CA2558895C - Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium - Google Patents
Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium Download PDFInfo
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- CA2558895C CA2558895C CA2558895A CA2558895A CA2558895C CA 2558895 C CA2558895 C CA 2558895C CA 2558895 A CA2558895 A CA 2558895A CA 2558895 A CA2558895 A CA 2558895A CA 2558895 C CA2558895 C CA 2558895C
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- control data
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- access control
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- 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
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- 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
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- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
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- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
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- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
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- 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
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Abstract
A recording medium, such as a high-density and/or optical recording medium including physical access control (PAC) information recorded thereon, and apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection, data management and/or reproduction compatibility.
Description
RECORDING MEDIUM WITH PHYSICAL ACCESS CONTROL (PAC) INFORMATION THEREON AND APPARATUS AND METHODS FOR FORMING, RECORDINGS AND REPRODUCING THE RECORDING MEDIUM
Technical Field The present invention relates to PAC (Physical Access Control), PAC zones, PAC
clusters, media containing PAC zones and/or clusters (for example, high density optical discs, such as Blu-rayTM DiscTM) and apparatus and methods for recording and/or reproducing data to and/or from the media.
Background Art Media, for example, optical discs may be used for recording a large quantity of data. Of the optical discs available, a new high density optical media (HD-DVD), for example, the Blu-ray Disc (hereafter called as `BD") is under development, which enables increased recording and/or storing of high definition video and/or audio data.
BD further includes a rewritable Blu-ray disc (BD-RE), Blu-ray disc writable once (BD-WO), and Blu-ray disc read only (BD-ROM).
Currently, one problem with existing systems is the potential incompatibility between drives of different versions, for example a drive of a previous version with a previous set of capabilities may have difficulty interacting with a medium that has interacted with a drive including at least one capability from a subsequent set of capabilities.
CA 02558895 2006-09-13 =
Technical Field The present invention relates to PAC (Physical Access Control), PAC zones, PAC
clusters, media containing PAC zones and/or clusters (for example, high density optical discs, such as Blu-rayTM DiscTM) and apparatus and methods for recording and/or reproducing data to and/or from the media.
Background Art Media, for example, optical discs may be used for recording a large quantity of data. Of the optical discs available, a new high density optical media (HD-DVD), for example, the Blu-ray Disc (hereafter called as `BD") is under development, which enables increased recording and/or storing of high definition video and/or audio data.
BD further includes a rewritable Blu-ray disc (BD-RE), Blu-ray disc writable once (BD-WO), and Blu-ray disc read only (BD-ROM).
Currently, one problem with existing systems is the potential incompatibility between drives of different versions, for example a drive of a previous version with a previous set of capabilities may have difficulty interacting with a medium that has interacted with a drive including at least one capability from a subsequent set of capabilities.
CA 02558895 2006-09-13 =
Disclosure of Invention Example embodiments of the present invention provide a PAC on a medium, such as a high density optical disc, and apparatus and methods for recording data to and reproducing data from the medium using a PAC.
Example embodiments of the present invention provide physical access control (PAC) information recorded thereon, in order to improve data protection, improve data management, improve reproduction compatibility, avoid destruction of data, and/or reduce unnecessary, repetitive operations.
Example embodiments of the present invention provide a medium, such as a high density optical disc, and apparatus and methods for managing a PAC.
Example embodiments of the present invention provide a medium, such as a high density optical disc, and apparatus and methods which use a PAC for managing data.
In an example embodiment, the present invention is directed to a recording medium including at least one physical access control (PAC) zone further including at least one physical access control (PAC) cluster, the at least one PAC cluster including information for managing recording to and/or reproducing from the recording medium.
In an example embodiment, the present invention is directed to a method of recording on a recording medium including recording a physical access control (PAC) cluster, the PAC
cluster including information for managing recording to and/or reproducing from the recording medium and recording status information for the PAC cluster, the status information including at least validity of the PAC cluster.
In an example embodiment, the present invention is directed to a method of reproducing from a recording medium including reading status information for at least one physical access control (PAC) cluster, the at least one PAC cluster including information for managing reproduction from the recording medium and reading the at least one PAC
cluster based on the status information, the status information including at least validity of each PAC cluster.
In an example embodiment, the present invention is directed to an apparatus for recording to and/or reproducing from a recording medium including a driver for driving an optical recording device to record data on the recording medium or reproduce data from the recording medium and a controller for controlling the driver to record or reproduce the data based on at least one physical access control (PAC) zone, the at least one PAC
zone including at least one physical access control (PAC) cluster, including information for managing recording to and/or reproducing from the recording medium, and status information for each PAC cluster, the status information indicating at least validity of each PAC
cluster.
In an example embodiment, the present invention is directed to an apparatus for recording to and/or reproducing from a recording medium including a driver for driving an optical recording device to record data on the recording medium or reproduce data from the recording medium and a controller for controlling the driver to record or reproduce the data based on at least one physical access control (PAC) zone, the at least one PAC
zone including at least one physical access control (PAC) cluster, said controller reading status information for at least one PAC cluster, the at least one PAC cluster including information for managing reproduction from the recording medium and said controller reading the at least one PAC
cluster based on the status information, the status information including at least validity of each PAC cluster.
In an example embodiment, the present invention is directed to a recording medium including at least one physical access control (PAC) cluster including information for managing recording to and/or reproducing from the recording medium and status information for each PAC cluster, the status information indicates at least validity of each PAC
cluster.
It is to be understood that both the foregoing general description and the following detailed description of embodiments of the present invention are examples and explanatory and are intended to provide further explanation of the invention as claimed.
Brief Description of Drawines The accompanying drawings, which are included to provide a further understanding of example embodiments of the invention and are incorporated in and constitute a part of this application, illustrate example embodiment(s) of the invention where, FIG 1 illustrates PAC zones on a high density optical disc in accordance with an example embodiment of the present invention;
FIG. 2 illustrates a diagram showing configurations of INFO2 zone and INFOI
zone on a WO 2005/091292 = = PCT/KR2004/003515 high density optical disc in accordance with an example embodiment of the present invention;
FIG 3 illustrates a structure of a PAC recorded on a high density optical disc in accordance with an example embodiment of the present invention;
Example embodiments of the present invention provide physical access control (PAC) information recorded thereon, in order to improve data protection, improve data management, improve reproduction compatibility, avoid destruction of data, and/or reduce unnecessary, repetitive operations.
Example embodiments of the present invention provide a medium, such as a high density optical disc, and apparatus and methods for managing a PAC.
Example embodiments of the present invention provide a medium, such as a high density optical disc, and apparatus and methods which use a PAC for managing data.
In an example embodiment, the present invention is directed to a recording medium including at least one physical access control (PAC) zone further including at least one physical access control (PAC) cluster, the at least one PAC cluster including information for managing recording to and/or reproducing from the recording medium.
In an example embodiment, the present invention is directed to a method of recording on a recording medium including recording a physical access control (PAC) cluster, the PAC
cluster including information for managing recording to and/or reproducing from the recording medium and recording status information for the PAC cluster, the status information including at least validity of the PAC cluster.
In an example embodiment, the present invention is directed to a method of reproducing from a recording medium including reading status information for at least one physical access control (PAC) cluster, the at least one PAC cluster including information for managing reproduction from the recording medium and reading the at least one PAC
cluster based on the status information, the status information including at least validity of each PAC cluster.
In an example embodiment, the present invention is directed to an apparatus for recording to and/or reproducing from a recording medium including a driver for driving an optical recording device to record data on the recording medium or reproduce data from the recording medium and a controller for controlling the driver to record or reproduce the data based on at least one physical access control (PAC) zone, the at least one PAC
zone including at least one physical access control (PAC) cluster, including information for managing recording to and/or reproducing from the recording medium, and status information for each PAC cluster, the status information indicating at least validity of each PAC
cluster.
In an example embodiment, the present invention is directed to an apparatus for recording to and/or reproducing from a recording medium including a driver for driving an optical recording device to record data on the recording medium or reproduce data from the recording medium and a controller for controlling the driver to record or reproduce the data based on at least one physical access control (PAC) zone, the at least one PAC
zone including at least one physical access control (PAC) cluster, said controller reading status information for at least one PAC cluster, the at least one PAC cluster including information for managing reproduction from the recording medium and said controller reading the at least one PAC
cluster based on the status information, the status information including at least validity of each PAC cluster.
In an example embodiment, the present invention is directed to a recording medium including at least one physical access control (PAC) cluster including information for managing recording to and/or reproducing from the recording medium and status information for each PAC cluster, the status information indicates at least validity of each PAC
cluster.
It is to be understood that both the foregoing general description and the following detailed description of embodiments of the present invention are examples and explanatory and are intended to provide further explanation of the invention as claimed.
Brief Description of Drawines The accompanying drawings, which are included to provide a further understanding of example embodiments of the invention and are incorporated in and constitute a part of this application, illustrate example embodiment(s) of the invention where, FIG 1 illustrates PAC zones on a high density optical disc in accordance with an example embodiment of the present invention;
FIG. 2 illustrates a diagram showing configurations of INFO2 zone and INFOI
zone on a WO 2005/091292 = = PCT/KR2004/003515 high density optical disc in accordance with an example embodiment of the present invention;
FIG 3 illustrates a structure of a PAC recorded on a high density optical disc in accordance with an example embodiment of the present invention;
5 FIG 4 illustrates a structure of a PAC on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 5 illustrates a configuration of an "Unknown PAC Rules" field in accordance with an example embodiment of the present invention;
FIG. 6 illustrates segment zones on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 7 illustrates a PAC zone on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 8 illustrates segment zones managed by a plurality of PAC zones on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 9 illustrates a Disc Definition Structure (DDS) on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 10 illustrates a DDS representing a PAC status on a high density optical disc in accordance with an example embodiment of the present invention;
FIGs. 11 to 13 illustrate diagrams showing several alternatives of a DDS, each representing a PAC status on a high density optical disc in accordance with an example embodiment of the S
FIG 5 illustrates a configuration of an "Unknown PAC Rules" field in accordance with an example embodiment of the present invention;
FIG. 6 illustrates segment zones on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 7 illustrates a PAC zone on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 8 illustrates segment zones managed by a plurality of PAC zones on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 9 illustrates a Disc Definition Structure (DDS) on a high density optical disc in accordance with an example embodiment of the present invention;
FIG 10 illustrates a DDS representing a PAC status on a high density optical disc in accordance with an example embodiment of the present invention;
FIGs. 11 to 13 illustrate diagrams showing several alternatives of a DDS, each representing a PAC status on a high density optical disc in accordance with an example embodiment of the S
present invention;
FIG. 14 illustrates additional alternatives of a DDS on a high density optical disc in accordance with example embodiments of the present invention;
FIG. 15 illustrates other alternatives of a DDS representing a PAC status on a high density optical disc in accordance with example embodiments of the present invention;
FIG 16 illustrates a DDS representing a PAC status on a high density optical disc in accordance with another example embodiment of the present invention;
FIG 17 illustrates a block diagram of an optical recording/reproducing apparatus in accordance with an example embodiment of the present invention; and FIG 18 illustrates a flow chart showing a method for recording to and/or reproducing from a high density optical disc having PAC recorded thereon in accordance with an example embodiment of the present invention.
Best Mode for Carrying Out the Invention Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
FIG. I illustrates a PAC zones on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 1, the high density optical disc may be partitioned, from an inner CA 02558895 2006-09-13 =
circumference to an outer circumference, into a lead-in zone, a data zone, and a lead-out zone.
The lead-in zone may further be partitioned into an INFO2 zone and an INFOI
zone for recording various kinds of information thereon. The INFO2 zone and/or the INFO1 zone may include PAC (Physical Access Control) zones.
For convenience, a PAC zone assigned to the INFO2 zone is labeled as a PACII
zone and the PAC zone assigned to the INFO1 zone is labeled a PACI zone. One of the PACII
zone and the PACI zone may have an original PAC recorded thereon and the other may be a back up zone for recording a copy of the original PAC. If a writing direction is from the inner circumference to the outer circumference of the disc, it may be advantageous that the original PAC is recorded on the PACII zone and the backup PAC is recorded on the PACI
zone.
The PAC zone may be provided to handle problems that may occur when an older version of a drive apparatus cannot detect functions on a disc added having functions compatible with a newer version of a drive apparatus. The PAC zone may handle compatibility problems using one or more an "unknown mules".
