the BCA and be only recorded in the PIC zone, which is illustrated in FIG. 4B. The copy protection information may also be called a 'ROM mark' and may contain an additional flag (CPI flag) indicating whether the copy protection information is recorded.
As depicted in FIG. 4C, the information contained in the PIC may be recorded partly as wobbled pits (or zigzag pits) and partly as straight pits. The main data may be recorded in the data zone as straight pits.
In an exemplary embodiment, the PIC zone may contain 2,720 clusters of data. The first cluster may contain disc information recorded as wobbled pits by bi-phase modulation.
The other clusters may contain 17PP modulated disc information and copy protection information having ECC blocks of size 64 KB and recorded as straight pits, for example the disc information recorded as wobbled pits may be detected by a push-pull signal detecting method and the disc information and copy protection information recorded as straight pits may be detected by an RF signal detecting method. The push-pull signal typically has lower frequency components than the RF
signal.
In an exemplary embodiment, the DII additionally copied to the PIC zone can be encoded in wobbled pits to prevent it from being detected by the RF signal detecting method.
FIGS. 4D, 4E, and 4F illustrate several different exemplary data formats. In FIG. 4D, the DII is encoded in wobbled pits and disc information is recorded as straight pits.
In FIG. 4E, the DII and a part of the disc information are encoded in wobbled pits. In FIG. 4F, both of the DII and disc information are encoded in wobbled pits.
The copy protection information, in one example, the ROM
mark, may be encoded in intermittently formed wobbled pits to prevent it from being easily detected by common detecting methods, while the data recorded on the data zone is formed of straight pit.
FIG. 5 illustrates an exemplary embodiment of the present invention, where the copy protection information is encoded in intermittently formed arrays of wobbled pits.
As shown in FIG.5, it is preferable that intermittent wobble structure is recorded on the area instead of a continuous wobble pit structure in order to ensure the secret or the robustness, such that it prevents a copy protection information from being easily detected by the common detecting method.
Yet another embodiment of the invention concerns an apparatus for reproducing data from a recording medium, said apparatus comprising:
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are formed as straight pits, wherein the wobbled pits are recorded intermittent or alternate with the straight pits, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being 7a formed in unit of frame, the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period, wherein the detection unit configured to convert signals reflected from the pits into electric signals and generating data from the electrical signals;
and a data processor configured to process the control information in the unit of frame from the data and to process the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium by using the control information.
Still another embodiment of the invention concerns a recording medium, comprising:
first area for storing control information required basically for recording or reproducing user data; and second area for storing copy protection information for use in generating or processing copy protected user data, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific 7b data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern in the second area.
Yet another embodiment of the invention concerns a method of recording data on a recording medium, comprising:
recording control information required basically for recording or reproducing user data in a first area; and recording copy protection information for use in generating or processing copy protected user data in another area different from a second area, the step of recording copy protection information comprising copying the 'copy protection information from the second area to said another area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in first specific data unit is different from data structure of the copy protection information in second specific data unit in the second area with respect to a modulation method.
Still another embodiment concerns a method of reproducing data from a recording medium, comprising:
reading control information required basically for reproducing user data from a first area; and detecting copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user 7c data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern.
Yet another embodiment concerns an apparatus for reproducing data from a recording medium, comprising:
a detection unit configured to detect control information required basically for reproducing user data from a first area and copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern and the control information in the first area and the copy protection information in the second area are recorded separately;
and a controller configured to control the detection unit to detect the control information from the first area and the copy protection information from the second area.
7d Still another embodiment of the invention concerns a method of recording data on a recording medium, comprising:
recording copy protected user data encrypted by copy protection information;
recording control information required for reproducing the copy protected user data in a first area; and recording the copy protection information for decrypting the copy protected user data in a second area, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in the first specific data unit is different- from data structure of the copy protection information in the second specific data unit in the second area with respect to a modulation method.
4. BRIEF DESCRIPTION OF DRAWINGS
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate exemplary embodiments of the invention, and together with the description, serve to explain the principles of the present invention.
In the drawings:
FIGS. 1A and 1B illustrate the structure of a conventional BD-RE;
FIG. 2 illustrates a high-frequency modulated (HFM) groove formed in the PIC area of a BD-RE;
FIG. 3 illustrates areas assigned to a BD-ROM;
FIGS. 4A-4F illustrate several formats of data recorded in the PIC zone of a BD-ROM in accordance with exemplary embodiments of the invention;
7e FIG. 5 illustrates an example in which the copy protection information is encoded in intermittently formed arrays of wobbled pits in an exemplary embodiment of the present invention;
FIG. 6 illustrates the data structure of a physical cluster of a BD-ROM in an exemplary embodiment of the present invention;
FIG. 7 illustrates information encoded in wobbled pits and a circuit for detecting the information in an exemplary embodiment of the present invention;
FIG. 8 illustrates information encoded in straight pits and a circuit for detecting the information in an exemplary embodiment of the present invention;
FIG. 9 illustrates disc information fields recorded on a BD-ROM in an exemplary embodiment of the present invention;
FIG. 10 illustrates disc type information recorded in the 7f BCA in accordance with an exemplary embodiment of the invention; and FIG. 11 illustrates a schematic diagram of an optical disk reproducing apparatus capable of reproducing a BD-ROM in accordance with an exemplary embodiment of the present invention.
5. MODES FOR CARRYING OUT THE INVENTION
In order that the invention may be fully understood, exemplary embodiments thereof will now be described with reference to the accompanying drawings.
The BD-ROM in accordance with exemplary embodiments of the invention may include an inner area, a clamping area, a transition area, an information area, and a rim area, as described above with reference to FIG. 3. As illustrated in FIG. 4A, the DII, such as a disc serial number and copy protection information recorded in the BCA, is copied to the PIC zone contained in the information area at least once. The copy protection information can be a key value required to decrypt the encrypted main data of A/V streams recorded in the data zone.
The copy protection information may not be recorded in the BCA and be only recorded in the PIC zone, which is illustrated in FIG. 4B. The copy protection information may also be called a 'ROM mark' and may contain an additional flag (CPI flag) indicating whether the copy protection information is recorded.
As depicted in FIG. 4C, the information contained in the PIC may be recorded partly as wobbled pits (or zigzag pits) and partly as straight pits. The main data may be recorded in the data zone as straight pits.
In an exemplary embodiment, the PIC zone may contain 2,720 clusters of data. The first cluster may contain disc information recorded as wobbled pits by bi-phase modulation.
The other clusters may contain 17PP modulated disc information and copy protection information having ECC blocks of size 64 KB and recorded as straight pits, for example the disc information recorded as wobbled pits may be detected by a push-pull signal detecting method and the disc information and copy protection information recorded as straight pits may be detected by an RF signal detecting method. The push-pull signal typically has lower frequency components than the RF
signal.
In an exemplary embodiment, the DII additionally copied to the PIC zone can be encoded in wobbled pits to prevent it from being detected by the RF signal detecting method.
FIGS. 4D, 4E, and 4F illustrate several different exemplary data formats. In FIG. 4D, the DII is encoded in wobbled pits and disc information is recorded as straight pits.
In FIG. 4E, the DII and a part of the disc information are encoded in wobbled pits. In FIG. 4F, both of the DII and disc information are encoded in wobbled pits.
The copy protection information, in one example, the ROM
mark, may be encoded in intermittently formed wobbled pits to prevent it from being easily detected by common detecting methods, while the data recorded on the data zone is formed of straight pit.
FIG. 5 illustrates an exemplary embodiment of the present invention, where the copy protection information is encoded in intermittently formed arrays of wobbled pits.
As shown in FIG.5, it is preferable that intermittent wobble structure is recorded on the area instead of a continuous wobble pit structure in order to ensure the secret or the robustness, such that it prevents a copy protection information from being easily detected by the common detecting method.
In FIG. 5, arrays of straight pits (An) and arrays of wobbled pits (En) are formed alternately and the arrays of straight pits are longer length than the arrays of wobbled pits to have a different duration. Consequently, the wobbled pits in which the copy protection information is encoded are considered noise signals by common detecting methods.
All of the arrays of straight pits can be made to have the same length and all of the arrays of wobbled pits can be made to have the same length. If the arrays of pits are of different length, that is, if An#Am (n#m) and Bn#Bm (n#m) , the occurrence of the arrays of wobbled pits is not periodic.
This can enhance the security of the copy protection information in that the probability that special information is encoded in wobbled pits becomes lower.
There are various other modulation methods that can be employed to encode the copy protection information in wobbled pits. Analog modulation methods include amplitude modulation (AM), frequency modulation (FM) and digital modulation methods include pulse code modulation (PCM), minimum shift keying (MSK), and binary phase shift keying (BPSK).
Although the same modulation technique can be applied to all arrays of wobbled pits, arrays of wobbled pits can be encoded by different modulation techniques to enhance the security of the copy protection information. In FIG. 5, for example, the first wobbled-pit array, B1, may be encoded by AM
and the second wobbled-pit array, B2, may be encoded by FM, etc.
