WO2005008657A1 - 追記型記録媒体、追記型記録媒体用の記録装置及び記録方法、追記型記録媒体用の再生装置及び再生方法、記録又は再生制御用のコンピュータプログラム、並びにデータ構造 - Google Patents
追記型記録媒体、追記型記録媒体用の記録装置及び記録方法、追記型記録媒体用の再生装置及び再生方法、記録又は再生制御用のコンピュータプログラム、並びにデータ構造 Download PDFInfo
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- WO2005008657A1 WO2005008657A1 PCT/JP2004/010768 JP2004010768W WO2005008657A1 WO 2005008657 A1 WO2005008657 A1 WO 2005008657A1 JP 2004010768 W JP2004010768 W JP 2004010768W WO 2005008657 A1 WO2005008657 A1 WO 2005008657A1
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- recording
- data
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- recorded
- management information
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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
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1883—Methods for assignment of alternate areas for defective areas
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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
- G11B20/10—Digital recording or reproducing
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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
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
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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
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
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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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
- G11B7/00375—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs arrangements for detection of physical defects, e.g. of recording layer
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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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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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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
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
- G11B2020/1826—Testing wherein a defect list or error map is generated
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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
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B2020/1873—Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
Definitions
- the present invention relates to a write-once type recording medium, a recording apparatus and a recording method for recording recording data on a write-once type recording medium, a reproducing apparatus for reproducing the record data recorded on the write-once type recording medium, a reproducing method, and recording or reproduction control.
- Computer program as well as the technical field of data structures. Background art
- a diffect list is created for diffect management.
- the direct list includes address information indicating the position of the diff existing on the recording medium, and data of the spare area in which the data that should have been recorded or the recorded data has been evacuated in the place where the differential exists. Address information indicating a location (for example, a recording position in a spare area) is recorded.
- the creation of a differential list is performed when a recording medium is initialized or formatted. Also, the creation of the differential list is This is also performed when data is recorded on the recording medium. When recording and rewriting of recording data are performed several times, each time recording and rewriting of recording data is performed, a differential list is created or updated.
- a differential list is referred to.
- the recording data can be recorded on the recording medium while avoiding the place where the differential exists.
- the data list is also referred to. This makes it possible to reliably read the recording data recorded in the normal recording area and the recording data recorded in the spare area due to the presence of the differential based on the differential list.
- the differential list is generally recorded in a specific area of the recording medium on which the differential list was created or updated. Then, the differential list is read from the recording medium the next time the recorded data recorded on the recording medium is reproduced, or when the recorded data is rewritten or added to the recording medium, and is read by the reading device. It is referred to at the time of reading work or at the time of reproduction work by the reproduction device. Disclosure of the invention
- the direct list is recorded in a specific area of the recording medium.
- the differential list is a predetermined area secured in a read-only or read-only area on the disk (hereinafter, these are referred to as “differential”, respectively). This area is referred to as the “management area”.) Then, the recording data that should be recorded in the place where the differential exists is also recorded in a specific area of the recording medium.
- the differential list is updated each time the recording data is recorded or rewritten. Then, each time the direct list is updated by recording / rewriting of the recording data, it is overwritten in the differential management area of the recording medium to be recorded / rewritten. In addition, the record data that should be recorded in the place where the differential exists is also overwritten or added to a specific area of the recording medium.
- the update recording of the target list by rewriting the differential list in this way can be realized only when the recording medium is rewritable.
- the recording medium is a so-called write-once recording medium, for example, a write-once optical disc, for example, each time the diff list is updated, the updated diff list is stored in the write-once recording medium. Added to new area of record.
- the present invention has been made in view of the above-described problems.
- a write-once type recording system capable of appropriately performing differential management while efficiently and maximally using the recording capacity of a recording medium.
- Medium, recording apparatus and recording method for recording recording data on write-once recording medium, reproduction apparatus and reproduction method for reproducing recording data recorded on the write-once recording medium, used for the recording apparatus or reproduction apparatus It is an object to provide a computer program and a data structure.