An "unknown rule" may be used to control predictable operations of the disc, for example, basic control of read, write, etc., linear replacement of a defective zone, logical overwrite, etc.
An area may also be provided on the disc, indicating where the "unknown rule"
is applicable, for example, segments for defining the entire disc or a certain portion of the disc, which is described later in more detail.
Thus, by defining an area of the disc, an older version drive apparatus is able to access by K
using the "unknown rule", a newer version of the disc reduces unnecessary access operation of the older version drive apparatus.
Moreover, by defining an accessible area on a physical area of the disc for an older version drive apparatus to access by using the PAC, a data area containing user data recorded thereon can be protected more robustly and/or unauthorized access (for example, hacking) of the disc may be prevented or reduced.
The INFO2 zone and the INFO1 zone having the PACII and I zones therein in the lead-in zone may be reviewed in view of writable characteristics of the high density optical disc.
FIG. 2 illustrates a diagram showing configurations of the INFO2 zone and the INFO/ zone on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 2, for an example BD-RE high density optical disc, the INFO2 zone may have 256 clusters including 32 clusters of PACII zone, 32 clusters of DMA
(Defect Management Area) 2 zone for management of defects, 32 clusters of CD (Control Data) 2 zone having control information recorded thereon, and/or 32 clusters of BZ
(Buffer Zone) 3 zone of a buffer zone.
The INFO1 zone may include 32 clusters of BZ2 zone of a buffer area, 32 clusters of drive area which may be a drive area for storing information specific to a drive, 32 clusters of DMA1 zone for managing defects, 32 clusters of CD 1 zone for recording control information, and/or a BZI-PACI zone utilizable as the PAC zone.
CA 02558895 2006-09-13 =
For a write once high density optical disc (BD-R), the INFO2 zone may have 256 clusters including a PACII zone, a DMA 2 zone, a CD 2 zone, and a BZ 3 zone, each with 32 clusters, and the INFO1 zone includes a BZ2 zone, a DMAI zone, a CD1 zone, and/or a BZI-PACI
zone, each with 32 clusters, and 128 clusters of drive area, For a read only high density optical disc (BD-ROM), a PAC may be a primary PAC
and the INFO2 zone may have 256 clusters including a PACII zone, a CD 2 zone, and a BZ
3 zone, each with 32 clusters, and the INFOl zone 256 clusters including a CDI zone, and/or a BZ1-PACI zone, each with 32 clusters.
The PAC zones of example embodiments of the present invention may be assigned to the INFO2 zone and/or the INFO1 zone in the lead-in zone in 32 clusters each, according to rewritable characteristics of the high density optical disc.
In the PAC zone of 32 clusters, one PAC may have one cluster, for recording a plurality of valid PACs. An example structure in which one PAC is recorded as one cluster is described with reference to FIG 3.
FIG. 3 illustrates a PAC recorded on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 3, one PAC of one cluster size (32 sectors) may include a header zone and a specific information zone, specific to a particular disc drive (for example, optical disc drive).
The PAC header zone may have 384 bytes allocated to a first sector of the PAC, for recording various kinds of PAC information, such as information on an "unknown PAC rule"
and CA 02558895 2006-09-13 =
segments, and another area of the PAC zone may have information specific to the (optical) disc drive may be referred to as "known rules" recorded thereon.
An example structure of a PAC recorded in above structure is described with reference to FIG.
4. For convenience, in the description, particular fields of the PAC that require more 5 detailed description will refer to drawings that illustrate the particular fields.
FIG 4 illustrates a PAC on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 4, the PAC may include a header portion applicable to all PACs and an area having information specific to the drive, recorded thereon.
10 An example header portion may include 4 bytes of "PAC_ID", 4 bytes of "Unknown PAC
Rules", 1 byte of "Entire Disc Flag", 1 byte of "Number of Segments", and/or 32 "segments Segment_0 - Segment_31 each with 8 bytes.
The "PAC-ID" may provide the present PAC status and identification codes, for example, if the "PAC-ID" contains '00 00 00 00' bits, the "PAC_ID" indicates that the present PAC is not used, if the "PAC-ID" contains `FF FF FF FE' bits, the "PAC ID" indicates that the present PAC zone is not available for use due to defects or something similar, and if the "PAC_ID" contains `FF FF FF FF' bits, the "PAC-11)" indicates that the present PAC zone is available for use again even if the PAC zone has been used previously.
By recording the "PAC ID" in predetermined bits, such as '54 53 54 00' bits, the "PAC ID"
may be used as a code for determining if the disc is a disc for which a present drive can have CA 02558895 2006-09-13 =
free access to. That is, if the present drive does not recognize the "PAC_ D"
applied thereto (possibly a case where the present drive can not recognize the present PAC due to version mismatch or similar problem), the '54 53 54 00' bits may be used as code to refer to information recorded in the "Unknown PAC Rules" field.
As described, the "Unknown PAC Rules" field may be used as a field that designates an operation range of a drive that can not recognize the present PAC, which will be described further with reference to FIG 5.
FIG 5 illustrates an "Unknown PAC Rules" field in accordance with an example embodiment of the present invention.
Referring to FIG. 5, a degree of controllability of various areas on the disc maybe enabled by the "Unknown PAC Rules". In this example, the "Area" column in Fig. 5 represents the controllable areas on the disc, the "Control" column represents control types, such as read/write etc., and "Number of bits" column represents a number of bits required for control.
The additional bits in the "Number of bits" column may represent cases of dual layer disc with two recording/reproduction sides.
For example, in the "Area" column in Fig. 5, read/write controllability of the PAC zone can be represented with "PAC zones 1, 2" fields, and write controllability of a defect management zone can be represented with `MA Zone 1, 2" fields. Write controllability of a replacement area for a defective area can be represented with "Replacement Clusters"
field, read/write controllability of a data zone can be represent with a "Data Zone" field, and logical overwrite = CA 02558895 2006-09-13 =
controllability can be represented with a "Logical Overwrite" field.
Write controllability is applicable only to re-writable discs BD-RE and BD-R
and the write controllability of a replacement area for a defective area is also applicable to the re-writable discs BD-RE and BD-R. As a result, various example features of the present invention may depend on the re-writable characteristics of the high density (optical) disc.
Using the above technique, the "Unknown PAC Rules" field enables designation of a controllable area on the disc for a drive with a version mismatch. Moreover, the above technique may also be applicable to control access to a particular physical area on a disc at a user's option.
Returning to Fig. 4, the "Entire Disc Flag" field may be used as a field for indicating that the PAC is applicable to an entire area of the disc and the "Number of Segments"
field is a field that may represent a number of segment areas to which the PAC is applicable.
In an example embodiment, a maximum number of segments may be allocatable to one PAC.
In an example embodiment, a maximum number of 32 segments can be allocated to one PAC and information on the allocated segments may be written in "Segment-0" to "Segment_31" fields, each including 8 bytes. Each of the "Segment-0-31" fields may include the first physical sector number (PSN) and the last PSN of the allocated segment area recorded thereon.
Segments are described in more detail below. FIG 6 illustrates segment zones on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 6, if required, there may be a maximum number (for example, 32) of segment areas on the high density optical disc, for applying the PAC thereto.
The maximum number of segment area may start from "segment 0".
In an example, positions of the segment areas may be identified by an optical disc drive by writing the first PSN, which may indicate a starting position of the allocated segment area and the last PSN which may indicate the last position of the allocated segment area on "Segment" fields of PACII and PACI zones.
In an example arrangement, none of the plurality of allocated segments need overlap and the starting and ending positions may be designated at boundaries of clusters.
Thus, in example embodiments, the present invention may provide a plurality of PACs, to manage a number (for example, 32) segment areas, which are described in more detail below.
FIG 7 illustrates a PAC zone on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 7, a plurality of valid PACs, each with a common cluster size, may be written in one PAC zone (for example, the PAC zone of INFO2 or INFO1) of 32 clusters.
A valid PAC may represent a zone having various kinds of PAC information described above, and including copies, may include a maximum (for example, 16) valid PACs, each with a common size, which can be allocated to one PAC zone.
A valid PAC may have a predetermined PAC-ID (for an example, PAC-ID = 54 53 54 00) according to a drive version of the optical disc having the PAC recorded thereon, and a PAC
= CA 02558895 2006-09-13 =
]y zone not used may be a spare PAC zone. The spare PAC zone may be filled with 00 bits (PAC_ID = 00 00 00 00) indicating that the zone is not used or may be left as a "not used area", depending on a setting of the optical disc drive.
Because only one write is physically possible in the case of a write-once high density optical disc BD-R, in an example, nothing is written in the spare area until writing is completed or until the disc is closed (no additional writing is desired by the user).
Because physical repetitive overwrite is possible in the case of a re-writable high density optical disc BD-RE, in an example, even if the valid PACs and Copy PACs thereof are written in the PAC zone of 32 clusters, a number of writing times in acceptable.
If a defect is present in one PAC zone in the PAC to be written therein, the PAC may be written in an area next to the defective area. A defect may be a result of damage to, or contamination of a disc surface, and when the defect occurs in the area the PAC is to be written, the PAC information may be written in an area next to the defective area.
The plurality of valid PACs which can be allocated to the PAC zone may have various kinds of information regarding controllable areas of tine disc, which are described with reference to FIG 8.
FIG 8 illustrates segment zones managed by a plurality of PAC zones on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 8, for drives of different versions, controllable segment areas may be designated on the disc by using the plurality of PACs. That is, it is possible to control a WO 2005/091292 = PCT/KR2004/003515 segment 0 Seg #0, and segment 1 Seg #1 via PAC #0 on the disc, a segment 0 Seg #0, segment 1 Seg #1, and segment 2 Seg #2 on the disc via PAC #1, and segment 0 Seg #0 on the disc via PAC #2.
In this example, none of the segments areas controllable by respective PACs overlap and the 5 segments areas are reordered in an ascending order starting from segment #0, which indicates that the PACs maybe independent from each other.
Moreover, even though one PAC may have a maximum of 32 segment areas, a total number of the segments managed by the plurality of PACs may also not exceed 32, even in an example where the segments are managed by a plurality of PACs.
10 Finding a position of the valid PAC zone from the PAC zone or quick finding of a position of a next writable PAC zone, while avoiding an area written already to or a defective area from above PAC zone, may affect initialization and/or recording speed of the disc. In particular, many retries may be executed to attempt to read a defective area.
In example embodiments, the present invention provides a method in which various status 15 information on positions of the plurality of valid PACs, a position of the next writable PAC, and/or other relevant information is written, for example, in a data structure, such as a Disc Definition Structure (DDS).
A DDS may be a zone containing information on a first PSN of a defect list, a position of a user data zone, sizes of spare areas, and/or other relevant information, and may be information written in the DMA zone of the disc as information in a Defect Management CA 02558895 2006-09-13 =
Structure (DMS) together with a Defect List (DFL).
The information written in the DMA may be information scanned and pre-loaded in advance when the disc is loaded into a drive. Therefore, once various status information on the PAC, such as positions of the plurality of valid PACs, a position of the next writable PAC, and/or other relevant information is written in the DDS as pointers, the optical disc drive may obtain information on the PAC zone without needing to scan all the PAC zones.
A DDS may include various kinds of information on status of the PAC zone and will be described below.
FIG, 9 illustrates a DDS on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 9, the DDS may include a "DDS identifier" field, a "DDS
format" field, a "First PSN of Drive Area (P DA)" field representing the first physical sector number of a drive area, a "First PSN of Defect List (P_DFL)" field representing the first PSN of the defect list, a "Location of LSN 0 of User Data Area" field representing a position of an LSN (logical sector number) of the user data area, an "Inner Spare Area 0 size (ISAO_size)"
field representing a size of an inner spare area 0, an "Outer Spare Area size (OSA
size)" field representing a size of an outer spare area 0, an "Inner Spare Area 1 size (ISA1_size)" field representing a size of an inner spare area 1, a PAC Clusters Defect Status"
field representing a defect status of the PAC zone, and/or a "PAC Allocated Space" field representing a designated status of the PAC zone.
WO 2005/091292 = PCT/KR2004/003515 Thus, an example DDS may provide various kinds of status information on the PAC, such as a position of defective cluster in the PAC zone and/or a position of clusters having valid PAC
allocated thereto by using the "PAC Clusters Defect Status" field and/or the "PAC Allocated Space" field.