To decrease possible data read errors, in an exemplary embodiment the same data be repeatedly encoded in arrays of wobbled pits.
And said region of wobble pit and said region of no wobble pit are combined or a plurality of regions are combined and then a bit for copy protection can be detected. For example, recording region of wobble pit corresponding to the data bit is recorded dispersedly to several regions, and the wobble pits is formed such that the amplitude of wobble are small, and then the bit can be detected by detecting a pushpull signal of low level and integrating the signal.
In an exemplary embodiment, the copy protection information has a size of no more than 128 bits, but if header information and redundant data for ECC are appended, the size can increase up to 1 KB.
As shown in FIG. 6, a physical cluster of the BD-ROM may have an exemplary size of 64 KB and includes 16 address units.
Each address unit may further include 31 data frames. As a result, if the first data frame (Data Frame #0) of each address unit is encoded in wobbled pits to record a byte of the copy protection information, a physical cluster can store up to 16 bytes.
Hence, the copy protection information of size 1 KB can be contained in 64 clusters. If an exemplary PIC zone may include 2,720 clusters, the PIC zone will have enough space to store the copy protection information at least one. Further, the copy protection information can be recorded in the PIC
zone more than once to enhance reliability of the recorded data.
In other exemplary embodiments, it is also possible to form data frames other than the first data frame of each address unit as wobbled pits or more than two data frames of each address unit as wobbled pits to encode the copy protection information.
Instead of encoding the copy protection information in a fixed data frame within each address unit, the information can also be encoded in an arbitrary data frame within each address unit. In this exemplary embodiment, the occurrence of low-frequency signals created by the wobbled pits is not of periodic nature and thus it can enhance the information security as described above.
The copy protection information can also be recorded as straight pits. In this exemplary embodiment, the copy protection information can be encrypted before being recorded and a key value to decrypt the encrypted copy protection information can be encoded in wobbled pits, thereby preventing illegal copying of the contents.
FIG. 7 illustrates the disc information encoded in wobbled pits by bi-phase modulation and a circuit for detecting the information, wherein an exemplary value of 10101' is encoded in bi-phase modulated form, e.g., bi- phase modulated HFM Groove, along with wobbled pits. In this example, a data bit is recorded as marks and spaces of length 36T
including six 3T marks. Six pits representing '1' and six pits representing 10' are shifted from the track center in the opposite directions.
As shown in FIG. 7. the structure by bi-phase modulation is different from the structure illustrated in FIG.2. That is, the method of FIG.2 has a bit with value 0, which is represented by a transition at the start of the bit cell and a bit with value 1, which is represented by a transition at the start and in the middle of the bit cell. Otherwise, the method of FIG.7 has ,a bit with value 0, which is represented by a transition at the start of low and in the middle of high, and a bit with value 1, which is represented by the transition in the opposite direction. The combination of bits consists of data to detect information recorded as wobbled pit. The information can be copy protection information, i.e., key data to decrypt main data recorded on the data zone of the recording medium as shown in FIG.4A to 4F
That is, the wobbled pit data can be reproduced or detected only when the bi-phased modulation data modulated by HFM is detected or reproduced normally. And also, reproduction or decryption of main data is possible only when the wobbled pit data for copy protection is reproduced or detected using the normally detected or reproduced bi-phase modulation data.
In meantime, if the information is encoded in pits, the occurrence of successive pits of the same length may not be allowed and thus pits of different length appear one after another. In this exemplary embodiment, the positions of data pits may also be shifted at intervals of 18 T to encode data in wobbled pits.
The laser beam reflected by the wobbled pits is converted into electric signals by photo detectors 13-16.
The electric signals may be amplified by a push-pull detecting circuit, wherein Ea+Eb and Ec+Ed are amplified separately by amplifiers 10 and 11 and then the difference signal ((Ea+Eb)-(Ec+Ed)) between the two amplified signals is generated by a differential amplifier 12. The data encoded in the wobbled pits is obtained by comparing the difference signal 501 with a threshold level.
Similarly, the DII and/or disc information (or other information) encoded in wobbled pits can be obtained by a push-pull circuit that is used to create the tracking error signal, with no additional error correction and demodulation processes.
If an error due to scratches or other disc deformities occurs when accessing the BCA of a BD-ROM, the DII can be retrieved from the PIC zone and data recorded on the disk can be reproduced using the retrieved information. As a result, the main data recorded in the data zone may be decrypted using a decryption key contained in the DII recorded in the PIC zone.
Since the data encoded in wobbled pits, for example, DII
and/or disc information, is not obtained by demodulation, it is not copied when the contents of the ED-ROM is copied to another rewritable medium and therefore the encrypted data copied to the rewritable medium cannot be decrypted, thereby preventing illegal copying of the BD-ROM contents.
The disc information and copy protection information encoded in straight pits as shown in FIGS. 4C-4E may be detected by the circuit depicted in FIG. 8.
The laser beam reflected by the straight pits is converted into electric signals by photo detectors 13-16 and the electric signals (Ea, Eb, Ec, and Ed) are added together with amplification by one or more summing amplifiers 20, 21, and 22. The RF signal, Ea + Eb + Ec + Ed, which is the output of the summing amplifier 22, is converted into a binary pulse train by an RF unit 23 and converted into digital data by a clock signal synchronized with the binary signal. The original disc information and copy protection information are obtained from the digital data by an ECC & demodulator 24.
The disc information and copy protection information encoded in straight pits can be read in the same way that the main data recorded in the data zone is read.
The disc information may include a disc information ID, a disc information format, a disc type ID, disc size/version, etc, as shown in FIG. 9. An exemplary 3-byte disc type ID
indicative of the type of the optical disk can be recorded in the BCA as 2-bit data, as shown in FIG. 10.
For example, if the 2-bit data is 00b, the corresponding optical disk is a BD-RE. If the data is Olb, the corresponding optical disk is a one-time recordable BD-R. If the data is lob, the corresponding optical disk is a BD-ROM.
The disc information size and a flag indicating whether it is the last disc information can be assigned to a reserved field of the disc information.
FIG. 11 illustrates a schematic diagram of a general optical disk reproducing apparatus including an optical pickup 30, a video disc play (VDP) system 31, and a D/A converter 32.
Once an optical disk is loaded, the VDP system 31, which performs signal processing and servo control, detects the disk type information recorded in the BCA and performs appropriate servo initialization according to the detected disk type.
The VDP system 31 can detect the disc information encoded in wobbled pits, e.g., a key data to encrypt and/or decrypt the main data of data zone, in the PIC zone from the push-pull signal.
Where the disc information size and a flag indicating whether it is the last disc information are assigned to a reserved field, the disc information and copy protection information recorded in the PIC zone can be detected more accurately using the information in the reserved field.
In another exemplary embodiment, it is possible that a transition zone for separately detecting the disc information and the copy protection information is allocated to the PIC
zone.
If the copy protection information is encrypted and encoded in straight pits, the VDP system 31 detects the decryption key encoded in wobbled pits in the PIC zone as described in FIG. 7, decrypts the copy protection information read from the straight pits, and stores the decrypted copy protection information. When the main data recorded in the data zone is reproduced, the main data is decrypted using the stored copy protection information.
The high-density, read-only, and/or optical disk and disc information recording method therefore in accordance with exemplary embodiments of the invention may repeatedly record important information required for the protection of the contents recorded on the disk and encode the information in wobbled pits, thereby enhancing data reliability and preventing illegal copying of the contents of the disk.
Although certain exemplary embodiments of the present invention have been disclosed, it is noted that the present invention may be embodied in other forms without departing from the spirit or essential characteristics thereof. The exemplary embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
All of the arrays of straight pits can be made to have the same length and all of the arrays of wobbled pits can be made to have the same length. If the arrays of pits are of different length, that is, if An#Am (n#m) and Bn#Bm (n#m) , the occurrence of the arrays of wobbled pits is not periodic.
This can enhance the security of the copy protection information in that the probability that special information is encoded in wobbled pits becomes lower.
There are various other modulation methods that can be employed to encode the copy protection information in wobbled pits. Analog modulation methods include amplitude modulation (AM), frequency modulation (FM) and digital modulation methods include pulse code modulation (PCM), minimum shift keying (MSK), and binary phase shift keying (BPSK).
Although the same modulation technique can be applied to all arrays of wobbled pits, arrays of wobbled pits can be encoded by different modulation techniques to enhance the security of the copy protection information. In FIG. 5, for example, the first wobbled-pit array, B1, may be encoded by AM
and the second wobbled-pit array, B2, may be encoded by FM, etc.
To decrease possible data read errors, in an exemplary embodiment the same data be repeatedly encoded in arrays of wobbled pits.