- a write-once recording medium is a write-once recording medium on which recording data can be recorded only once, and has a data area for recording the recording data, and a data area where a differential exists in the data area.
- Record data to be or recorded A shared area for temporarily recording evacuation data as data and diff management information including an evacuation source address and an evacuation destination address of the evacuation data.
- the evacuation data is recorded starting from a predetermined point existing in the common area, and the diff management is performed starting from another predetermined point existing at a position different from the one point. Information is recorded.
- the data is mainly data to be reproduced or executed, and includes, for example, a series of contents such as image data, audio data, document data, content data, and a computer program.
- Recording data can be recorded in the data area.
- information indicating the attribute and type of the write-once recording medium according to the present invention information for managing the address of the recording data, and information for controlling the recording operation and the reading operation of the drive device are controlled.
- the information recording area it is possible to appropriately execute recording and reproduction of the recording data recorded in the data area. Note that the recorded data and the control information cannot always be clearly distinguished according to their contents.
- control information is mainly used directly for controlling the operation of the drive device
- recorded data is mainly data that is simply recorded and read in the drive device, and is mainly used as a pack. This data is used in data reproduction processing or program execution processing of the end or host computer.
- the differential management information of the data area is temporarily recorded, and the recording data should have been originally recorded in the place where the diff exists, or the recording data had been recorded in that place. Save data is recorded.
- the “diffect management information” in the present invention is information used for the differential management, and the evacuation source address which is the address of the place where the differential exists in the data area and the existence of the diff
- the evacuation destination address which is the address of the evacuation data recording location, which is the recording data originally recorded or recorded at the location where the evacuation is performed.
- the term "defective management” means that when there is a defect such as a scratch, dust or deterioration in or on the write-once recording medium according to the present invention, the recording data is recorded while avoiding the place where the differential exists.
- Evacuation When recording data recorded on a write-once type recording medium, the position of the diff is recognized, and the saved data is recorded in the common area. The process of reading from the data is also performed as part of the differential management.
- the common area is an area for recording the differential management information until the write-once recording medium according to the present invention is finalized, for example. Therefore, for example, when the write-once recording medium is reproduced before finalization, the difference management is performed by reading the difference management information from the common area.
- save data is recorded in the shared area together with the defect management information in addition to the defect management information.
- evacuation data is recorded starting from one point in the common area
- differential management information is recorded starting from another point. That is, in the common area, a recording area for diff management information, which is a pseudo area or a virtual area around one point, and a recording area for evacuation data, which is a peripheral area around another point, are provided. .
- there is no recording area for diff management information and recording area for save data in the common area and each can be recorded as long as they do not exceed the limit of the common area.
- a write-once recording medium for example, a disc management area and a spare area
- a recording area for the directory management information and a recording area for the save data clearly separated from each other.
- a write-once recording medium having two separate recording areas for example, a diff management area for recording diff management information and a spare area for recording evacuation data
- the differential management cannot be performed thereafter. That is, even if there is an empty area in one of the recording areas, the recording data cannot be recorded on the write-once recording medium when the empty area is exhausted in one of the recording areas. Inconvenience occurs.
- the write-once recording medium of the present invention such two recording areas are clearly defined. Since it is not provided, the inconvenience as described above does not occur. In other words, in the common area, both the diff management information and the evacuation data can be recorded starting from one point or another point, so that either one cannot be recorded first. Does not occur. Therefore, if there is an empty area in the common area, the direct management can be performed appropriately, and as a result, the recording data can be further recorded.
- the write-once recording medium according to the present invention is extremely excellent and has a large size. It can be said that it has advantages.
- the write-once type recording medium reads the record data recorded in the user data area while reading the diff management information by the operation of the reproducing device described later. Then, it is possible to play back a series of contents by playing back the evacuation data from the common area based on the differential management information. In addition, even during playback, it is possible to play back recorded data appropriately while discovering the differential and updating the differential management information sequentially.