A method of representing PAC status information using the "PAC Clusters Defect Status"
field and/or the "PAC Allocated Space" field will be described in more detail below.
FIG 10 illustrates a diagram showing a DDS representing a PAC status on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG 10, two bytes may be allocated to the "PAC Clusters Defect Status" field of the DDS, for representing a writing failure due to a cluster defect of the PAC
zone of a defective cluster area.
As shown, a PDS N (PAC Defect Status) bit in FIG. 10 is a bit for indicating the status of the PAC clusters, wherein a 0 bit may indicate the PAC cluster N is not a defective area and a I
bit may indicate the PAC cluster N is a defective area.
The PDS 0 bit may indicate a status of the PAC #0 zone, the PDS 1 bit may indicate a status of the PAC #1 zone, and so on, up to PDS 15 bit (for example, for 16) for indicating status of valid PACs, which can be allocated to one PAC zone.
Two bytes may also allocated to the "PAC Allocated Space" field of the DDS
zone, for indicating an allocation status of the PAC zone.
The PSB N (PAC Status Bit) in FIG. 10 may be a bit indicating the allocation status of the CA 02558895 2006-09-13 =
PAC clusters, wherein a 0 bit may indicate a status in which the PAC cluster N
can be newly allocated, for example, the PAC is not used or PAC-ID = 00000000 or FFFFFFFF
state and a 1 bit may indicate a status in which the PAC cluster N is allocated.
In this example, like the PDS bits, the PSB bits may be allocated from a PSB 0 bit to a PSB
15 bit, such that the PSB 0 bit indicates PAC #0 zone, PSB 1 bit indicates PAC
#1 zone, etc.
Various example embodiments in which a status of the PAC zone is represented using a DDS, for example, as described, will be discussed below.
FIGs. 11 to 13 illustrate diagrams showing various example embodiments of a DDS, each representing a PAC status on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FICA 11, the PDS 1 bit is I on a bitmap of the "PAC Clusters Defect Status" field, which is information on a defective area of the PAC zone in the information contained in the DDS. Accordingly, an optical disc drive may be made aware that the PAC #1 zone is defective based on the information.
Also, each of PSB 0, PSB 1, and PSB 2 bits is also 1 on a bitmap of the "PAC
Allocated Space" field indicating an allocation status of the PAC zone, and an optical disc drive may be made aware that the PAC #0, PAC #1, and PAC #2 zones are in allocated states based on the above information. Therefore, the next available PAC zone that is not defective area and not an allocated area, is PAC #3 zone.
Also, referring to FIG. 12, because each of the PDS 0, PDS 1, PDS 4, and PDS 5 bits is 1 on the bitmap of the "PAC Clusters Defect Status" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #4, and PAC #5 zones is a defective area, and because each the PSB 0, PSB 1, PSB 2, PSB 3, PSB 4, PSB 5, and PSB 6 bits is 1 on the bitmap of the `PAC Allocated Space" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #2, PAC #3, PAC #4, PAC #5, and PAC #6 zones is in an allocated status. Therefore, in the case of FIG 12, the next available PAC
zone is PAC #7.
Also, referring to FIG. 13, because each of the PDS 0, PDS 1, PDS 4, and PDS 5 bits is 1 on the bitmap of the "PAC Clusters Defect Status" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #4, and PAC #5 zones is a defective area, and because each of the PSB 0, PSB 1, PSB 2,, PSB 4, PSB 5, and PSB 6 bits is 1 on the bitmap of the "PAC Allocated Space" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #2, PAC #4, PAC #5, and PAC #6 zones is in an allocated status.
Therefore, in the case of FIG 13, the next available PAC zone is PAC #3, which may be an area which is presently re-usable, even if the PAC #3 area was used previously.
As set forth above, a copy of information on the PAC II zone of the INFO 2 zone, may be recorded on an area of the PAC I zone of the INFO 1 zone corresponding to an area of the PAC II zone of the INFO 2 zone. If the PAC #1 zone of the PAC II zone is defective, the PAC
I zone of the PAC #1 zone may be used (if not defective).
It is also possible that the DDS is made to include, not only the information on the 4 bytes of PAC II zone, but also information on the PAC I zone by allocating additional (for example, 4) WO 2005/091292 = PCT/KR2004/003515 bytes to the DDS. In this case, the information written on the PAC I will be free from the defective area of the PAC II zone.
FIG. 14 illustrates a diagram showing another embodiment of a DDS on a high density optical disc in accordance with another example embodiment of the present invention.
5 Referring to FIG 14, as described above, the DDS may include a "DDS
identifier" field, a "DDS format" field, a "First PSN of Drive Area (P_DA)" field, a "First PSN of Defect List (P_DFL)" field, a "Location of LSN 0 of User Data Area" field, an "Inner Spare Area 0 size (ISAO_size)" field, an "Outer Spare Area size (OSA size)" field, and an "Inner Spare Area 1 size (ISA1_size)" field, and/or a "PAC Status" field representing a status of the PAC zone.
10 The "PAC Status" field may have 8 bytes, for representing status of the PACs in the PAC II
zone of the INFO 2 zone and the PAC I zone of the INFO 1 zone, which will be described in detail below.
FIG 15 illustrates a diagram showing another embodiment of a DDS representing a PAC
status on a high density optical disc in accordance with another example embodiment of the 15 present invention.
Referring to FIG. 15, the "PAC Status" field of the DDS may use 64 bits (8 bytes) in total for representing status of PACs in PAC II zone of the INFO 2 zone and PAC I zone of the INFO
1 zone.
In this example, information in one PAC may be represented with two bits, for example, by 20 allocating bits b 1 and bO to indicate a status of the PAC #0 of the PAC I
zone, and bits b2 and = CA 02558895 2006-09-13 b3 to indicate a status of the PAC #2 of the PAC I zone, and every subsequent two bits indicating a PAC status of the PAC zone in succession. Accordingly, bits b31 and b30 may represent the PAC #15 status of the PAC I zone, bits b33 and b32 may indicate the PAC #0 status of the PAC 2 zone, and bits b63 and b62 may indicate the PAC #15 status of the PAC 2 zone.
The PAC status of the PAC zone represented with two bits may indicate that the PAC is unrecorded when the two bits are 00, the PAC is written in 00 00 00 00 bits to indicate that the PAC is writable or in FF FF FF FF bits to indicate that the PAC is re-usable even if the PAC has been used before when the two bits are 01, the PAC is a defective area FF FF FF FE
when the two bits are 10, and the PAC is a valid PAC (for example, Valid PAC =
54 53 54 00) when the two bits are 11.
Therefore, the next writable PAC zone is an area with bits 00 or bits 01, and a position of the valid PAC will be an area with bits 11.
By using the above method, the optical disc drive may obtain information on a position of the valid PAC, a position of a defective area, a next writable position, and/or other relevant information on the PACs written in the PAC 2 zone and the PAC 1 zone from the 8 bytes of "PAC Status" field inserted in the DDS zone.
FIG. 16 illustrates a DDS representing a PAC status on a high density optical disc in accordance with another example embodiment of the present invention.
If a bitmap of the 'S'AC Status" field of the DDS is the same as illustrated in FIG 16, since the b33 and b32 bits indicating the PAC #0 in the PAC II zone is 11, it is known that the PAC
#0 in the PAC II zone is a valid PAC.
Also, since the b35 and b34 bits indicating the PAC #1 in the PAC Ti zone are 10, it is known that the PAC #1 in the PAC II zone is a defective area, and since the b37 and b36 bits indicating the PAC #2 in the PAC II zone are 01, it is known that the PAC #2 in the PAC II
zone is an area used previously, or if 00, usable presently.
Accordingly, if it is intended to find the position of the valid PAC, the optical disc drive may find the PAC with the bits 11 of the "PAC Status" field information of the DDS
indicates, and when it is intended to find the position of a next writable PAC zone, the optical disc drive may find bits 01 or 00 in the "PAC Status" information.
Moreover, a back up of the PAC information in the PACE zone may be written on the PACI
zone, even though the bitmap indicating the PACE zone of the "PAC Status"
field and the bitmap indicating the PACI zone are identical, if positions of the defective areas and/or other similar areas are not identical, the two bitmaps may not be identical.
Therefore, if it is intended to read information written on the PACI zone due to an unavoidable situation, it may be necessary to refer to information indicating the PACI zone from the "PAC
Status" field information of the DDS.
Other than the example method for representing the PAC status of the PACII
zone and the PACI zone with 8 bytes in the DDS, there are also other example methods for representing only the PAC status of the PACII zone with only four bytes. This is, as described above, because information written on the PACII zone and the information written on the PACI zone is identical, and, in this instance, if it is desired to know the PAC status of the PACI zone, the PACI zone can be determined from a position of the PACII zone corresponding to the PACI
zone.
In this example, if writing of the PAC information on the PACI zone corresponding to a position of the PACII zone fails due to defective area or other similar circumstance in the PACII or PACI zone, a method of not using the area may be employed.
Information representing positions of a plurality of valid PACs with the DDS
like the example embodiments of the present invention may be favorable for a writable disc BD-RE, or R in which information is updated by successive writing.
For example, in the case of a write once high density optical disc BD-R, in which positions of the plurality of valid PACs are changed whenever writing is repeated after ejection due to the physical characteristics of the write once disk, the position information may be written on a Temporary Disc Management Area (TDMA) as a Temporary Disc Definition Structure (TDDS) information and written as DDS information at the time of completion of disc writing or disc closing, when no more writing is desired by the user.
FIG 17 illustrates a block diagram of an optical recording/reproducing apparatus in accordance with an example embodiment of the present invention.
Referring to FIG. 17, the optical recording/reproducing apparatus may include a recording/reproducing device 10 for performing recording to and/or reproduction from the optical disc, and a host, or controller 20 for controlling the recording/reproducing device 10.
In an example embodiment, the recording/reproducing device 10 may act as the "optical disc drive" discussed above in conjunction with many example embodiments of the present invention.
In an example embodiment, the host 20 gives a writing or reproduction instruction to write to or reproduce from a particular area of the optical disc to the recording/reproducing device 10, and the recording/reproducing device 10 performs the recording/reproduction to/from the particular area in response to the instruction from the host 20.
The recording/reproducing device 10 may further include an interface part 12 for performing communication, such as exchange of data and instructions with the host 20, a pickup part 11 for writing/reading a data to/from the optical disc directly, a data processor 13 for receiving a signal from the pickup part 11 and recovering a desired signal value or modulating a signal to be written into a signal able to be written on the optical disc, , a servo part 14 for controlling the pickup part 11 to read a signal from the optical disc accurately or to write a signal on the optical disc accurately, a memory 15 for temporary storage of various kinds of information including management information and data, and a microcomputer 16 for controlling various parts of the recording/reproducing device 10.
An example method for recording a PAC on a high density writable optical disc using the example optical recording/reproducing apparatus will be described below.
Upon inserting the optical disc into the optical recording/reproducing apparatus, management WO 2005/091292 = = PCT/KR2004/003515 information may be read from the optical disc and stored in the memory 15 of the recording/reproducing device 10, for use at the time of recording/reproduction of the optical disc.
In this state, if the user desires to write on a particular area of the optical disc, the host 20, 5 taking this as a writing instruction, provides information on a desired writing position to the recording/reproducing device 10, together with a data to be written.
The microcomputer 16 in the recording/reproducing device 10 may receive the writing instruction, determine if the area of the optical disc the host 20 desires to write is a defective area or not from the management information stored in the memory IS, and/or perform data 10 writing according to the writing instruction from the host 20 on an area which is not a defective area.
If it is determined that writing on an entire disc or on a particular area of the disc includes new features which a previous version of the recording/reproducing device is not provided with, leading the previous version of the recording/reproducing device to fail to sense, or if it 15 is intended to restrict functions, such as writing or reproducing to/from a particular area of the disc according to restriction set by the user, the microcomputer 16 of the recording/reproducing device 10 may write control information of the area in the PAC zone on the disc as an "Unknown PAC rule". The microcomputer 16 of the recording/reproducing device 10 may also write PAC information, such as the PAC ID for a written state, and 20 segment information which is control information on the particular area of the disc.
. .