And said region of wobble pit and said region of no wobble pit are combined or a plurality of regions are combined and then a bit for copy protection can be detected. For example, recording region of wobble pit corresponding to the data bit is recorded dispersedly to several regions, and the wobble pits is formed such that the amplitude of wobble are small, and then the bit can be detected by detecting a pushpull signal of low level and integrating the signal.
In an exemplary embodiment, the copy protection information has a size of no more than 128 bits, but if header information and redundant data for ECC are appended, the size can increase up to 1 KB.
As shown in FIG. 6, a physical cluster of the BD-ROM may have an exemplary size of 64 KB and includes 16 address units.
Each address unit may further include 31 data frames. As a result, if the first data frame (Data Frame #0) of each address unit is encoded in wobbled pits to record a byte of the copy protection information, a physical cluster can store up to 16 bytes.
Hence, the copy protection information of size 1 KB can be contained in 64 clusters. If an exemplary PIC zone may include 2,720 clusters, the PIC zone will have enough space to store the copy protection information at least one. Further, the copy protection information can be recorded in the PIC
zone more than once to enhance reliability of the recorded data.
In other exemplary embodiments, it is also possible to form data frames other than the first data frame of each address unit as wobbled pits or more than two data frames of each address unit as wobbled pits to encode the copy protection information.
Instead of encoding the copy protection information in a fixed data frame within each address unit, the information can also be encoded in an arbitrary data frame within each address unit. In this exemplary embodiment, the occurrence of low-frequency signals created by the wobbled pits is not of periodic nature and thus it can enhance the information security as described above.
The copy protection information can also be recorded as straight pits. In this exemplary embodiment, the copy protection information can be encrypted before being recorded and a key value to decrypt the encrypted copy protection information can be encoded in wobbled pits, thereby preventing illegal copying of the contents.
FIG. 7 illustrates the disc information encoded in wobbled pits by bi-phase modulation and a circuit for detecting the information, wherein an exemplary value of 10101' is encoded in bi-phase modulated form, e.g., bi- phase modulated HFM Groove, along with wobbled pits. In this example, a data bit is recorded as marks and spaces of length 36T
including six 3T marks. Six pits representing '1' and six pits representing 10' are shifted from the track center in the opposite directions.
As shown in FIG. 7. the structure by bi-phase modulation is different from the structure illustrated in FIG.2. That is, the method of FIG.2 has a bit with value 0, which is represented by a transition at the start of the bit cell and a bit with value 1, which is represented by a transition at the start and in the middle of the bit cell. Otherwise, the method of FIG.7 has ,a bit with value 0, which is represented by a transition at the start of low and in the middle of high, and a bit with value 1, which is represented by the transition in the opposite direction. The combination of bits consists of data to detect information recorded as wobbled pit. The information can be copy protection information, i.e., key data to decrypt main data recorded on the data zone of the recording medium as shown in FIG.4A to 4F
That is, the wobbled pit data can be reproduced or detected only when the bi-phased modulation data modulated by HFM is detected or reproduced normally. And also, reproduction or decryption of main data is possible only when the wobbled pit data for copy protection is reproduced or detected using the normally detected or reproduced bi-phase modulation data.
In meantime, if the information is encoded in pits, the occurrence of successive pits of the same length may not be allowed and thus pits of different length appear one after another. In this exemplary embodiment, the positions of data pits may also be shifted at intervals of 18 T to encode data in wobbled pits.
The laser beam reflected by the wobbled pits is converted into electric signals by photo detectors 13-16.
The electric signals may be amplified by a push-pull detecting circuit, wherein Ea+Eb and Ec+Ed are amplified separately by amplifiers 10 and 11 and then the difference signal ((Ea+Eb)-(Ec+Ed)) between the two amplified signals is generated by a differential amplifier 12. The data encoded in the wobbled pits is obtained by comparing the difference signal 501 with a threshold level.
Similarly, the DII and/or disc information (or other information) encoded in wobbled pits can be obtained by a push-pull circuit that is used to create the tracking error signal, with no additional error correction and demodulation processes.
If an error due to scratches or other disc deformities occurs when accessing the BCA of a BD-ROM, the DII can be retrieved from the PIC zone and data recorded on the disk can be reproduced using the retrieved information. As a result, the main data recorded in the data zone may be decrypted using a decryption key contained in the DII recorded in the PIC zone.
Since the data encoded in wobbled pits, for example, DII
and/or disc information, is not obtained by demodulation, it is not copied when the contents of the ED-ROM is copied to another rewritable medium and therefore the encrypted data copied to the rewritable medium cannot be decrypted, thereby preventing illegal copying of the BD-ROM contents.
The disc information and copy protection information encoded in straight pits as shown in FIGS. 4C-4E may be detected by the circuit depicted in FIG. 8.
The laser beam reflected by the straight pits is converted into electric signals by photo detectors 13-16 and the electric signals (Ea, Eb, Ec, and Ed) are added together with amplification by one or more summing amplifiers 20, 21, and 22. The RF signal, Ea + Eb + Ec + Ed, which is the output of the summing amplifier 22, is converted into a binary pulse train by an RF unit 23 and converted into digital data by a clock signal synchronized with the binary signal. The original disc information and copy protection information are obtained from the digital data by an ECC & demodulator 24.
The disc information and copy protection information encoded in straight pits can be read in the same way that the main data recorded in the data zone is read.
The disc information may include a disc information ID, a disc information format, a disc type ID, disc size/version, etc, as shown in FIG. 9. An exemplary 3-byte disc type ID
indicative of the type of the optical disk can be recorded in the BCA as 2-bit data, as shown in FIG. 10.
For example, if the 2-bit data is 00b, the corresponding optical disk is a BD-RE. If the data is Olb, the corresponding optical disk is a one-time recordable BD-R. If the data is lob, the corresponding optical disk is a BD-ROM.
The disc information size and a flag indicating whether it is the last disc information can be assigned to a reserved field of the disc information.
FIG. 11 illustrates a schematic diagram of a general optical disk reproducing apparatus including an optical pickup 30, a video disc play (VDP) system 31, and a D/A converter 32.
Once an optical disk is loaded, the VDP system 31, which performs signal processing and servo control, detects the disk type information recorded in the BCA and performs appropriate servo initialization according to the detected disk type.
The VDP system 31 can detect the disc information encoded in wobbled pits, e.g., a key data to encrypt and/or decrypt the main data of data zone, in the PIC zone from the push-pull signal.
Where the disc information size and a flag indicating whether it is the last disc information are assigned to a reserved field, the disc information and copy protection information recorded in the PIC zone can be detected more accurately using the information in the reserved field.
In another exemplary embodiment, it is possible that a transition zone for separately detecting the disc information and the copy protection information is allocated to the PIC
zone.
If the copy protection information is encrypted and encoded in straight pits, the VDP system 31 detects the decryption key encoded in wobbled pits in the PIC zone as described in FIG. 7, decrypts the copy protection information read from the straight pits, and stores the decrypted copy protection information. When the main data recorded in the data zone is reproduced, the main data is decrypted using the stored copy protection information.
The high-density, read-only, and/or optical disk and disc information recording method therefore in accordance with exemplary embodiments of the invention may repeatedly record important information required for the protection of the contents recorded on the disk and encode the information in wobbled pits, thereby enhancing data reliability and preventing illegal copying of the contents of the disk.
Although certain exemplary embodiments of the present invention have been disclosed, it is noted that the present invention may be embodied in other forms without departing from the spirit or essential characteristics thereof. The exemplary embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (71)
1. A recording medium including recorded data, comprising:
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein control information is encoded along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits.
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein control information is encoded along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits.
2. The recording medium according to claim 1, wherein the control information in the control data area is recorded along the wobbled pits while being encoded by bi-phased modulation.
3. The recording medium according to claim 1, wherein the control information includes protection information used for controlling reproduction and/or recording of main data.
4. The recording medium according to claim 3, wherein the protection information is repeatedly encoded in plural arrays of the wobbled pits.
5. The recording medium according to claim 1, wherein the control data area comprises arrays of the wobbled pits and arrays of the strait pits periodically.
6. The recording medium according to claim 1, wherein arrays of the wobbled pits and arrays of the straight pits in the control data area are of different length.
7. The recording medium according to claim 1, further comprising:
a main data area including main data recorded with modulation in straight pits formed along tracks.
a main data area including main data recorded with modulation in straight pits formed along tracks.
8. The recording medium according to claim 1, wherein the wobbled pits are formed in more than two data units different from a first data unit.
9. The recording medium according to claim 8, wherein the plurality of data units comprise one address unit, and the wobbled pits are formed in more than two data units different from the first data unit within the address unit.
10. The recording medium according to claim 9, wherein the wobbled pits are formed in a plurality of address units.
11. A method of forming a recording medium, comprising:
forming pits in a control data area along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of forming pits includes encoding control information along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of forming pits includes forming the wobbled pit in at least one data unit preceded by the straight pits or followed by the straight pits.
forming pits in a control data area along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of forming pits includes encoding control information along the wobbled pits in such a way that data bit "0" and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of forming pits includes forming the wobbled pit in at least one data unit preceded by the straight pits or followed by the straight pits.