- a write-once-type recording medium of the present invention a write-once-type recording medium capable of managing the differential is realized. Especially, in the common area, diff management information And save data, respectively, to efficiently and maximally utilize the recording capacity of the common area (or the write-once recording medium) to perform recording and reproduction of recorded data while performing the diff management.
- one point and another point may be configured to exist one by one in the write-once recording medium according to the present invention, or may be configured to exist in plural. May be.
- the evacuation data is continuously recorded starting from the one point, and the differential management information is started from the other point. Recorded continuously.
- the evacuation data and the differential management information are continuously recorded, so that the evacuation data is recorded in an area centered on one point.
- diff management information is recorded in an area centered on other points. Therefore, it is possible to roughly distinguish saved data corresponding to the entity information and differential management information corresponding to the control information in the common area.
- the one point corresponds to one end point in the common area
- the other point is another end point facing the one end point in the common area. It corresponds to an end point.
- the areas where the save data and the differential management information are recorded can be clearly distinguished in the common area.
- one end point corresponds to, for example, the outer peripheral side of the common area (more preferably, a point located at the outermost periphery), and the other end point corresponds to, for example, the common area. It may be configured to correspond to the inner circumference side (more preferably, the point corresponding to the innermost circumference).
- the differential management information is recorded on the inner side of the common area, and the evacuation data is recorded on the outer side.
- each of the save data and the differential management information is repeatedly recorded a plurality of times.
- the same content of the differential management information is repeatedly recorded a plurality of times (for example, twice) in the common area by one recording operation, for example, arranged in a redundant manner.
- the reliability of recording the differential management information can be improved.
- the reliability of the recorded data improved by the differential management can be further enhanced.
- a plurality of the common areas are provided. According to this aspect, it is possible to appropriately perform differential management using a plurality of common areas. Further, when the write-once recording medium according to the present invention is a two-layer disc, one or more shared areas may be provided in each layer.
- the write-once recording medium further includes a deterministic differential management area for recording the differential management information of the data area, and controls at least one of recording and reading on the data area. It further has a control information recording error for recording information.
- the deterministic differential management area is used to record the differential management information when the recording medium is finalized, the differential management information is not updated any more, and the content of the differential management information is determined. Area. Therefore, for example, when reproducing the write-once type recording medium after finalization, the differential management is performed by reading the differential management information from the deterministic differential management area.
- the determinate differential management area is located in the control information recording area.
- Many rewritable recording media that are widely used have a differential management area located in the control information recording area. It is expected that many rewritable recording media to be developed will have the diff management area arranged in the control information area. Therefore, in the present invention, since the same structure as that of such a general rewritable recording medium is adopted, compatibility with a general rewritable recording medium can be obtained. As a result, playback-only Thus, the write-once recording medium according to the present invention can be appropriately reproduced. Therefore, it has tremendous advantages in terms of easy dissemination to the public.
- the deterministic diff management area may be smaller than the common area. This is because it is only necessary to record at least one piece of differential management information whose content is determined.
- the common area be a wider area than the deterministic differential management area. This is because when the diff management information is updated several times, a plurality of diff management information corresponding to the number of updates is recorded.
- the write-once recording medium according to the present invention is a write-once recording medium that can be recorded only once, so that updated diff management information cannot be overwritten on the same location. It is.
- the deterministic diff management area is also similar to the above-described common area, for example, not only in the control information recording area arranged on the inner side of the write-once recording medium according to the present invention, but also on the write-once recording medium. May be provided in a control information recording area arranged on the outer peripheral side of the control information. In the case of a two-layer disc, one or more deterministic diff management areas may be provided for each layer.
- the common area is arranged between the control information recording area and the data area.
- the shared area by arranging the shared area outside the control information recording area, it is possible to secure the shared area without expanding the control information recording area.