The PAC information may be written as a plurality of valid PACs on the PAC 2 zone of the INFO 2 zone at one cluster size and the plurality of valid PACs may be written on the PACI
zone of the INFO I zone as a backup. In this example, position information of the plurality of valid PACs may be written on the DDS in the DMA of the optical disc by a method in accordance with example embodiments of the present invention.
In particular, the microcomputer 16 may provide position information on the area the data is written thereon or the PAC zone, and the data to the servo 14 and the data processor 13, so that the writing is finished at a desired position on the optical disc via the pickup part 11.
Additionally, a method for recording/reproducing the high density optical disc having PAC
information written by the above example method will be described below.
FIG. 18 illustrates a flowchart showing a method for recording /reproducing a high density optical disc having PAC recorded thereon in accordance with an example embodiment of the present invention.
Upon inserting an optical disc into the optical recording/reproducing apparatus, management information may be read from the optical disc and stored in the memory 15 of the recording and reproducing device 10, for use at the time of recording and reproduction of the optical disc.
The information in the memory 10 may include position information of various zones in the PAC zone on the disc. Particularly, positions of valid PACs in the PAC zone can be determined from the DDS information (S 10).
After positions of the valid PACs are determined, a PAC ID field of the PAC
may be examined, to verify if the PAC ID is an identified PAC_ID (S20 and S30).
If the written PAC ID is identified, the method may determine that the recording and reproducing device having written the data on the disc is identical in version to a version of the present recording and reproducing device or determine there is no separate writing/reproduction restrictions, and the recording/reproduction may be executed according to the instruction from the host 20 (S40).
If identifying a code written on the PAC-ID fails, the method may then determine if there are restrictions, such as the recording and reproducing device having written the data on the disc has a version different from a version of the present recording and reproducing device, the recording/reproduction may be executed according to the instruction from the host with reference to recording/reproduction restriction areas on the disc written on the "Unknown PAC rule" (S50).
For this, the microcomputer 16 may provide the position information and data according to the instruction of the host to the servo 14 and the data processor 13, so that the recording/reproduction is finished at a desired position on the optical disc via the pickup part 11.
As has been described, the apparatus and method for recording/reproduction to/from a high density optical disc of the present invention may have one or more of the following advantages.
First, the definition of an accessible area of a disc of a different version drive by using PACs may permit more robust protection of a data area having user data recorded thereon, for example, to prevent or reduce unauthorized access (for example, hacking).
Second, a plurality of valid PACs on the disc and/or pointers indicating positions of the PACs may permit more effective management of the PACs on the high density optical disc.
Third, apparatus and method for recording/reproducing data using PACs may permit more effective data recording/reproduction on a high density optical disc.
Industrial Applicability In the foregoing specification, the invention has been described with reference to specific embodiments thereof. However, the scope of the claims should not be limited by these preferred embodiments, but should be given the broadest interpretation consistent with the description as a whole.
FIG. 14 illustrates additional alternatives of a DDS on a high density optical disc in accordance with example embodiments of the present invention;
FIG. 15 illustrates other alternatives of a DDS representing a PAC status on a high density optical disc in accordance with example embodiments of the present invention;
FIG 16 illustrates a DDS representing a PAC status on a high density optical disc in accordance with another example embodiment of the present invention;
FIG 17 illustrates a block diagram of an optical recording/reproducing apparatus in accordance with an example embodiment of the present invention; and FIG 18 illustrates a flow chart showing a method for recording to and/or reproducing from a high density optical disc having PAC recorded thereon in accordance with an example embodiment of the present invention.
Best Mode for Carrying Out the Invention Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
FIG. I illustrates a PAC zones on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 1, the high density optical disc may be partitioned, from an inner CA 02558895 2006-09-13 =
circumference to an outer circumference, into a lead-in zone, a data zone, and a lead-out zone.
The lead-in zone may further be partitioned into an INFO2 zone and an INFOI
zone for recording various kinds of information thereon. The INFO2 zone and/or the INFO1 zone may include PAC (Physical Access Control) zones.
For convenience, a PAC zone assigned to the INFO2 zone is labeled as a PACII
zone and the PAC zone assigned to the INFO1 zone is labeled a PACI zone. One of the PACII
zone and the PACI zone may have an original PAC recorded thereon and the other may be a back up zone for recording a copy of the original PAC. If a writing direction is from the inner circumference to the outer circumference of the disc, it may be advantageous that the original PAC is recorded on the PACII zone and the backup PAC is recorded on the PACI
zone.
The PAC zone may be provided to handle problems that may occur when an older version of a drive apparatus cannot detect functions on a disc added having functions compatible with a newer version of a drive apparatus. The PAC zone may handle compatibility problems using one or more an "unknown mules".
An "unknown rule" may be used to control predictable operations of the disc, for example, basic control of read, write, etc., linear replacement of a defective zone, logical overwrite, etc.
An area may also be provided on the disc, indicating where the "unknown rule"
is applicable, for example, segments for defining the entire disc or a certain portion of the disc, which is described later in more detail.
Thus, by defining an area of the disc, an older version drive apparatus is able to access by K
using the "unknown rule", a newer version of the disc reduces unnecessary access operation of the older version drive apparatus.
Moreover, by defining an accessible area on a physical area of the disc for an older version drive apparatus to access by using the PAC, a data area containing user data recorded thereon can be protected more robustly and/or unauthorized access (for example, hacking) of the disc may be prevented or reduced.
The INFO2 zone and the INFO1 zone having the PACII and I zones therein in the lead-in zone may be reviewed in view of writable characteristics of the high density optical disc.
FIG. 2 illustrates a diagram showing configurations of the INFO2 zone and the INFO/ zone on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 2, for an example BD-RE high density optical disc, the INFO2 zone may have 256 clusters including 32 clusters of PACII zone, 32 clusters of DMA
(Defect Management Area) 2 zone for management of defects, 32 clusters of CD (Control Data) 2 zone having control information recorded thereon, and/or 32 clusters of BZ
(Buffer Zone) 3 zone of a buffer zone.
The INFO1 zone may include 32 clusters of BZ2 zone of a buffer area, 32 clusters of drive area which may be a drive area for storing information specific to a drive, 32 clusters of DMA1 zone for managing defects, 32 clusters of CD 1 zone for recording control information, and/or a BZI-PACI zone utilizable as the PAC zone.
CA 02558895 2006-09-13 =
For a write once high density optical disc (BD-R), the INFO2 zone may have 256 clusters including a PACII zone, a DMA 2 zone, a CD 2 zone, and a BZ 3 zone, each with 32 clusters, and the INFO1 zone includes a BZ2 zone, a DMAI zone, a CD1 zone, and/or a BZI-PACI
zone, each with 32 clusters, and 128 clusters of drive area, For a read only high density optical disc (BD-ROM), a PAC may be a primary PAC
and the INFO2 zone may have 256 clusters including a PACII zone, a CD 2 zone, and a BZ
3 zone, each with 32 clusters, and the INFOl zone 256 clusters including a CDI zone, and/or a BZ1-PACI zone, each with 32 clusters.
The PAC zones of example embodiments of the present invention may be assigned to the INFO2 zone and/or the INFO1 zone in the lead-in zone in 32 clusters each, according to rewritable characteristics of the high density optical disc.
In the PAC zone of 32 clusters, one PAC may have one cluster, for recording a plurality of valid PACs. An example structure in which one PAC is recorded as one cluster is described with reference to FIG 3.
FIG. 3 illustrates a PAC recorded on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 3, one PAC of one cluster size (32 sectors) may include a header zone and a specific information zone, specific to a particular disc drive (for example, optical disc drive).
The PAC header zone may have 384 bytes allocated to a first sector of the PAC, for recording various kinds of PAC information, such as information on an "unknown PAC rule"
and CA 02558895 2006-09-13 =
segments, and another area of the PAC zone may have information specific to the (optical) disc drive may be referred to as "known rules" recorded thereon.
An example structure of a PAC recorded in above structure is described with reference to FIG.
4. For convenience, in the description, particular fields of the PAC that require more 5 detailed description will refer to drawings that illustrate the particular fields.
FIG 4 illustrates a PAC on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 4, the PAC may include a header portion applicable to all PACs and an area having information specific to the drive, recorded thereon.
10 An example header portion may include 4 bytes of "PAC_ID", 4 bytes of "Unknown PAC
Rules", 1 byte of "Entire Disc Flag", 1 byte of "Number of Segments", and/or 32 "segments Segment_0 - Segment_31 each with 8 bytes.
The "PAC-ID" may provide the present PAC status and identification codes, for example, if the "PAC-ID" contains '00 00 00 00' bits, the "PAC_ID" indicates that the present PAC is not used, if the "PAC-ID" contains `FF FF FF FE' bits, the "PAC ID" indicates that the present PAC zone is not available for use due to defects or something similar, and if the "PAC_ID" contains `FF FF FF FF' bits, the "PAC-11)" indicates that the present PAC zone is available for use again even if the PAC zone has been used previously.
By recording the "PAC ID" in predetermined bits, such as '54 53 54 00' bits, the "PAC ID"
may be used as a code for determining if the disc is a disc for which a present drive can have CA 02558895 2006-09-13 =
free access to. That is, if the present drive does not recognize the "PAC_ D"
applied thereto (possibly a case where the present drive can not recognize the present PAC due to version mismatch or similar problem), the '54 53 54 00' bits may be used as code to refer to information recorded in the "Unknown PAC Rules" field.
As described, the "Unknown PAC Rules" field may be used as a field that designates an operation range of a drive that can not recognize the present PAC, which will be described further with reference to FIG 5.
FIG 5 illustrates an "Unknown PAC Rules" field in accordance with an example embodiment of the present invention.
Referring to FIG. 5, a degree of controllability of various areas on the disc maybe enabled by the "Unknown PAC Rules". In this example, the "Area" column in Fig. 5 represents the controllable areas on the disc, the "Control" column represents control types, such as read/write etc., and "Number of bits" column represents a number of bits required for control.
The additional bits in the "Number of bits" column may represent cases of dual layer disc with two recording/reproduction sides.
For example, in the "Area" column in Fig. 5, read/write controllability of the PAC zone can be represented with "PAC zones 1, 2" fields, and write controllability of a defect management zone can be represented with `MA Zone 1, 2" fields. Write controllability of a replacement area for a defective area can be represented with "Replacement Clusters"
field, read/write controllability of a data zone can be represent with a "Data Zone" field, and logical overwrite = CA 02558895 2006-09-13 =
controllability can be represented with a "Logical Overwrite" field.
Write controllability is applicable only to re-writable discs BD-RE and BD-R
and the write controllability of a replacement area for a defective area is also applicable to the re-writable discs BD-RE and BD-R. As a result, various example features of the present invention may depend on the re-writable characteristics of the high density (optical) disc.
Using the above technique, the "Unknown PAC Rules" field enables designation of a controllable area on the disc for a drive with a version mismatch. Moreover, the above technique may also be applicable to control access to a particular physical area on a disc at a user's option.
Returning to Fig. 4, the "Entire Disc Flag" field may be used as a field for indicating that the PAC is applicable to an entire area of the disc and the "Number of Segments"
field is a field that may represent a number of segment areas to which the PAC is applicable.
In an example embodiment, a maximum number of segments may be allocatable to one PAC.
In an example embodiment, a maximum number of 32 segments can be allocated to one PAC and information on the allocated segments may be written in "Segment-0" to "Segment_31" fields, each including 8 bytes. Each of the "Segment-0-31" fields may include the first physical sector number (PSN) and the last PSN of the allocated segment area recorded thereon.
Segments are described in more detail below. FIG 6 illustrates segment zones on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 6, if required, there may be a maximum number (for example, 32) of segment areas on the high density optical disc, for applying the PAC thereto.
The maximum number of segment area may start from "segment 0".
In an example, positions of the segment areas may be identified by an optical disc drive by writing the first PSN, which may indicate a starting position of the allocated segment area and the last PSN which may indicate the last position of the allocated segment area on "Segment" fields of PACII and PACI zones.
In an example arrangement, none of the plurality of allocated segments need overlap and the starting and ending positions may be designated at boundaries of clusters.
Thus, in example embodiments, the present invention may provide a plurality of PACs, to manage a number (for example, 32) segment areas, which are described in more detail below.