12. The method according to claim 11, wherein the step of encoding control information encodes the wobbled pits by bi-phased modulation.
13. The method according to claim 11, wherein the control information includes protection information used for controlling reproduction and/or recording of main data.
14. The method according to claim 13, wherein the step of encoding control information repeatedly encode the same protection information in plural arrays of the wobbled pits.
15. The method according to claim 11, wherein the control data area comprises arrays of the wobbled pits and arrays of the strait pits periodically.
16. The method according to claim 11, wherein the step of forming pits forms arrays of the wobbled pits and arrays of the straight pits having different lengths respectively in the control data area.
17. The method according to claim 11, wherein the step of forming pits forms the wobbled pits in more than two data units different from a first data unit.
18. The method according to claim 17, wherein the step of forming pits includes comprising the plurality of data units into one address unit, and wherein the wobbled pits are formed in more than two data units different from the first data unit within the address unit.
19 19. The method according to claim 18, wherein the wobbled pits are formed in a plurality of address units.
20. A method of reproducing data from a recording medium, comprising:
detecting data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of detecting data includes detecting control information encoded along the wobbled pits in such a way that data bit "0" and "1"
comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of detecting control information includes detecting the wobbled pits from at least one data unit preceded by the straight pits or followed by the straight pits;
and utilizing the control information to reproduce main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
detecting data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are formed intermittently and alternately with the straight pits within the control data area, wherein the step of detecting data includes detecting control information encoded along the wobbled pits in such a way that data bit "0" and "1"
comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, and wherein the control data area includes a plurality of data units, and the step of detecting control information includes detecting the wobbled pits from at least one data unit preceded by the straight pits or followed by the straight pits;
and utilizing the control information to reproduce main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
21. The method according to claim 20, further comprising:
reproducing the main data using the control information, and outputting the reproduced main data.
reproducing the main data using the control information, and outputting the reproduced main data.
22. The method according to claim 20, wherein the step of detecting control information detects the control information recorded in pits from a difference signal between a right and a left electric signals, generated by a beam reflected from the pits formed along the tracks, and detecting data further detects the main data from a high-frequency electric signal generated by a beam reflected from the straight pits.
23. The method according to claim 20, wherein the control information includes protection information for controlling reproduction and/or recording of main data, and wherein the step of detecting control information detects the protection information.
24. The method according to claim 20, wherein the step of detecting control information detects the control information recorded in the wobbled pits by bi-phased modulation, in the control data area
25. The method according to claim 20, wherein the step of detecting pits detects arrays of the wobbled pits and arrays of the straight pits having different length respectively in the control data area.
26. The method according to claim 20, wherein the step of detecting control information includes detecting the wobbled pits formed in more than two data units different from a first data unit.
27. The method according to claim 26, wherein the plurality of data units comprise one address unit, and wherein the step of detecting control information includes detecting the wobbled pits formed in more than two data units different from the first data unit within the address unit.
28. The method according to claim 27, wherein the wobbled pits are formed in a plurality of address units, and wherein the step of detecting control information includes detecting the wobbled pits formed in the plurality of address units.
29. An apparatus for reproducing data from a recording medium, said apparatus comprising:
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are recorded intermittently and alternately with the straight pits, wherein control information is encoded along the wobbled pits in such a way that data bit "0"
and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits, and wherein the detection unit converts signals reflected from the pits into electric signals; and a signal processor, coupled to the detection unit, to process the electric signals to generate the control information and to process main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, pits in other portions of the tracks of the control data area are formed as straight pits, and the wobbled pits are recorded intermittently and alternately with the straight pits, wherein control information is encoded along the wobbled pits in such a way that data bit "0"
and "1" comprising the control information are represented by a transition within a predetermined period of the wobbled pits and each data bit is distinguished from each other by the transition direction within the predetermined period, wherein the control data area includes a plurality of data units, and the wobbled pits are formed in at least one data unit preceded by the straight pits or followed by the straight pits, and wherein the detection unit converts signals reflected from the pits into electric signals; and a signal processor, coupled to the detection unit, to process the electric signals to generate the control information and to process main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
30. The apparatus according to claim 29, wherein the signal processor is to generate the control information from low-frequency components and generate the main data from high-frequency components.
31. The apparatus according to claim 29, further comprising:
a controller, coupled to said detection unit and said signal processor, to control the detection of the control information and the processing of the main data, wherein the controller is configured to control said signal processor to output the main data based on the control information.
a controller, coupled to said detection unit and said signal processor, to control the detection of the control information and the processing of the main data, wherein the controller is configured to control said signal processor to output the main data based on the control information.
32. The apparatus according to claim 29, wherein the control information includes protection information used for controlling reproduction and/or recording of the main data, and wherein the controller is configured to control the reproduction of the main data in response to the protection information.
33. The apparatus according to claim 29, wherein the detection unit is configured to detect the wobbled pits formed in more than two data units different from a first data unit.
34. The apparatus according to claim 33, wherein the plurality of data units comprise one address unit, and wherein the detection unit is configured to detect the wobbled pits formed in more than two data units different from the first data unit within the address unit.
35. The apparatus according to claim 34, wherein the wobbled pits are formed in a plurality of address units, and wherein the detection unit is configured to detect the wobbled pits formed in the plurality of address units.
36. A recording medium including recorded data, comprising:
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area; and a main data area including main data recorded with modulation in straight pits formed along tracks, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of the main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period.
a control data area including pits formed along tracks, with data recorded therein, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area; and a main data area including main data recorded with modulation in straight pits formed along tracks, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of the main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period.
37. The recording medium according to claim 36, wherein the data in the control data area is recorded in the wobbled pits by bi-phased modulation.
38. The recording medium according to claim 37, wherein the control information comprises arrays of the wobbled pits and arrays of the straight pits periodically.
39. The recording medium according to claim 38, wherein arrays of the wobbled pits and arrays of the straight pits in the control data area are of different length.
40. The recording medium according to claim 36, wherein the wobble pits are formed in more than two frames within one address unit.
41. The recording medium according to claim 36, wherein the wobbled pits are formed in a first frame or at least one frame other than the first frame within one address unit.
42. A method of reproducing data from a recording medium, comprising:
detecting data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period; and generating the control information in the unit of frame to reproduce the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
detecting data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are substantially formed as straight pits, wherein the wobbled pits are formed intermittently or alternately with the straight pits within the control data area, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame and the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by a transition in a opposite direction within the period; and generating the control information in the unit of frame to reproduce the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium.
43. The method according to claim 42, further comprising:
reproducing the main data using the generated control information.
reproducing the main data using the generated control information.
44. The method according to claim 42, wherein said detecting step detects the data recorded in pits from a difference signal between a right and a left electric signals, generated by a beam reflected from the pits formed along the tracks, and wherein said detecting step further detects the main data from a high-frequency electric signal generated by a beam reflected from the straight pits.
45. The method according to claim 42, wherein the detecting step detects the data that comprises arrays of the wobbled pits and arrays of the straight pits having different length respectively in the control data area.
46. The method according to claim 42, wherein the wobble pits are formed in more than two frames within one address unit, and wherein the generating step generates the control information formed as the wobbled pits in more than two frames within one address unit.
47. The method according to claim 42, wherein the wobbled pits are formed in a first frame or at least one frame other than the first frame within one address unit, and wherein the generating step generates the control information formed as the wobbled pits in the first frame or said at least one frame other than the first frame within one address unit.
48. An apparatus for reproducing data from a recording medium, said apparatus comprising:
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are formed as straight pits, wherein the wobbled pits are recorded intermittent or alternate with the straight pits, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame, the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by,a transition in a opposite direction within the period, wherein the detection unit configured to convert signals reflected from the pits into electric signals and generating data from the electrical signals;
and a data processor configured to process the control information in the unit of frame from the data and to process the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium by using the control information.
a detection unit configured to detect data recorded in pits formed along tracks in a control data area, wherein pits in some portions of the tracks are formed as wobbled pits, and pits in other portions of the tracks of the control data area are formed as straight pits, wherein the wobbled pits are recorded intermittent or alternate with the straight pits, wherein the control data area includes one or more address units, the address unit comprises a plurality of frames, the wobble pits and straight pits being formed in unit of frame, the address unit including at least one frame with the wobbled pits and at least one frame without the wobbled pits, wherein the data in the control data area includes control information used for controlling reproduction and/or recording of main data, the control information being encoded along with plural arrays of the wobbled pits, and wherein the control information is recorded by bi-phase modulation method in such a manner that bit 0 and bit 1 are determined respectively depending on a direction of a transition within a predetermined period, one of the bit 0 and the bit 1 is represented by a transition from low at a start to high in a middle and another one is represented by,a transition in a opposite direction within the period, wherein the detection unit configured to convert signals reflected from the pits into electric signals and generating data from the electrical signals;
and a data processor configured to process the control information in the unit of frame from the data and to process the main data recorded with modulation in straight pits formed along tracks of a main data area of the recording medium by using the control information.