FIG 7 illustrates a PAC zone on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 7, a plurality of valid PACs, each with a common cluster size, may be written in one PAC zone (for example, the PAC zone of INFO2 or INFO1) of 32 clusters.
A valid PAC may represent a zone having various kinds of PAC information described above, and including copies, may include a maximum (for example, 16) valid PACs, each with a common size, which can be allocated to one PAC zone.
A valid PAC may have a predetermined PAC-ID (for an example, PAC-ID = 54 53 54 00) according to a drive version of the optical disc having the PAC recorded thereon, and a PAC
= CA 02558895 2006-09-13 =
]y zone not used may be a spare PAC zone. The spare PAC zone may be filled with 00 bits (PAC_ID = 00 00 00 00) indicating that the zone is not used or may be left as a "not used area", depending on a setting of the optical disc drive.
Because only one write is physically possible in the case of a write-once high density optical disc BD-R, in an example, nothing is written in the spare area until writing is completed or until the disc is closed (no additional writing is desired by the user).
Because physical repetitive overwrite is possible in the case of a re-writable high density optical disc BD-RE, in an example, even if the valid PACs and Copy PACs thereof are written in the PAC zone of 32 clusters, a number of writing times in acceptable.
If a defect is present in one PAC zone in the PAC to be written therein, the PAC may be written in an area next to the defective area. A defect may be a result of damage to, or contamination of a disc surface, and when the defect occurs in the area the PAC is to be written, the PAC information may be written in an area next to the defective area.
The plurality of valid PACs which can be allocated to the PAC zone may have various kinds of information regarding controllable areas of tine disc, which are described with reference to FIG 8.
FIG 8 illustrates segment zones managed by a plurality of PAC zones on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 8, for drives of different versions, controllable segment areas may be designated on the disc by using the plurality of PACs. That is, it is possible to control a WO 2005/091292 = PCT/KR2004/003515 segment 0 Seg #0, and segment 1 Seg #1 via PAC #0 on the disc, a segment 0 Seg #0, segment 1 Seg #1, and segment 2 Seg #2 on the disc via PAC #1, and segment 0 Seg #0 on the disc via PAC #2.
In this example, none of the segments areas controllable by respective PACs overlap and the 5 segments areas are reordered in an ascending order starting from segment #0, which indicates that the PACs maybe independent from each other.
Moreover, even though one PAC may have a maximum of 32 segment areas, a total number of the segments managed by the plurality of PACs may also not exceed 32, even in an example where the segments are managed by a plurality of PACs.
10 Finding a position of the valid PAC zone from the PAC zone or quick finding of a position of a next writable PAC zone, while avoiding an area written already to or a defective area from above PAC zone, may affect initialization and/or recording speed of the disc. In particular, many retries may be executed to attempt to read a defective area.
In example embodiments, the present invention provides a method in which various status 15 information on positions of the plurality of valid PACs, a position of the next writable PAC, and/or other relevant information is written, for example, in a data structure, such as a Disc Definition Structure (DDS).
A DDS may be a zone containing information on a first PSN of a defect list, a position of a user data zone, sizes of spare areas, and/or other relevant information, and may be information written in the DMA zone of the disc as information in a Defect Management CA 02558895 2006-09-13 =
Structure (DMS) together with a Defect List (DFL).
The information written in the DMA may be information scanned and pre-loaded in advance when the disc is loaded into a drive. Therefore, once various status information on the PAC, such as positions of the plurality of valid PACs, a position of the next writable PAC, and/or other relevant information is written in the DDS as pointers, the optical disc drive may obtain information on the PAC zone without needing to scan all the PAC zones.
A DDS may include various kinds of information on status of the PAC zone and will be described below.
FIG, 9 illustrates a DDS on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG. 9, the DDS may include a "DDS identifier" field, a "DDS
format" field, a "First PSN of Drive Area (P DA)" field representing the first physical sector number of a drive area, a "First PSN of Defect List (P_DFL)" field representing the first PSN of the defect list, a "Location of LSN 0 of User Data Area" field representing a position of an LSN (logical sector number) of the user data area, an "Inner Spare Area 0 size (ISAO_size)"
field representing a size of an inner spare area 0, an "Outer Spare Area size (OSA
size)" field representing a size of an outer spare area 0, an "Inner Spare Area 1 size (ISA1_size)" field representing a size of an inner spare area 1, a PAC Clusters Defect Status"
field representing a defect status of the PAC zone, and/or a "PAC Allocated Space" field representing a designated status of the PAC zone.
WO 2005/091292 = PCT/KR2004/003515 Thus, an example DDS may provide various kinds of status information on the PAC, such as a position of defective cluster in the PAC zone and/or a position of clusters having valid PAC
allocated thereto by using the "PAC Clusters Defect Status" field and/or the "PAC Allocated Space" field.
A method of representing PAC status information using the "PAC Clusters Defect Status"
field and/or the "PAC Allocated Space" field will be described in more detail below.
FIG 10 illustrates a diagram showing a DDS representing a PAC status on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FIG 10, two bytes may be allocated to the "PAC Clusters Defect Status" field of the DDS, for representing a writing failure due to a cluster defect of the PAC
zone of a defective cluster area.
As shown, a PDS N (PAC Defect Status) bit in FIG. 10 is a bit for indicating the status of the PAC clusters, wherein a 0 bit may indicate the PAC cluster N is not a defective area and a I
bit may indicate the PAC cluster N is a defective area.
The PDS 0 bit may indicate a status of the PAC #0 zone, the PDS 1 bit may indicate a status of the PAC #1 zone, and so on, up to PDS 15 bit (for example, for 16) for indicating status of valid PACs, which can be allocated to one PAC zone.
Two bytes may also allocated to the "PAC Allocated Space" field of the DDS
zone, for indicating an allocation status of the PAC zone.
The PSB N (PAC Status Bit) in FIG. 10 may be a bit indicating the allocation status of the CA 02558895 2006-09-13 =
PAC clusters, wherein a 0 bit may indicate a status in which the PAC cluster N
can be newly allocated, for example, the PAC is not used or PAC-ID = 00000000 or FFFFFFFF
state and a 1 bit may indicate a status in which the PAC cluster N is allocated.
In this example, like the PDS bits, the PSB bits may be allocated from a PSB 0 bit to a PSB
15 bit, such that the PSB 0 bit indicates PAC #0 zone, PSB 1 bit indicates PAC
#1 zone, etc.
Various example embodiments in which a status of the PAC zone is represented using a DDS, for example, as described, will be discussed below.
FIGs. 11 to 13 illustrate diagrams showing various example embodiments of a DDS, each representing a PAC status on a high density optical disc in accordance with an example embodiment of the present invention.
Referring to FICA 11, the PDS 1 bit is I on a bitmap of the "PAC Clusters Defect Status" field, which is information on a defective area of the PAC zone in the information contained in the DDS. Accordingly, an optical disc drive may be made aware that the PAC #1 zone is defective based on the information.
Also, each of PSB 0, PSB 1, and PSB 2 bits is also 1 on a bitmap of the "PAC
Allocated Space" field indicating an allocation status of the PAC zone, and an optical disc drive may be made aware that the PAC #0, PAC #1, and PAC #2 zones are in allocated states based on the above information. Therefore, the next available PAC zone that is not defective area and not an allocated area, is PAC #3 zone.
Also, referring to FIG. 12, because each of the PDS 0, PDS 1, PDS 4, and PDS 5 bits is 1 on the bitmap of the "PAC Clusters Defect Status" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #4, and PAC #5 zones is a defective area, and because each the PSB 0, PSB 1, PSB 2, PSB 3, PSB 4, PSB 5, and PSB 6 bits is 1 on the bitmap of the `PAC Allocated Space" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #2, PAC #3, PAC #4, PAC #5, and PAC #6 zones is in an allocated status. Therefore, in the case of FIG 12, the next available PAC
zone is PAC #7.
Also, referring to FIG. 13, because each of the PDS 0, PDS 1, PDS 4, and PDS 5 bits is 1 on the bitmap of the "PAC Clusters Defect Status" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #4, and PAC #5 zones is a defective area, and because each of the PSB 0, PSB 1, PSB 2,, PSB 4, PSB 5, and PSB 6 bits is 1 on the bitmap of the "PAC Allocated Space" field, an optical disc drive may be made aware that each of the PAC #0, PAC #1, PAC #2, PAC #4, PAC #5, and PAC #6 zones is in an allocated status.
Therefore, in the case of FIG 13, the next available PAC zone is PAC #3, which may be an area which is presently re-usable, even if the PAC #3 area was used previously.
As set forth above, a copy of information on the PAC II zone of the INFO 2 zone, may be recorded on an area of the PAC I zone of the INFO 1 zone corresponding to an area of the PAC II zone of the INFO 2 zone. If the PAC #1 zone of the PAC II zone is defective, the PAC
I zone of the PAC #1 zone may be used (if not defective).
It is also possible that the DDS is made to include, not only the information on the 4 bytes of PAC II zone, but also information on the PAC I zone by allocating additional (for example, 4) WO 2005/091292 = PCT/KR2004/003515 bytes to the DDS. In this case, the information written on the PAC I will be free from the defective area of the PAC II zone.
FIG. 14 illustrates a diagram showing another embodiment of a DDS on a high density optical disc in accordance with another example embodiment of the present invention.
5 Referring to FIG 14, as described above, the DDS may include a "DDS
identifier" field, a "DDS format" field, a "First PSN of Drive Area (P_DA)" field, a "First PSN of Defect List (P_DFL)" field, a "Location of LSN 0 of User Data Area" field, an "Inner Spare Area 0 size (ISAO_size)" field, an "Outer Spare Area size (OSA size)" field, and an "Inner Spare Area 1 size (ISA1_size)" field, and/or a "PAC Status" field representing a status of the PAC zone.
10 The "PAC Status" field may have 8 bytes, for representing status of the PACs in the PAC II
zone of the INFO 2 zone and the PAC I zone of the INFO 1 zone, which will be described in detail below.
FIG 15 illustrates a diagram showing another embodiment of a DDS representing a PAC
status on a high density optical disc in accordance with another example embodiment of the 15 present invention.
Referring to FIG. 15, the "PAC Status" field of the DDS may use 64 bits (8 bytes) in total for representing status of PACs in PAC II zone of the INFO 2 zone and PAC I zone of the INFO
1 zone.
In this example, information in one PAC may be represented with two bits, for example, by 20 allocating bits b 1 and bO to indicate a status of the PAC #0 of the PAC I
zone, and bits b2 and = CA 02558895 2006-09-13 b3 to indicate a status of the PAC #2 of the PAC I zone, and every subsequent two bits indicating a PAC status of the PAC zone in succession. Accordingly, bits b31 and b30 may represent the PAC #15 status of the PAC I zone, bits b33 and b32 may indicate the PAC #0 status of the PAC 2 zone, and bits b63 and b62 may indicate the PAC #15 status of the PAC 2 zone.
The PAC status of the PAC zone represented with two bits may indicate that the PAC is unrecorded when the two bits are 00, the PAC is written in 00 00 00 00 bits to indicate that the PAC is writable or in FF FF FF FF bits to indicate that the PAC is re-usable even if the PAC has been used before when the two bits are 01, the PAC is a defective area FF FF FF FE
when the two bits are 10, and the PAC is a valid PAC (for example, Valid PAC =
54 53 54 00) when the two bits are 11.
Therefore, the next writable PAC zone is an area with bits 00 or bits 01, and a position of the valid PAC will be an area with bits 11.
By using the above method, the optical disc drive may obtain information on a position of the valid PAC, a position of a defective area, a next writable position, and/or other relevant information on the PACs written in the PAC 2 zone and the PAC 1 zone from the 8 bytes of "PAC Status" field inserted in the DDS zone.
FIG. 16 illustrates a DDS representing a PAC status on a high density optical disc in accordance with another example embodiment of the present invention.
If a bitmap of the 'S'AC Status" field of the DDS is the same as illustrated in FIG 16, since the b33 and b32 bits indicating the PAC #0 in the PAC II zone is 11, it is known that the PAC
#0 in the PAC II zone is a valid PAC.
Also, since the b35 and b34 bits indicating the PAC #1 in the PAC Ti zone are 10, it is known that the PAC #1 in the PAC II zone is a defective area, and since the b37 and b36 bits indicating the PAC #2 in the PAC II zone are 01, it is known that the PAC #2 in the PAC II
zone is an area used previously, or if 00, usable presently.
Accordingly, if it is intended to find the position of the valid PAC, the optical disc drive may find the PAC with the bits 11 of the "PAC Status" field information of the DDS
indicates, and when it is intended to find the position of a next writable PAC zone, the optical disc drive may find bits 01 or 00 in the "PAC Status" information.
Moreover, a back up of the PAC information in the PACE zone may be written on the PACI
zone, even though the bitmap indicating the PACE zone of the "PAC Status"
field and the bitmap indicating the PACI zone are identical, if positions of the defective areas and/or other similar areas are not identical, the two bitmaps may not be identical.
Therefore, if it is intended to read information written on the PACI zone due to an unavoidable situation, it may be necessary to refer to information indicating the PACI zone from the "PAC
Status" field information of the DDS.
Other than the example method for representing the PAC status of the PACII
zone and the PACI zone with 8 bytes in the DDS, there are also other example methods for representing only the PAC status of the PACII zone with only four bytes. This is, as described above, because information written on the PACII zone and the information written on the PACI zone is identical, and, in this instance, if it is desired to know the PAC status of the PACI zone, the PACI zone can be determined from a position of the PACII zone corresponding to the PACI
zone.
In this example, if writing of the PAC information on the PACI zone corresponding to a position of the PACII zone fails due to defective area or other similar circumstance in the PACII or PACI zone, a method of not using the area may be employed.
Information representing positions of a plurality of valid PACs with the DDS
like the example embodiments of the present invention may be favorable for a writable disc BD-RE, or R in which information is updated by successive writing.
For example, in the case of a write once high density optical disc BD-R, in which positions of the plurality of valid PACs are changed whenever writing is repeated after ejection due to the physical characteristics of the write once disk, the position information may be written on a Temporary Disc Management Area (TDMA) as a Temporary Disc Definition Structure (TDDS) information and written as DDS information at the time of completion of disc writing or disc closing, when no more writing is desired by the user.
FIG 17 illustrates a block diagram of an optical recording/reproducing apparatus in accordance with an example embodiment of the present invention.
Referring to FIG. 17, the optical recording/reproducing apparatus may include a recording/reproducing device 10 for performing recording to and/or reproduction from the optical disc, and a host, or controller 20 for controlling the recording/reproducing device 10.
In an example embodiment, the recording/reproducing device 10 may act as the "optical disc drive" discussed above in conjunction with many example embodiments of the present invention.
In an example embodiment, the host 20 gives a writing or reproduction instruction to write to or reproduce from a particular area of the optical disc to the recording/reproducing device 10, and the recording/reproducing device 10 performs the recording/reproduction to/from the particular area in response to the instruction from the host 20.
The recording/reproducing device 10 may further include an interface part 12 for performing communication, such as exchange of data and instructions with the host 20, a pickup part 11 for writing/reading a data to/from the optical disc directly, a data processor 13 for receiving a signal from the pickup part 11 and recovering a desired signal value or modulating a signal to be written into a signal able to be written on the optical disc, , a servo part 14 for controlling the pickup part 11 to read a signal from the optical disc accurately or to write a signal on the optical disc accurately, a memory 15 for temporary storage of various kinds of information including management information and data, and a microcomputer 16 for controlling various parts of the recording/reproducing device 10.
An example method for recording a PAC on a high density writable optical disc using the example optical recording/reproducing apparatus will be described below.
Upon inserting the optical disc into the optical recording/reproducing apparatus, management WO 2005/091292 = = PCT/KR2004/003515 information may be read from the optical disc and stored in the memory 15 of the recording/reproducing device 10, for use at the time of recording/reproduction of the optical disc.
In this state, if the user desires to write on a particular area of the optical disc, the host 20, 5 taking this as a writing instruction, provides information on a desired writing position to the recording/reproducing device 10, together with a data to be written.
The microcomputer 16 in the recording/reproducing device 10 may receive the writing instruction, determine if the area of the optical disc the host 20 desires to write is a defective area or not from the management information stored in the memory IS, and/or perform data 10 writing according to the writing instruction from the host 20 on an area which is not a defective area.
If it is determined that writing on an entire disc or on a particular area of the disc includes new features which a previous version of the recording/reproducing device is not provided with, leading the previous version of the recording/reproducing device to fail to sense, or if it 15 is intended to restrict functions, such as writing or reproducing to/from a particular area of the disc according to restriction set by the user, the microcomputer 16 of the recording/reproducing device 10 may write control information of the area in the PAC zone on the disc as an "Unknown PAC rule". The microcomputer 16 of the recording/reproducing device 10 may also write PAC information, such as the PAC ID for a written state, and 20 segment information which is control information on the particular area of the disc.
. .
The PAC information may be written as a plurality of valid PACs on the PAC 2 zone of the INFO 2 zone at one cluster size and the plurality of valid PACs may be written on the PACI
zone of the INFO I zone as a backup. In this example, position information of the plurality of valid PACs may be written on the DDS in the DMA of the optical disc by a method in accordance with example embodiments of the present invention.
In particular, the microcomputer 16 may provide position information on the area the data is written thereon or the PAC zone, and the data to the servo 14 and the data processor 13, so that the writing is finished at a desired position on the optical disc via the pickup part 11.
Additionally, a method for recording/reproducing the high density optical disc having PAC
information written by the above example method will be described below.
FIG. 18 illustrates a flowchart showing a method for recording /reproducing a high density optical disc having PAC recorded thereon in accordance with an example embodiment of the present invention.
Upon inserting an optical disc into the optical recording/reproducing apparatus, management information may be read from the optical disc and stored in the memory 15 of the recording and reproducing device 10, for use at the time of recording and reproduction of the optical disc.
The information in the memory 10 may include position information of various zones in the PAC zone on the disc. Particularly, positions of valid PACs in the PAC zone can be determined from the DDS information (S 10).
After positions of the valid PACs are determined, a PAC ID field of the PAC
may be examined, to verify if the PAC ID is an identified PAC_ID (S20 and S30).
If the written PAC ID is identified, the method may determine that the recording and reproducing device having written the data on the disc is identical in version to a version of the present recording and reproducing device or determine there is no separate writing/reproduction restrictions, and the recording/reproduction may be executed according to the instruction from the host 20 (S40).
If identifying a code written on the PAC-ID fails, the method may then determine if there are restrictions, such as the recording and reproducing device having written the data on the disc has a version different from a version of the present recording and reproducing device, the recording/reproduction may be executed according to the instruction from the host with reference to recording/reproduction restriction areas on the disc written on the "Unknown PAC rule" (S50).
For this, the microcomputer 16 may provide the position information and data according to the instruction of the host to the servo 14 and the data processor 13, so that the recording/reproduction is finished at a desired position on the optical disc via the pickup part 11.
As has been described, the apparatus and method for recording/reproduction to/from a high density optical disc of the present invention may have one or more of the following advantages.
First, the definition of an accessible area of a disc of a different version drive by using PACs may permit more robust protection of a data area having user data recorded thereon, for example, to prevent or reduce unauthorized access (for example, hacking).
Second, a plurality of valid PACs on the disc and/or pointers indicating positions of the PACs may permit more effective management of the PACs on the high density optical disc.
Third, apparatus and method for recording/reproducing data using PACs may permit more effective data recording/reproduction on a high density optical disc.
Industrial Applicability In the foregoing specification, the invention has been described with reference to specific embodiments thereof. However, the scope of the claims should not be limited by these preferred embodiments, but should be given the broadest interpretation consistent with the description as a whole.
Claims (34)
1. A recording medium, comprising:
at least one control data area for storing at least one access control data, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by an apparatus attempting to record/reproduce data, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule; and at least one management area for storing status information to indicate a status of the access control data stored in the control data area, wherein the status information indicates whether the access control data is valid or not.
at least one control data area for storing at least one access control data, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by an apparatus attempting to record/reproduce data, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule; and at least one management area for storing status information to indicate a status of the access control data stored in the control data area, wherein the status information indicates whether the access control data is valid or not.
2. The recording medium of claim 1, wherein the recording medium is a rewritable recording medium and the one management area is a disk definition structure (DDS).
3. The recording medium of claim 2, wherein the status information includes a status bit map.
4. The recording medium of claim 3, wherein the status bit map indicates at least validity of the access control data in the control data area.
5. The recording medium of claim 3, wherein the status bit map indicates whether the access control data is unrecorded, usable or reusable, defective, or valid.
6. The recording medium of any one of claims 1 to 5, wherein the status information includes defect status information and/or allocation status information on the access control data.
7. The recording medium of claim 6, wherein the defect status information indicates whether the access control data in the control data area is defective or not.
8. The recording medium of claim 6, wherein the allocation status information indicates whether the access control data is allocated to the control data area or not.
9. The recording medium of claim 6, wherein the allocation status information indicates whether the access control data is newly allocable to the control data area or not.
10. The recording medium of any one of claims 1 to 9, wherein the status information is represented by at least one bit.
11. The recording medium of claim 1, wherein the recording medium is a write once recording medium and the at least one management area is a temporary disk definition structure (TDDS).
12. The recording medium of claim 1, wherein the status information indicates whether the access control data is valid, defective, allocated, newly allocable, or available for use.
13. The recording medium of any one of claims 1 to 12, wherein the at least one control data area is in an information zone of a lead-in zone of the recording medium.
14. The recording medium of any one of claims 1 to 13, wherein the control data area includes two control data zones, one of them includes backup copies of the access control data.
15. The recording medium of claim 14, wherein the two control data zones are respectively recorded in different information zones of a lead-in zone of the recording medium.
16. The recording medium of any one of claims 1 to 15, wherein the at least one control data area includes a header, common to the at least one control data area, and a specific information area, including information specific to the at least one control data area.
17. The recording medium of any one of claims 1 to 16, wherein the predetermined rules are used when a version/type of the access control data is not identified by a recording/reproducing apparatus.
18. The recording medium of claim 17, wherein the predetermined rules control an access to the recording medium to record/reproduce user data on/from the recording medium.
19. The recording medium of claim 18, wherein the predetermined rules include control information to control recording/reproducing the user data.
20. The recording medium of any one of claims 1 to 19, further comprising:
a backup area storing a copy of the access control information, wherein the control data area and the backup area are located in an inner area of the recording medium.
a backup area storing a copy of the access control information, wherein the control data area and the backup area are located in an inner area of the recording medium.
21. The recording medium of any one of claims 1 to 20, wherein the access control data further includes type information indicates whether the corresponding access control data is available for re-use.
22. A method of recording data/information on a recording medium, comprising:
recording at least one access control data, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by an apparatus attempting to record/reproduce data, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule; and recording status information for indicating a status of the access control data, the status information indicating at least validity of the access control data.
recording at least one access control data, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by an apparatus attempting to record/reproduce data, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule; and recording status information for indicating a status of the access control data, the status information indicating at least validity of the access control data.
23. The method of claim 22, wherein the status information includes whether the access control data is defective.
24. The method of claim 22 or 23, wherein the access is controlled by the predetermined rule when a version/type of the access control data is not identified.
25. The method of any one of claims 22 to 24, further comprising:
recording a copy of the access control information in a backup area of the recording medium, wherein the control data area and the backup area are located in an inner area of the recording medium.
recording a copy of the access control information in a backup area of the recording medium, wherein the control data area and the backup area are located in an inner area of the recording medium.
26. A method of reproducing data from a recording medium, comprising:
reading status information for indicating a status of at least one access control data recorded on the recording medium, the status information indicating at least a validity of the access control data; and reading the at least one access control data based on the status information, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by an apparatus attempting to record/reproduce data, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule.
reading status information for indicating a status of at least one access control data recorded on the recording medium, the status information indicating at least a validity of the access control data; and reading the at least one access control data based on the status information, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by an apparatus attempting to record/reproduce data, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule.
27. The method of claim 26, further comprising:
accessing to the recording medium based on the predetermined rule included in the access control data in order to record/reproduce user data on/from the recording medium when a version/type of the access control data is not identified.
accessing to the recording medium based on the predetermined rule included in the access control data in order to record/reproduce user data on/from the recording medium when a version/type of the access control data is not identified.