49. The apparatus according to claim 48, further comprising:
a controller, coupled to said detection unit and said data processor, to control the detection of the control information and the processing of the main data, the controller being configured to control said data processor to output the main data based on the control information.
a controller, coupled to said detection unit and said data processor, to control the detection of the control information and the processing of the main data, the controller being configured to control said data processor to output the main data based on the control information.
50. The apparatus according to claim 48, wherein the detection unit is configured to detect the wobble pits formed in more than two frames within one address unit, and wherein the data processor is configured to generate the control information formed as the wobbled pits in more than two frames within one address unit.
51. The apparatus according to claim 48, wherein the detection unit is configured to detect the wobbled pits formed in a first frame or at least one frame other than the first frame within one address unit, and wherein the data processor is configured to generate the control information formed as the wobbled pits in the first frame or said at least one frame other than the first frame within one address unit.
52. A recording medium, comprising:
first area for storing control information required basically for recording or reproducing user data; and second area for storing copy protection information for use in generating or processing copy protected user data, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern in the second area.
first area for storing control information required basically for recording or reproducing user data; and second area for storing copy protection information for use in generating or processing copy protected user data, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern in the second area.
53. The recording medium according to claim 52, wherein the copy protection information is key information for use in encrypting/decrypting the user data.
54. The recording medium according to claim 52, wherein the first area further includes indicating information for indicating whether the recording medium contains the copy protection information, the indication information being formed as a wobbled pattern.
55. The recording medium according to claim 54, wherein the indicating information and/or the copy protection information are recorded by phase modulated method.
56. The recording medium according to claim 52, wherein the at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is within a lead-in area of the recording medium.
57. The recording medium according to claim 52, wherein the copy protection information is stored alternatively in another area different from the second area.
58. The recording medium according to claim 52, further comprising:
third area provided between the first area and the second area, the third area being used for transition between the first area and the second area.
third area provided between the first area and the second area, the third area being used for transition between the first area and the second area.
59. A method of recording data on a recording medium, comprising:
recording control information required basically for recording or reproducing user data in a first area; and recording copy protection information for use in generating or processing copy protected user data in another area different from a second area, the step of recording copy protection information comprising copying the copy protection information from the second area to said another area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in first specific data unit is different from data structure of the copy protection information in second specific data unit in the second area with respect to a modulation method.
recording control information required basically for recording or reproducing user data in a first area; and recording copy protection information for use in generating or processing copy protected user data in another area different from a second area, the step of recording copy protection information comprising copying the copy protection information from the second area to said another area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in first specific data unit is different from data structure of the copy protection information in second specific data unit in the second area with respect to a modulation method.
60. The method according to claim 59, wherein the copy protection information is recorded by phase modulated method.
61. The method according to claim 59, wherein the step of recording the copy protection information comprises recording the copy protection information in another area within a lead-in area of the recording medium.
62. A method of reproducing data from a recording medium, comprising:
reading control information required basically for reproducing user data from a first area; and detecting copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern.
reading control information required basically for reproducing user data from a first area; and detecting copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, and at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern.
63. The method according to claim 62, wherein the step of detecting includes detecting the copy protection information from a lead-in area of the recording medium.
64. The method according to claim 62, wherein further comprising:
processing the user data based on the control information and the copy protection information.
processing the user data based on the control information and the copy protection information.
65. An apparatus for reproducing data from a recording medium, comprising:
a detection unit configured to detect control information required basically for reproducing user data from a first area and copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern and the control. information in the first area and the copy protection information in the second area are recorded separately;
and a controller configured to control the detection unit to detect the control information from the first area and the copy protection information from the second area.
a detection unit configured to detect control information required basically for reproducing user data from a first area and copy protection information for use in processing copy protected user data from a second area, the copy protected user data being encrypted user data and the copy protection information being required to encrypt/decrypt the user data, wherein a plurality of copy protection information are presented in specific data units in the recording medium, data structure of the copy protection information in a first specific data unit is different from data structure of the copy protection information in a second specific data unit with respect to a modulation method, at least one of the copy protection information in the first specific data unit and the copy protection information in the second specific data unit is formed as a wobbled pattern and the control. information in the first area and the copy protection information in the second area are recorded separately;
and a controller configured to control the detection unit to detect the control information from the first area and the copy protection information from the second area.
66. The apparatus according to claim 65, wherein the detection unit is configured to detect the copy protection information from a lead-in area of the recording medium according to the control of the controller.
67. The apparatus according to claim 65, wherein the detection unit is configured to detect the copy protection information by a push-pull method.
68. The apparatus according to claim 65, further comprising:
a data processor configured to process the user data based on the control information and the copy protection information.
a data processor configured to process the user data based on the control information and the copy protection information.
69. A method of recording data on a recording medium, comprising:
recording copy protected user data encrypted by copy protection information;
recording control information required for reproducing the copy protected user data in a first area; and recording the copy protection information for decrypting the copy protected user data in a second area, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in the first specific data unit is different from data structure of the copy protection information in the second specific data unit in the second area with respect to a modulation method.
recording copy protected user data encrypted by copy protection information;
recording control information required for reproducing the copy protected user data in a first area; and recording the copy protection information for decrypting the copy protected user data in a second area, wherein the control information in the first area and the copy protection information in the second area are recorded separately, a plurality of copy protection information are presented in specific data units in the recording medium, at least one of the copy protection information in a first specific data unit and the copy protection information in a second specific data unit is formed as a wobbled pattern, and data structure of the copy protection information in the first specific data unit is different from data structure of the copy protection information in the second specific data unit in the second area with respect to a modulation method.
70. The method according to claim 69, wherein the copy protection information is recorded by phase modulated method.
71. The method according to claim 69, wherein the copy protection information is stored in another area different from the second area.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030004487A KR100716420B1 (en) | 2003-01-23 | 2003-01-23 | Method for managing a disc information of high density optical disc |
KR10-2003-0004487 | 2003-01-23 | ||
KR10-2003-0005211 | 2003-01-27 | ||
KR1020030005211A KR100932508B1 (en) | 2003-01-27 | 2003-01-27 | Main information management method of high density disk |
KR1020030016139A KR100932512B1 (en) | 2003-03-14 | 2003-03-14 | Copy protection information management method for high density optical disc |
KR10-2003-0016139 | 2003-03-14 | ||
PCT/KR2004/000111 WO2004066286A1 (en) | 2003-01-23 | 2004-01-20 | Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2487406A1 CA2487406A1 (en) | 2004-08-05 |
CA2487406C true CA2487406C (en) | 2012-02-21 |
Family
ID=36696614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2487406A Expired - Fee Related CA2487406C (en) | 2003-01-23 | 2004-01-20 | Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium |
Country Status (12)
Country | Link |
---|---|
US (4) | US7908488B2 (en) |
EP (5) | EP1653456B1 (en) |
JP (4) | JP4690306B2 (en) |
AT (3) | ATE490534T1 (en) |
AU (1) | AU2004206483B2 (en) |
BR (1) | BRPI0405623A (en) |
CA (1) | CA2487406C (en) |
DE (1) | DE602004030317D1 (en) |
MX (1) | MXPA04012390A (en) |
MY (1) | MY145259A (en) |
TW (4) | TWI343049B (en) |
WO (2) | WO2004066285A1 (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2362217C2 (en) | 2002-08-22 | 2009-07-20 | Эл Джи Электроникс Инк. | Optical disc with high recording density and method of recording/reading for said optical disc |
EP1653456B1 (en) | 2003-01-23 | 2012-04-11 | LG Electronics, Inc. | Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium |
AU2006200901B2 (en) * | 2003-01-24 | 2009-01-08 | Lg Electronics Inc. | Method of managing copy protection information of a recording medium, recording medium with copy protection information for contents recorded thereon, and reproducing method for the recording medium |
KR100952949B1 (en) * | 2003-01-24 | 2010-04-15 | 엘지전자 주식회사 | Method for managing a copy protection information of high density optical disc |
KR100932506B1 (en) | 2003-02-27 | 2009-12-17 | 엘지전자 주식회사 | Regeneration control information management and data reproduction control method of high density optical disc |
KR100499586B1 (en) * | 2003-05-20 | 2005-07-07 | 엘지전자 주식회사 | Method for managing a copy protection information of high density optical disc and high density optical disc therof and apparatus for detecting a copy protection information |
US20050185548A1 (en) * | 2004-02-19 | 2005-08-25 | Weirauch Charles R. | Information access control for optical media |
GB0413610D0 (en) * | 2004-06-18 | 2004-07-21 | Melexis Nv | DVD reading apparatus |
DE602005012114D1 (en) * | 2004-08-10 | 2009-02-12 | Koninkl Philips Electronics Nv | DRIVE AND METHOD FOR DETERMINING OPTICAL DATA CARRIER TYPES |
JP4836954B2 (en) | 2004-09-13 | 2011-12-14 | エルジー エレクトロニクス インコーポレイティド | Recording medium and method and apparatus for recording data on recording medium |
US7746746B2 (en) * | 2004-11-16 | 2010-06-29 | Hewlett-Packard Development Company, L.P. | Optical media with control data in wobble |
JP2006236421A (en) * | 2005-02-22 | 2006-09-07 | Toshiba Corp | Storage medium, reproducing method and recording method |
DE602006008607D1 (en) * | 2005-05-09 | 2009-10-01 | Koninkl Philips Electronics Nv | OPTICAL DATA STORAGE MEDIUM AND DEVICE AND METHOD FOR TASKING SUCH A MEDIUM |
EP1958194A2 (en) * | 2005-11-29 | 2008-08-20 | Koninklijke Philips Electronics N.V. | Record carrier with copy protection means |
KR20080111128A (en) * | 2006-04-11 | 2008-12-22 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Optical discs with identification code |
JP2007323775A (en) * | 2006-06-02 | 2007-12-13 | Toshiba Corp | Optical recording medium, information recording method, and information reproducing method |
US20100142361A1 (en) * | 2007-03-30 | 2010-06-10 | Pioneer Corporation | Optical disc |
JP5034921B2 (en) * | 2007-12-14 | 2012-09-26 | ソニー株式会社 | Information processing apparatus, disk, information processing method, and program |
US8050157B1 (en) | 2007-12-20 | 2011-11-01 | Marvell International Ltd. | Timing recovery for optical disc drive high frequency modulation |
US8000193B1 (en) | 2007-12-20 | 2011-08-16 | Marvell International Ltd. | Timing recovery for optical disc drive high frequency modulation |
US8234971B2 (en) * | 2008-11-13 | 2012-08-07 | Cerroni Peter M | Portable, non-electric piston/cylinder coffee brewer |
KR101860572B1 (en) * | 2009-05-05 | 2018-05-24 | 암젠 인크 | Fgf21 mutants and uses thereof |
US8958276B1 (en) | 2012-10-31 | 2015-02-17 | Marvell International Ltd. | Optical disc drive high frequency modulation signal detection |
Family Cites Families (130)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4652944A (en) | 1984-06-25 | 1987-03-24 | Kirsch Technologies, Inc. | Computer memory back-up |
US4879707A (en) | 1985-07-30 | 1989-11-07 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems specific track formats using discontinuities |
NL8701632A (en) * | 1987-07-10 | 1989-02-01 | Philips Nv | SYSTEM FOR RECORDING AND / OR READING AN INFORMATION SIGNAL, A RECORD CARRIER, A RECORDING AND / OR READING DEVICE FOR USE IN SUCH A SYSTEM, AND AN APPARATUS AND METHOD FOR MANUFACTURING SUCH RECORD CARRIER. |
JPH07108631B2 (en) | 1988-01-20 | 1995-11-22 | 日産自動車株式会社 | Vehicle drive force control device |
JPH0536194A (en) | 1991-07-30 | 1993-02-12 | Sony Corp | Optical disk reproducing device |
DE69230168T2 (en) | 1991-12-02 | 2000-04-20 | Koninkl Philips Electronics Nv | Closed information system with copy protection |
EP0930614B1 (en) * | 1991-12-02 | 2004-03-31 | Philips Electronics N.V. | Closed information system with physical copy protection |
US5818805A (en) * | 1992-02-14 | 1998-10-06 | Sony Corporation | Reproducing apparatus using an information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge |
US5295127A (en) * | 1992-12-22 | 1994-03-15 | North American Philips Corporation | Optical data recorder with segment synchronization marks |
JP3240762B2 (en) * | 1993-07-26 | 2001-12-25 | ソニー株式会社 | Optical recording medium reproducing method and reproducing apparatus |
US5596639A (en) | 1993-07-26 | 1997-01-21 | Elonex Ip Holdings Ltd. | Cd-prom |
TW241360B (en) * | 1993-07-29 | 1995-02-21 | Nippon Pickter Kk | |
US5878007A (en) | 1993-12-27 | 1999-03-02 | Matsushita Electric Industrial Co., Ltd. | Anti-wobble optical medium and tracking method and apparatus |
JP3061098B2 (en) | 1994-02-10 | 2000-07-10 | 日本ビクター株式会社 | Optical disk, optical disk reproducing apparatus, and optical disk recording method |
US5799501A (en) | 1994-07-08 | 1998-09-01 | Leonard; Richard T. | Beverage cooling device |
TW309612B (en) * | 1994-09-22 | 1997-07-01 | Nippon Bickter Kk | |
JPH08124171A (en) | 1994-10-27 | 1996-05-17 | Victor Co Of Japan Ltd | Optical disk and its recorder |
JPH08147704A (en) * | 1994-11-18 | 1996-06-07 | Sony Corp | Disk-shaped recording medium, and disk reproduction method and device |
US5629912A (en) | 1995-01-30 | 1997-05-13 | Sony Corporation | Focusing servo controlling apparatus |
US5982738A (en) | 1995-02-14 | 1999-11-09 | Hitachi, Ltd. | Optical recording medium having at least wobbled synchronous information shared between tracks |
WO1996030907A1 (en) * | 1995-03-30 | 1996-10-03 | Yoshikatsu Niwa | Device and method for driving discoid recording medium and discoid recording medium |
JPH0917119A (en) | 1995-06-30 | 1997-01-17 | Sony Corp | Data recording medium, data recording method and data reproducing method |
US6516064B1 (en) | 1995-07-25 | 2003-02-04 | Sony Corporation | Signal recording apparatus, signal record medium and signal reproducing apparatus |
JPH09128874A (en) | 1995-09-01 | 1997-05-16 | Sony Corp | Data recording device and method therefor, protection device against illegal copy, and data |
US5703859A (en) | 1995-09-01 | 1997-12-30 | Sony Corporation | Digital video copy protection system |
JPH0981938A (en) * | 1995-09-14 | 1997-03-28 | Matsushita Electric Ind Co Ltd | Optical disk with illegal copy preventing function and optical disk device |
DE69621053T2 (en) * | 1995-10-09 | 2002-10-31 | Matsushita Electric Ind Co Ltd | Optical disc for use in an encryption or program license system |
WO1997014147A1 (en) * | 1995-10-09 | 1997-04-17 | Matsushita Electric Industrial Co., Ltd. | Information recording medium, information reproduction apparatus and information reproduction method |