28. An apparatus for recording/reproducing data on/from a recording medium, comprising:
an optical device configured to record data on the recording medium or reproduce data from the recording medium; and a control unit configured to control the optical device to access to the recording medium based on at least one access control data and status information, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by the control unit, the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule, the status information indicating at least validity of the access control data.
an optical device configured to record data on the recording medium or reproduce data from the recording medium; and a control unit configured to control the optical device to access to the recording medium based on at least one access control data and status information, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by the control unit, the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule, the status information indicating at least validity of the access control data.
29. The apparatus of claim 28, wherein the status information includes whether the access control data is defective.
30. The apparatus of claim 28 or 29, further comprising a host device to generate a command for recording/reproducing the data to the control unit.
31. The apparatus of any one of claims 28 to 30, wherein the control unit is configured to control the optical device to access to the recording medium based on the predetermined rule in the access control data in order to record/reproduce user data on/from the recording medium when the control unit cannot identify a version/type of the access control data.
32. The apparatus of any one of claims 28 to 31, wherein the control unit is further configured to control the optical device to record a copy of the access control information in a backup area of the recording medium, wherein the control data area and the backup area are located in an inner area of the recording medium.
33. An apparatus for recording/reproducing data on/from a recording medium, comprising:
an optical device configured to record/reproduce data on/from the recording medium; and a control unit operably connected with the optical device and configured to control the optical device to record at least one access control data in the recording medium, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by the control unit, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule, and the control unit configured to control the optical device to record status information in the recording medium, the status information indicating a status of the recorded access control data, wherein the status information indicates whether the recorded access control data is valid or not.
an optical device configured to record/reproduce data on/from the recording medium; and a control unit operably connected with the optical device and configured to control the optical device to record at least one access control data in the recording medium, the access control data including a predetermined rule for specifying one or more operations being required when the access control data is not identified by the control unit, and the access control data managing an access to the recording medium and enlarging a compatibility of the recording medium by controlling the access according to the predetermined rule, and the control unit configured to control the optical device to record status information in the recording medium, the status information indicating a status of the recorded access control data, wherein the status information indicates whether the recorded access control data is valid or not.
34. The apparatus of claim 33, wherein the control unit is further configured to control the optical device to record a copy of the access control information in a backup area of the recording medium, wherein the control data area and the backup area are located in an inner area of the recording medium.
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| PCT/KR2004/003515 WO2005091292A1 (en) | 2004-03-19 | 2004-12-30 | Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
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Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4666696B2 (en) * | 1996-11-18 | 2011-04-06 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Writing device, record carrier, information block writing method, and information block reading device |
| US7739381B2 (en) | 1998-03-11 | 2010-06-15 | Commvault Systems, Inc. | System and method for providing encryption in storage operations in a storage network, such as for use by application service providers that provide data storage services |
| CA2499073C (en) | 2002-09-16 | 2013-07-23 | Commvault Systems, Inc. | Combined stream auxiliary copy system and method |
| US7869315B2 (en) * | 2003-02-28 | 2011-01-11 | Samsung Electronics Co., Ltd. | Write-once optical disc having update area and access area |
| US7710853B2 (en) * | 2004-03-18 | 2010-05-04 | Lg Electronics, Inc. | Recording medium with segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| JP4610607B2 (en) | 2004-03-18 | 2011-01-12 | エルジー エレクトロニクス インコーポレイティド | Method and apparatus for recording / reproducing data on / from a recording medium |
| US7480764B2 (en) * | 2004-03-18 | 2009-01-20 | Lg Electronics, Inc. | Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| US7970988B2 (en) * | 2004-03-19 | 2011-06-28 | Lg Electronics Inc. | Recording medium with status information thereon which changes upon reformatting and apparatus and methods for forming, recording, and reproducing the recording medium |
| CA2558895C (en) | 2004-03-19 | 2012-08-07 | Lg Electronics Inc. | Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| TW200603083A (en) * | 2004-03-23 | 2006-01-16 | Matsushita Electric Ind Co Ltd | Recording apparatus, reproducing apparatus, host apparatus, drive apparatus, reocrding method, reproducing method, program, and information recording medium |
| KR100619016B1 (en) * | 2004-05-06 | 2006-08-31 | 삼성전자주식회사 | Optical recording medium, recording/reproducing apparatus and host apparatus |
| US7916582B2 (en) | 2004-05-11 | 2011-03-29 | Samsung Electronics Co., Ltd. | Optical recording medium, recording/reproducing apparatus and method, initialization method, and reinitialization method |
| US7663990B2 (en) * | 2004-05-21 | 2010-02-16 | Samsung Electronics Co., Ltd. | Optical recording medium having access control area and method for recording or reproducing thereof |
| EP1600965A3 (en) * | 2004-05-25 | 2006-04-19 | Nec Corporation | Optical disc recording system |
| KR100619023B1 (en) * | 2004-05-25 | 2006-08-31 | 삼성전자주식회사 | Optical Recording medium, recording/reproducing method and recording/reproducing apparatus |
| US7818783B2 (en) | 2006-03-08 | 2010-10-19 | Davis Russell J | System and method for global access control |
| JP2008047212A (en) * | 2006-08-15 | 2008-02-28 | Nec Corp | Information recording medium, its recording method, and information recording and reproducing device |
| US8655914B2 (en) | 2006-10-17 | 2014-02-18 | Commvault Systems, Inc. | System and method for storage operation access security |
| US20080288310A1 (en) * | 2007-05-16 | 2008-11-20 | Cvon Innovation Services Oy | Methodologies and systems for mobile marketing and advertising |
| US8434131B2 (en) | 2009-03-20 | 2013-04-30 | Commvault Systems, Inc. | Managing connections in a data storage system |
| US9904481B2 (en) | 2015-01-23 | 2018-02-27 | Commvault Systems, Inc. | Scalable auxiliary copy processing in a storage management system using media agent resources |
| US9898213B2 (en) | 2015-01-23 | 2018-02-20 | Commvault Systems, Inc. | Scalable auxiliary copy processing using media agent resources |
| US11010261B2 (en) | 2017-03-31 | 2021-05-18 | Commvault Systems, Inc. | Dynamically allocating streams during restoration of data |
Family Cites Families (112)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US723893A (en) * | 1901-07-11 | 1903-03-31 | Sophie Meyer | Corset. |
| JPH0279266A (en) * | 1988-09-16 | 1990-03-19 | Hitachi Ltd | Magnetic disk device and its control system |
| JPH0428061A (en) * | 1990-05-24 | 1992-01-30 | Matsushita Electric Ind Co Ltd | Information recording medium and information recording and reproducing device |
| JP2616586B2 (en) | 1991-01-16 | 1997-06-04 | 松下電器産業株式会社 | Magnetic disk and magnetic disk device |
| US5448728A (en) * | 1991-08-08 | 1995-09-05 | Sharp Kabushiki Kaisha | Storage medium control system for controlling a write-once read-many storage medium |
| WO1993006695A1 (en) * | 1991-09-23 | 1993-04-01 | Z-Microsystems | Enhanced security system for computing devices |
| JPH05342817A (en) * | 1992-06-10 | 1993-12-24 | Canon Inc | File management method and information recording and reproducing device |
| JP3471347B2 (en) | 1992-10-05 | 2003-12-02 | 三菱電機株式会社 | Optical disk and optical disk drive |
| US5815485A (en) | 1993-02-02 | 1998-09-29 | Matsushita Electric Industrial Co., Ltd. | Recording medium, a method for producing the same, a control method using the recording medium, and a recording/reproducing apparatus using the recording medium |
| JPH06259886A (en) * | 1993-03-09 | 1994-09-16 | Sony Corp | Magneto-optical disk and recording and reproducing device for magneto-optical disk |
| JPH0729177A (en) | 1993-07-15 | 1995-01-31 | Mitsubishi Electric Corp | Defect management method of optical disk as well as optical disk recording apparatus and optical disk reproduction apparatus |
| JPH07121993A (en) * | 1993-10-21 | 1995-05-12 | Ricoh Co Ltd | Optical information recorder/reproducer |
| US5386402A (en) * | 1993-11-29 | 1995-01-31 | Kabushiki Kaisha Toshiba | Access control apparatus and address translation method for disk storage device |
| JPH07200182A (en) | 1993-12-28 | 1995-08-04 | Oki Electric Ind Co Ltd | Information processor |
| AU3606795A (en) * | 1994-09-13 | 1996-03-29 | Irmgard Rost | Personal data archive system |
| EP0845780A4 (en) | 1995-08-18 | 1999-06-09 | Matsushita Electric Ind Co Ltd | Information recording/reproducing device and information recording/reproducing medium |
| JP3552223B2 (en) | 1996-02-05 | 2004-08-11 | ソニー株式会社 | Optical recording method |
| JP3997558B2 (en) * | 1996-09-12 | 2007-10-24 | ソニー株式会社 | Recording or reproducing apparatus and recording or reproducing method |
| US6351788B1 (en) * | 1996-10-30 | 2002-02-26 | Hitachi, Ltd. | Data processor and data processing system |
| US6009058A (en) * | 1997-05-13 | 1999-12-28 | Hewlett-Packard Company | Method of reducing formatting time for rewritable compact disks by pre-formatting less than the entire standard logical format |
| JPH1139801A (en) | 1997-07-14 | 1999-02-12 | Olympus Optical Co Ltd | Method for recording information |
| JPH1166751A (en) | 1997-08-18 | 1999-03-09 | Ricoh Co Ltd | Information recording and reproducing device |
| SG129225A1 (en) * | 1998-04-20 | 2007-02-26 | Samsung Electronics Co Ltd | Optical data storage medium |
| KR100601598B1 (en) | 1998-06-15 | 2006-07-14 | 삼성전자주식회사 | Recording medium storing write protection information and write protecting method |
| US6765853B1 (en) * | 1998-06-15 | 2004-07-20 | Samsung Electronics Co., Ltd. | Recording medium for storing write protection information and write protection method thereof |
| RU2225043C1 (en) | 1998-06-15 | 2004-02-27 | Самсунг Электроникс Ко., Лтд. | Memory device (alternatives) |
| US6223303B1 (en) | 1998-06-29 | 2001-04-24 | Western Digital Corporation | Disk drive having two tiered defect list comprising marginal and reserved data sectors |
| KR100437756B1 (en) * | 1998-07-14 | 2004-09-08 | 엘지전자 주식회사 | Method for managing defect area of optical recording medium |
| CA2244626A1 (en) | 1998-07-31 | 2000-01-31 | Kom Inc. | A hardware and software system |
| EP1120787A4 (en) * | 1998-09-18 | 2008-08-27 | Toshiba Kk | Information recording method, information recording device, and information recording medium |
| CZ301303B6 (en) * | 1998-10-05 | 2010-01-06 | Koninklijke Philips Electronics N. V. | Information carrier, record player and recording device for carrier and method for information recording |
| JP2000195178A (en) * | 1998-10-22 | 2000-07-14 | Matsushita Electric Ind Co Ltd | Information recording medium, and method and device for managing defects |
| MXPA01003953A (en) | 1998-10-22 | 2003-03-10 | Matsushita Electric Ind Co Ltd | Information recording medium, and method and apparatus for managing defect thereof. |
| KR100459162B1 (en) | 1999-01-23 | 2004-12-03 | 엘지전자 주식회사 | Optical recording medium and method for formatting of the same |
| US6842580B1 (en) | 1999-01-27 | 2005-01-11 | Matsushita Electric Industrial Co., Ltd. | Real-time recording/reproduction on an information recording medium including a defective region |
| RU2208844C2 (en) | 1999-02-10 | 2003-07-20 | Самсунг Электроникс Ко., Лтд. | Record medium incorporating backup domain for controlling faults and fault control data; backup domain allocation process ,and fault control process |
| JP4116740B2 (en) | 1999-03-08 | 2008-07-09 | 松下電器産業株式会社 | Information recording medium, information recording method, information recording apparatus, and information reproducing apparatus |
| PE20010060A1 (en) | 1999-03-18 | 2001-02-22 | Procter & Gamble | LIQUID SCENTED COMPOSITIONS FOR HOME CLEANING, FABRIC TREATMENT AND DEODORIZATION PACKAGED IN POLYETHYLENE BOTTLES MODIFIED TO PRESERVE THE INTEGRITY OF THE PERFUME |
| JP3478159B2 (en) * | 1999-03-29 | 2003-12-15 | ヤマハ株式会社 | Disc information acquisition method, access control method, recording control method, and optical disc recording device for optical disc |
| JP3758886B2 (en) | 1999-03-30 | 2006-03-22 | 富士通株式会社 | Data processing apparatus and access control method thereof |
| US6330210B1 (en) * | 1999-04-29 | 2001-12-11 | Hewlett-Packard Company | Data structure for control information on rewriteable data storage media |
| JP2001006294A (en) * | 1999-06-17 | 2001-01-12 | Matsushita Electric Ind Co Ltd | Real time data recording system and device therefor |
| IL141643A0 (en) | 1999-06-29 | 2002-03-10 | Koninkl Philips Electronics Nv | Data allocation in dvd recording |
| US6631359B1 (en) | 1999-09-10 | 2003-10-07 | Dphi Acquisitions, Inc. | Writeable medium access control using a medium writeable area |
| JP5095895B2 (en) | 1999-09-23 | 2012-12-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method for immediately writing or reading a file on a disk-shaped recording medium |
| JP2001126407A (en) * | 1999-10-27 | 2001-05-11 | Sony Corp | Method and device for managing information |
| KR100647368B1 (en) | 2000-01-26 | 2006-11-17 | 엘지전자 주식회사 | Method for formatting of the optical disc |
| JP4277452B2 (en) * | 2000-02-25 | 2009-06-10 | ソニー株式会社 | Recording device, playback device |
| US6785839B2 (en) | 2000-04-08 | 2004-08-31 | Samsung Electronics, Co., Ltd. | Method of verifying defect management area information of disc and test apparatus for performing the same |
| JP3835977B2 (en) | 2000-04-25 | 2006-10-18 | 富士通株式会社 | Disc type recording medium format processing method, disc type recording medium, and information recording / reproducing apparatus using the same |
| US6691209B1 (en) | 2000-05-26 | 2004-02-10 | Emc Corporation | Topological data categorization and formatting for a mass storage system |
| JP2001351334A (en) | 2000-06-08 | 2001-12-21 | Sony Corp | Optical recording medium and data recorder-reproducer performing data recording-reproducing with respect to the recording medium |
| JP3869363B2 (en) | 2000-07-21 | 2007-01-17 | 富士通株式会社 | Optical disc apparatus, optical disc formatting method, and optical disc |
| JP3898430B2 (en) | 2000-09-18 | 2007-03-28 | 株式会社日立製作所 | Optical recording apparatus and optical disk used therefor |
| JP3927388B2 (en) | 2000-09-27 | 2007-06-06 | 株式会社リコー | Image processing apparatus, image processing method, and recording medium |
| JP2002124037A (en) | 2000-10-11 | 2002-04-26 | Hitachi Ltd | Disk unit and initialization format forming method |
| CN1474994A (en) * | 2000-11-17 | 2004-02-11 | �Ÿ���˹ | Applications for mobile digital camera, that distinguish between text and imag-information in an image |
| JP2002175668A (en) | 2000-12-06 | 2002-06-21 | Sony Corp | Defect information management method and recording medium processing device |
| CN1877724B (en) | 2000-12-22 | 2011-05-18 | 松下电器产业株式会社 | Replaying method for optical disc |
| JP2002238015A (en) * | 2001-02-09 | 2002-08-23 | Toshiba Corp | Electronic device and data write method |
| US7228342B2 (en) | 2001-02-20 | 2007-06-05 | Sony Computer Entertainment America Inc. | System for utilizing an incentive point system based on disc and user identification |
| JP2002288937A (en) * | 2001-03-22 | 2002-10-04 | Toshiba Corp | Information recording medium, information recorder, information recording method, information reproducing device and information reproducing method |
| JP3971117B2 (en) * | 2001-03-22 | 2007-09-05 | 株式会社東芝 | Information recording medium, information recording apparatus, information recording method, information reproducing apparatus, and information reproducing method |
| JP2002278821A (en) | 2001-03-22 | 2002-09-27 | Sharp Corp | System and method for managing data and program for providing computer with data managing system |
| US7023775B2 (en) * | 2001-03-22 | 2006-04-04 | Matsushita Electric Industrial Co., Ltd. | Recording apparatus and method, and reproduction apparatus and method for recording data to or reproducing data from a write once type information recording medium, and write once type information recording medium |
| JP3461340B2 (en) | 2001-04-17 | 2003-10-27 | 株式会社東芝 | Information recording method |
| JP2002328848A (en) | 2001-04-27 | 2002-11-15 | Matsushita Electric Ind Co Ltd | Recording/reproducing device, data access control method of recording/reproducing device and recording medium in which data access control method is recorded |
| CN1311462C (en) | 2001-08-02 | 2007-04-18 | 松下电器产业株式会社 | Information recording medium, information recording method and apparatus , information reproduction method and apparatus thereof |
| JP4474813B2 (en) | 2001-08-20 | 2010-06-09 | ヤマハ株式会社 | Optical disc recording method |
| JP2008052289A (en) | 2001-09-07 | 2008-03-06 | Semiconductor Energy Lab Co Ltd | Light emitting device and electronic apparatus |
| JP4576116B2 (en) * | 2001-10-02 | 2010-11-04 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method and apparatus for recording a digital information signal |
| JP4149167B2 (en) * | 2002-01-11 | 2008-09-10 | パイオニア株式会社 | Information recording apparatus and method, information reproducing apparatus and method, information recording program and information reproducing program, recording medium, and information recording medium |
| JP4100913B2 (en) * | 2002-01-15 | 2008-06-11 | 株式会社リコー | Information reproduction apparatus, data management information acquisition method, data management information acquisition program, storage medium, and reproduction system |
| US7123556B2 (en) | 2002-01-22 | 2006-10-17 | Matsushita Electric Industrial Co., Ltd. | Multi-layered information recording medium with spare defect management areas |
| JP3788615B2 (en) | 2002-01-22 | 2006-06-21 | 松下電器産業株式会社 | Multilayer information recording medium, reproducing apparatus, recording apparatus, reproducing method and recording method |
| JP4101666B2 (en) | 2002-01-22 | 2008-06-18 | 松下電器産業株式会社 | Information recording medium, recording apparatus, reproducing apparatus, recording method, reproducing method |
| JP2003228835A (en) | 2002-02-05 | 2003-08-15 | Matsushita Electric Ind Co Ltd | Optical disk unit |
| JP2003242650A (en) | 2002-02-13 | 2003-08-29 | Ricoh Co Ltd | Cd-r/rw disk, cd-r/rw drive device and program |
| JP2003346426A (en) | 2002-05-28 | 2003-12-05 | Sony Corp | Optical disk device, optical disk recording method, program for the optical disk recording method, and recording medium on which the optical disk recording method is recorded |
| JP2004005842A (en) * | 2002-05-31 | 2004-01-08 | Ricoh Co Ltd | Recording method, record medium, program and information recording medium, and information recording device |
| KR100881665B1 (en) | 2002-05-31 | 2009-02-06 | 삼성전자주식회사 | Optical information storage medium having plural information recording layer and method of recording/reproducing in the same |
| KR20030094855A (en) | 2002-06-08 | 2003-12-18 | 엘지전자 주식회사 | High density multi layer optical disc and method for managing a layer formatting |
| JP2004014088A (en) * | 2002-06-11 | 2004-01-15 | Sony Corp | Disk recording medium, recording method and disk drive system |
| EP1516332A4 (en) | 2002-06-24 | 2009-07-22 | Lg Electronics Inc | Recording medium having data structure for managing reproduction of multiple title video data recorded thereon and recording and reproducing methods and apparatuses |
| JP2004030779A (en) | 2002-06-26 | 2004-01-29 | Toshiba Corp | Recording device, recording method, reproducing device and reproducing method |
| JP2004039076A (en) | 2002-07-02 | 2004-02-05 | Toshiba Corp | Information storage medium, information recording device, and information recording method |
| TWI228250B (en) | 2002-07-18 | 2005-02-21 | Mediatek Inc | Method for defect management of optical disk |
| TWI294622B (en) * | 2002-08-12 | 2008-03-11 | Samsung Electronics Co Ltd | Disc with tdds and tdfl, and method and apparatus for managing defect in the same |
| US7489620B2 (en) | 2002-08-21 | 2009-02-10 | Nec Corporation | Optical information recording and reproducing medium |
| KR100891107B1 (en) | 2002-09-10 | 2009-03-30 | 삼성전자주식회사 | Method and apparatus for managing defect on disc |
| KR100667749B1 (en) | 2002-10-18 | 2007-01-11 | 삼성전자주식회사 | Method and apparatus for managing defect using temporary DFL and temporary DDS, and disc thereof |
| TWI335587B (en) * | 2003-02-21 | 2011-01-01 | Lg Electronics Inc | Write-once optical recording medium and defect management information management method thereof |
| US7385889B2 (en) | 2003-03-03 | 2008-06-10 | Samsung Electronics Co., Ltd. | Method and apparatus for managing disc defect using temporary DFL and temporary DDS including drive and disc information disc with temporary DFL and temporary DDS |
| AU2003282449A1 (en) * | 2003-03-04 | 2004-09-28 | Lg Electronics Inc. | Method for recording on optical recording medium and apparatus using the same |
| SG151111A1 (en) * | 2003-03-08 | 2009-04-30 | Samsung Electronics Co Ltd | An apparatus for reproducing and/or recording from and/or to a recording medium |
| JP4026518B2 (en) * | 2003-03-12 | 2007-12-26 | ソニー株式会社 | Recording medium, recording apparatus, and recording method |
| JP4026517B2 (en) | 2003-03-12 | 2007-12-26 | ソニー株式会社 | Recording medium, recording apparatus, and recording method |
| JP3712726B2 (en) | 2003-03-17 | 2005-11-02 | パイオニア株式会社 | Write-once recording medium, recording apparatus and recording method for write-once recording medium, and playback apparatus and playback method for write-once recording medium |
| JP4100208B2 (en) * | 2003-03-20 | 2008-06-11 | 株式会社日立製作所 | Disk management information authentication method and disk device |
| KR100739681B1 (en) | 2003-03-24 | 2007-07-13 | 삼성전자주식회사 | Method of overwriting in write-once information storage medium |
| KR100739674B1 (en) | 2003-05-01 | 2007-07-13 | 삼성전자주식회사 | Apparatus and method for managing defect and a disc thereof |
| EP1627386A1 (en) * | 2003-05-09 | 2006-02-22 | Koninklijke Philips Electronics N.V. | Method for formatting an optical disc |
| CA2531572C (en) | 2003-07-08 | 2013-01-15 | Matsushita Electric Industrial Co., Ltd. | Write-once recording medium, recording method, recording apparatus, reproduction method, and reproduction apparatus |
| JP4703959B2 (en) * | 2003-12-03 | 2011-06-15 | 株式会社日立製作所 | Storage device system and replication creation method thereof |
| US7710853B2 (en) * | 2004-03-18 | 2010-05-04 | Lg Electronics, Inc. | Recording medium with segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| JP4610607B2 (en) * | 2004-03-18 | 2011-01-12 | エルジー エレクトロニクス インコーポレイティド | Method and apparatus for recording / reproducing data on / from a recording medium |
| US7480764B2 (en) * | 2004-03-18 | 2009-01-20 | Lg Electronics, Inc. | Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| EP1887577B1 (en) | 2004-03-19 | 2013-12-18 | LG Electronics Inc. | Recording medium with physical access control (PAC) cluster thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| CA2558895C (en) | 2004-03-19 | 2012-08-07 | Lg Electronics Inc. | Recording medium with physical access control (pac) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium |
| WO2005089077A2 (en) * | 2004-03-23 | 2005-09-29 | Lg Electronics Inc. | Recording medium, and method and apparatus for recording and reproducing data on/from recording medium |
| KR100677120B1 (en) | 2004-05-11 | 2007-02-02 | 삼성전자주식회사 | Optical recording medium, recording/reproducing apparatus, recording/reproducing method, initializing method and re-initializing method |
| US7663990B2 (en) * | 2004-05-21 | 2010-02-16 | Samsung Electronics Co., Ltd. | Optical recording medium having access control area and method for recording or reproducing thereof |
-
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- 2004-12-30 BR BRPI0418667-2A patent/BRPI0418667A/en not_active Application Discontinuation
- 2004-12-30 WO PCT/KR2004/003515 patent/WO2005091292A1/en active Application Filing
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