SG83122A1 (en) | 1995-10-09 | 2001-09-18 | Matsushita Electric Ind Co Ltd | An optical disk, an optical disk barcode forming method, and optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk |
JP4130965B2 (en) | 1995-10-30 | 2008-08-13 | パイオニア株式会社 | Optical disk playback device |
JP3850060B2 (en) | 1996-02-13 | 2006-11-29 | 三菱電機株式会社 | Optical disc and optical disc apparatus |
JP3703569B2 (en) | 1996-04-02 | 2005-10-05 | ソニー株式会社 | Optical recording medium, recording / reproducing method thereof, and recording / reproducing apparatus |
US5809006A (en) * | 1996-05-31 | 1998-09-15 | Cagent Technologies, Inc. | Optical disk with copy protection, and apparatus and method for recording and reproducing same |
JPH103746A (en) | 1996-06-12 | 1998-01-06 | Mitsubishi Electric Corp | Copywrite protection system |
DE69736919T2 (en) * | 1996-06-27 | 2007-09-13 | Koninklijke Philips Electronics N.V. | INFORMATION CARRIER WITH ADDITIONAL INFORMATION, PLAYBACK DEVICE AND METHOD FOR PRODUCING SUCH INFORMATION CARRIER |
US5892797A (en) | 1996-07-17 | 1999-04-06 | Jay Deng | System and method for recovering data encoded using manchester code and other bi-phase level codes |
CN1145936C (en) | 1996-10-22 | 2004-04-14 | 株式会社日立制作所 | Information recording medium for showing magnetic track oscillation information and information recording reproducer |
JP3753267B2 (en) | 1996-10-25 | 2006-03-08 | ソニー株式会社 | Disc recording / reproducing apparatus and method |
JPH10145773A (en) * | 1996-11-14 | 1998-05-29 | Toshiba Corp | Method for ciphering animation data, computer system applying the method and dynamic image data encoding/ decoding device |
JP3545893B2 (en) | 1996-12-05 | 2004-07-21 | 株式会社リコー | Optical information recording medium and master disc exposure method |
JP3852498B2 (en) | 1997-03-21 | 2006-11-29 | ソニー株式会社 | Information recording apparatus, information reproducing apparatus, and information recording medium |
JP3648914B2 (en) | 1997-04-11 | 2005-05-18 | ソニー株式会社 | Laser light power control method and optical disk recording apparatus |
JP2954083B2 (en) | 1997-05-01 | 1999-09-27 | 株式会社東芝 | Information recording / reproducing medium, information recording / reproducing medium format device, and information recording / reproducing device |
WO1998054713A1 (en) | 1997-05-30 | 1998-12-03 | Ç-Dilla Limited | Method for copy protecting a record carrier, copy protected record carrier and means for detecting access control information |
JPH1166739A (en) | 1997-08-19 | 1999-03-09 | Seiji Yonezawa | Optical recording carrier, and recording device and reproducing device of optical recording carrier |
JP3488603B2 (en) | 1997-09-16 | 2004-01-19 | 株式会社東芝 | Copy protection system using digital watermark |
US6223285B1 (en) * | 1997-10-24 | 2001-04-24 | Sony Corporation Of Japan | Method and system for transferring information using an encryption mode indicator |
JPH11196084A (en) * | 1997-10-31 | 1999-07-21 | Matsushita Electric Ind Co Ltd | Ciphering system |
JPH11149704A (en) | 1997-11-19 | 1999-06-02 | Sony Corp | Phase-locked loop circuit, reproducer and leading-in control method of phase-locked loop circuit |
TW408290B (en) | 1997-12-29 | 2000-10-11 | Samsung Electronics Co Ltd | Method and apparatus for protecting copyright of digital recording medium and copyright protected digital recording medium |
US6587948B1 (en) * | 1998-02-13 | 2003-07-01 | Sony Corporation | Recording apparatus, recording medium, playback apparatus, recording method and playback method |
EA003068B1 (en) * | 1998-02-27 | 2002-12-26 | Оптуэр Корпорейшн | Method and apparatus foe recording and reproducing optical information (variants) |
JPH11261950A (en) | 1998-03-11 | 1999-09-24 | Toshiba Corp | Video information processing system and video information processing method |
JP3817364B2 (en) | 1998-05-07 | 2006-09-06 | パイオニア株式会社 | Image recording signal generating apparatus, information recording apparatus, and recording medium |
KR100601598B1 (en) | 1998-06-15 | 2006-07-14 | 삼성전자주식회사 | Recording medium storing write protection information and write protecting method |
DE69925087T2 (en) | 1998-09-22 | 2006-02-02 | Matsushita Electric Industrial Co., Ltd., Kadoma | An optical disc, a method of reproducing additional data from an optical disc, an optical disc reproducing apparatus and an optical disc recording and reproducing apparatus |
CN1192379C (en) | 1998-10-05 | 2005-03-09 | 皇家菲利浦电子有限公司 | System for copy protection of recorded information |
JP4051515B2 (en) | 1998-12-28 | 2008-02-27 | ソニー株式会社 | Disc recording apparatus, disc recording method, optical disc reproducing device, optical disc reproducing method, optical disc, and signal processing circuit |
US6665240B1 (en) | 1998-10-07 | 2003-12-16 | Sony Corporation | Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk |
JP2000149415A (en) | 1998-11-02 | 2000-05-30 | Matsushita Electric Ind Co Ltd | Optical disk, reproducing device and duplicating device thereof, and method for preventing illegal use thereof |
JP4135244B2 (en) | 1998-12-28 | 2008-08-20 | ソニー株式会社 | Optical pickup device, adjustment method thereof, and optical disc recording and / or reproducing device |
WO2000043996A1 (en) | 1999-01-25 | 2000-07-27 | Koninklijke Philips Electronics N.V. | Record carrier and apparatus for scanning the record carrier |
DE60020612T2 (en) | 1999-01-27 | 2006-03-16 | Koninklijke Philips Electronics N.V. | Record carrier, reproducing apparatus and method for recording information |
JP2000231722A (en) | 1999-02-10 | 2000-08-22 | Hitachi Ltd | Optical disk, information recording method, and reproducing device therefor |
US6662805B2 (en) * | 1999-03-24 | 2003-12-16 | The Johns Hopkins University | Method for composite cell-based implants |
JP3630287B2 (en) | 1999-04-15 | 2005-03-16 | 日本ビクター株式会社 | Digital data recording method |
EP1450362A3 (en) | 1999-04-28 | 2007-01-10 | Matsushita Electric Industrial Co., Ltd. | Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system |
WO2000079532A1 (en) | 1999-06-23 | 2000-12-28 | Mitsubishi Chemical Corporation | Recording medium, method for initializing recording medium, encrypting method and device for recording medium, decrypting method, and acoustic/video/data device |
US6519213B1 (en) * | 1999-06-29 | 2003-02-11 | Oak Technology, Inc. | Method and apparatus for reading data from a disk |
EP1145241A2 (en) * | 1999-07-02 | 2001-10-17 | Koninklijke Philips Electronics N.V. | Addition of watermark keys according to a flexible format |
JP3916804B2 (en) | 1999-07-06 | 2007-05-23 | パイオニア株式会社 | Content recording medium and reproducing apparatus thereof |
US6678236B1 (en) | 1999-08-24 | 2004-01-13 | Victor Company Of Japan, Ltd. | Information recording medium method and apparatus for recording and reproducing information |
US7072260B1 (en) | 1999-08-25 | 2006-07-04 | Sony Corporation | Data recording medium, data reproducing method and reproducing device, and data processing system |
JP4221883B2 (en) | 1999-08-25 | 2009-02-12 | ソニー株式会社 | Data recording medium, data reproducing method and reproducing apparatus, and data recording method and recording apparatus. |
JP2001084596A (en) * | 1999-09-10 | 2001-03-30 | Matsushita Electric Ind Co Ltd | Optical disk and optical disk device |
EP2104100A3 (en) | 1999-09-30 | 2012-02-22 | Panasonic Corporation | Information recording medium for recording a scrambled part of content information, and method and apparatus for reproducing information recorded therein |
JP2001109665A (en) | 1999-10-06 | 2001-04-20 | Ricoh Co Ltd | Recording medium and recording medium recording record read program for data |
WO2001037278A1 (en) | 1999-11-16 | 2001-05-25 | Sony Corporation | Recording medium, data recording method and apparatus, data reproducing method and apparatus, and copying control method |
US6708299B1 (en) | 1999-11-22 | 2004-03-16 | Thomson Licensing S.A. | BCA data replay |
DE60044920D1 (en) | 1999-11-25 | 2010-10-14 | Victor Company Of Japan | Medium for recording optical information, and substrate and method for manufacturing the optical information recording medium |
JP2001167517A (en) | 1999-12-08 | 2001-06-22 | Sanyo Electric Co Ltd | Optical disk reproducing device |
JP2001189051A (en) | 1999-12-28 | 2001-07-10 | Pioneer Electronic Corp | Code deciding device and method, recording medium discriminating device and method and information recording device and method |
DE60012376T2 (en) | 2000-01-14 | 2005-08-04 | Matsushita Electric Industrial Co., Ltd., Kadoma | Optical data carrier and address reading device and method for optical data carriers |
JP2001243355A (en) | 2000-02-25 | 2001-09-07 | Sony Corp | Device and method for charging processing and device and method for reproducing data |
JP2001256650A (en) | 2000-03-09 | 2001-09-21 | Sony Corp | Optical disk device and optical disk |
JP4288548B2 (en) | 2000-03-09 | 2009-07-01 | ソニー株式会社 | Optical disc apparatus and optical disc |
JP2001320363A (en) * | 2000-05-10 | 2001-11-16 | Pioneer Electronic Corp | Copyright protecting method, recording method, recording device, reproducing method and reproducing device |
US7200085B2 (en) | 2000-05-19 | 2007-04-03 | Matsushita Electric Industrial Co., Ltd. | Recordable data storage medium including property data |
JP2001344765A (en) | 2000-05-31 | 2001-12-14 | Toshiba Corp | Information recording medium and device and method for recording and reproducing information |
US20040076110A1 (en) | 2000-06-22 | 2004-04-22 | Yasumori Hino | Optical disk medium, optical disk device, and master production method |
JP2002042346A (en) * | 2000-07-19 | 2002-02-08 | Sony Corp | Recording medium and device/method for reproducing recording medium |
JP3922424B2 (en) | 2000-07-25 | 2007-05-30 | パイオニア株式会社 | Optical recording medium, optical recording medium manufacturing apparatus, and optical recording medium manufacturing method |
EP1312086A2 (en) | 2000-08-14 | 2003-05-21 | Koninklijke Philips Electronics N.V. | Method for generating a binary signal having a predetermined spectral shape |
JP2002074664A (en) | 2000-08-31 | 2002-03-15 | Sony Corp | Recorder and recording method, reproducing device and method, and recording medium |
KR100798201B1 (en) * | 2000-09-01 | 2008-01-24 | 마츠시타 덴끼 산교 가부시키가이샤 | Optical disc medium, optical disc playback method and recording method |
JP2002074855A (en) * | 2000-09-04 | 2002-03-15 | Sony Corp | Disk shaped recording medium and disk driving device |
JP4226204B2 (en) | 2000-09-14 | 2009-02-18 | パイオニア株式会社 | Optical recording medium, manufacturing apparatus and manufacturing method thereof |
EP1325497A2 (en) | 2000-09-22 | 2003-07-09 | Matsushita Electric Industrial Co., Ltd. | Optical disc and a reproduction method, reproduction apparatus, and recording apparatus for the same |
EP1333431B1 (en) | 2000-10-10 | 2013-07-03 | Panasonic Corporation | Optical disc |
CN1277255C (en) | 2000-10-26 | 2006-09-27 | 日本先锋公司 | Optical recording media, manufacturing apparatus and method thereof |
JP4113351B2 (en) | 2000-10-27 | 2008-07-09 | 松下電器産業株式会社 | Optical disc, recording apparatus, reproducing apparatus, recording method and reproducing method |
DE10194725B3 (en) | 2000-10-31 | 2017-05-18 | Sony Corporation | Data recording and playback device with copy protection function |
JP2002150675A (en) | 2000-11-06 | 2002-05-24 | Sony Corp | Method and device for recording, method and device for reproducing, and storage medium |
US6664526B2 (en) * | 2000-11-15 | 2003-12-16 | Ricoh Company, Ltd. | Optical information recording employing improved recording power control scheme |
US20050053258A1 (en) * | 2000-11-15 | 2005-03-10 | Joe Pasqua | System and method for watermarking a document |
JP2002163857A (en) | 2000-11-22 | 2002-06-07 | Sharp Corp | Method of recording/reproducing information, information recording medium, information recording/ reproducing apparatus, and method for manufacturing information recording medium |
JP2002190159A (en) * | 2000-12-20 | 2002-07-05 | Toshiba Corp | Information storage medium and information storage playback apparatus |
JP2002197674A (en) | 2000-12-27 | 2002-07-12 | Toshiba Corp | Optical disk and optical disk ruggedness device |
JP2002216360A (en) | 2001-01-19 | 2002-08-02 | Hitachi Ltd | Recording medium, information recording and regenerating method, and recording and regenerating device |
US7057993B2 (en) | 2001-01-29 | 2006-06-06 | Eastman Kodak Company | Copy protection using multiple security levels on a programmable CD-ROM |
US20020141583A1 (en) | 2001-01-29 | 2002-10-03 | Eastman Kodak Company | Copy protection using a preformed ID and a unique ID on a programmable CD-ROM |
JP2002352475A (en) | 2001-03-22 | 2002-12-06 | Victor Co Of Japan Ltd | Information recording medium |
JP2001332031A (en) | 2001-04-02 | 2001-11-30 | Victor Co Of Japan Ltd | Method of recording and writing copyright management information of disk, disk, method of recording and reproducing for disk, and reproducing device for disk |
JP4635367B2 (en) | 2001-04-16 | 2011-02-23 | ソニー株式会社 | Recording method, recording apparatus, reproducing method, and reproducing apparatus |
JP2002319245A (en) | 2001-04-20 | 2002-10-31 | Sony Corp | Data recording medium, method and device for data reproduction, and method and device for data output |
KR100408285B1 (en) | 2001-05-24 | 2003-12-03 | 삼성전자주식회사 | Optical recording medium on which multi-modulated header signals are recorded, method and apparatus for recording the header signals, method and apparatus for reproducing the header signals |
JP2002367281A (en) | 2001-06-12 | 2002-12-20 | Toshiba Corp | Information management method, information memory medium, information reproducing device and charge method for utilized information |
JP2003006997A (en) | 2001-06-21 | 2003-01-10 | Sony Corp | Optical disk, method for manufacturing optical disk, method for disk drive, and disk drive |
CA2420221A1 (en) * | 2001-06-29 | 2003-02-20 | Shinichi Kazami | Data recording medium, recording medium recording and/reproducing apparatus, and recording or reproducing method |
KR100754160B1 (en) | 2001-06-30 | 2007-09-03 | 삼성전자주식회사 | Optical disc drive and method for reproducing wobble signal |
JPWO2003038821A1 (en) | 2001-10-31 | 2005-02-24 | ソニー株式会社 | Recording medium, recording medium recording method and apparatus, and recording medium reproduction method and apparatus |
JP2003217131A (en) | 2002-01-23 | 2003-07-31 | Sony Corp | Disk optical recording medium and its reproduction limiting method |
US7801006B2 (en) * | 2002-05-01 | 2010-09-21 | Lg Electronics, Inc. | High-density read-only optical disc, and optical disc apparatus and method using the same |
RU2362217C2 (en) | 2002-08-22 | 2009-07-20 | Эл Джи Электроникс Инк. | Optical disc with high recording density and method of recording/reading for said optical disc |
KR100727920B1 (en) | 2002-09-06 | 2007-06-14 | 삼성전자주식회사 | Optical information storage medium and method of recording and/or reproducing the same |
KR20040048476A (en) | 2002-12-03 | 2004-06-10 | 삼성전자주식회사 | Optical information reproducing apparatus and method |
JP4273767B2 (en) | 2003-01-06 | 2009-06-03 | ソニー株式会社 | Mastering device, disc manufacturing method, disc-shaped recording medium, disc playback device, and disc playback method |
EP1653456B1 (en) | 2003-01-23 | 2012-04-11 | LG Electronics, Inc. | Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium |
KR100974449B1 (en) * | 2003-04-24 | 2010-08-10 | 엘지전자 주식회사 | Method for managing a copy protection information of optical disc |
KR100499586B1 (en) * | 2003-05-20 | 2005-07-07 | 엘지전자 주식회사 | Method for managing a copy protection information of high density optical disc and high density optical disc therof and apparatus for detecting a copy protection information |
-
2004
- 2004-01-20 EP EP06001616A patent/EP1653456B1/en not_active Expired - Lifetime
- 2004-01-20 AT AT04703529T patent/ATE490534T1/en not_active IP Right Cessation
- 2004-01-20 AT AT06001616T patent/ATE553478T1/en active
- 2004-01-20 EP EP04703529A patent/EP1586088B1/en not_active Expired - Lifetime
- 2004-01-20 EP EP08010071A patent/EP1962287A1/en not_active Withdrawn
- 2004-01-20 TW TW093101547A patent/TWI343049B/en not_active IP Right Cessation
- 2004-01-20 WO PCT/KR2004/000109 patent/WO2004066285A1/en active Application Filing
- 2004-01-20 EP EP07018289A patent/EP1870886A1/en not_active Ceased
- 2004-01-20 JP JP2006500637A patent/JP4690306B2/en not_active Expired - Fee Related
- 2004-01-20 JP JP2006500638A patent/JP4297940B2/en not_active Expired - Fee Related
- 2004-01-20 DE DE602004030317T patent/DE602004030317D1/en not_active Expired - Lifetime
- 2004-01-20 CA CA2487406A patent/CA2487406C/en not_active Expired - Fee Related
- 2004-01-20 TW TW096134099A patent/TWI366190B/en not_active IP Right Cessation
- 2004-01-20 AU AU2004206483A patent/AU2004206483B2/en not_active Ceased
- 2004-01-20 TW TW093101549A patent/TWI304973B/en not_active IP Right Cessation
- 2004-01-20 BR BR0405623-0A patent/BRPI0405623A/en not_active IP Right Cessation
- 2004-01-20 EP EP04703541A patent/EP1586090B1/en not_active Expired - Lifetime
- 2004-01-20 WO PCT/KR2004/000111 patent/WO2004066286A1/en active Application Filing
- 2004-01-20 MX MXPA04012390A patent/MXPA04012390A/en active IP Right Grant
- 2004-01-20 TW TW095113498A patent/TWI304978B/en not_active IP Right Cessation
- 2004-01-20 AT AT04703541T patent/ATE550757T1/en active
- 2004-01-21 MY MYPI20072302A patent/MY145259A/en unknown
- 2004-01-23 US US10/762,516 patent/US7908488B2/en not_active Expired - Fee Related
- 2004-01-23 US US10/762,538 patent/US7609604B2/en not_active Expired - Fee Related
-
2006
- 2006-03-06 US US11/367,305 patent/US8707055B2/en active Active
- 2006-03-20 JP JP2006076406A patent/JP4921007B2/en not_active Expired - Fee Related
-
2007
- 2007-09-07 US US11/898,040 patent/US7599274B2/en not_active Expired - Fee Related
- 2007-09-20 JP JP2007243684A patent/JP2008027576A/en active Pending
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7599274B2 (en) | Recording medium with intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium | |
US7733756B2 (en) | Recording medium with optional information and apparatus and methods for forming, recording, reproducing and controlling reproduction of the recording medium | |
AU2006200903B2 (en) | Recording medium with copy protection information formed in intermittent or alternate wobbled pits and apparatus and methods for forming, recording, and reproducing the recording medium | |
CN1698103B (en) | Recording medium with an intermittent or alternate wobbled pits and apparatus and methods for using same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20190121 |