- the control information recording area since the common area is a relatively wide area, if it is arranged in the control information recording area, the control information recording area must be extended.
- the control information recording area is not extended, and the common area is not allocated in the data area, and the common area can be set according to the present invention.
- the diffinit management information includes definition information indicating a position of the data area and differential position information indicating a position of a differential of the data area (that is, for example, as described above).
- a replacement source address which is an address of a location where a differential exists
- alternative recording area position information alternative recording area position information indicating an alternate recording area position for recording recording data to be recorded at the position of the above-mentioned direct. That is, for example, it includes a differential list including a save destination address which is an address of a storage location of the save data.
- the recording apparatus of the present invention can record recording data only once, and records (i) a data area for recording the recording data, and (ii) a location in the data area where a defect exists. Additional data with a common area for temporarily recording evacuation data, which should be or have been recorded, and management information including the evacuation source address and evacuation destination address of the evacuation data.
- a recording device for recording the recording data on a type recording medium comprising: first recording means for recording the recording data in the data area; and recording the save data and the diff management information in the common area.
- a second recording unit that records the evacuation data starting from a predetermined point existing in the common area, The difference management information is recorded starting from a predetermined other point existing at a position different from the one point.
- the first and second recording means including an optical pickup and a controller for controlling the optical pickup are used to appropriately record on the above-described write-once recording medium of the present invention. Data can be recorded.
- the first recording means records the recording data in the data area of the write-once recording medium.
- the difference management information including, for example, a diff list indicating the position of the diff existing on the write-once recording medium is created, or is generated by the recording medium or other communication. Get through the road.
- a configuration may be adopted in which this is stored in a storage unit including a memory such as a RAM.
- the second recording means records the differential management information in a shared area of the write-once recording medium.
- the second recording means may record the differential management information in the common area in various ways.For example, immediately after the write-once recording medium is initialized or formatted, a series of recording data is recorded on the write-once recording medium. Immediately after, for example. In addition, the second recording means records the save data in the common area.
- the second recording means records each of the diff management information and the save data in the common area. Therefore, the recording data can be recorded on the write-once recording medium of the present invention (including various aspects thereof) relatively efficiently. Then, as described above, if there is a free area in the shared area, it becomes possible to record the recording data while appropriately performing the differential management.
- the recording data can be appropriately recorded on the write-once recording medium of the present invention, and various advantages of the write-once recording medium can be enjoyed.
- the recording apparatus of the present invention can also adopt various aspects in correspondence with the various aspects of the write-once recording medium of the present invention described above.
- an optical pickup is suitable as a means for directly recording data or information on the recording medium.
- a pickup, a head or a probe suitable for the type of the write-once recording medium may be used.
- first and second recording means may be separately provided, but usually only one set is sufficient.
- one optical pickup and a controller may be provided, and two types of software for controlling the controller may be provided for each recording unit.
- the second recording means may be configured to repeatedly record the differential management information in the common area a plurality of times. As a result, it is possible to reliably hold the direct management information on the write-once recording medium.
- it may be configured to further include an area setting means for setting the size of the common area and setting the position of the data area according to the set size of the common area. For example, if the common area is set wide, more differential management information can be recorded in the common area. That is, in this case, since the defect management information can be recorded many times in parallel, it is possible to record and retain each of the difference management information even if the number of updates is large.
- the second recording means continuously records the evacuation data starting from the one point corresponding to one end point in the shared area, and further comprising:
- the management information is continuously recorded starting from another point corresponding to the other end point opposite to the one end point in the shared area.
- the evacuation data and the differential management information are continuously recorded in the common area, so that the evacuation data is recorded in an area centered on one point.
- differential management information is recorded in an area centered on other points. Therefore, the evacuation data corresponding to the entity information and the diff management information corresponding to the control information can be generally distinguished in the common area.
- the recording data can be recorded only once, and (i) a data area for recording the recording data, and (ii) a recording area where a defect exists in the data area.
- Postscript type A recording method for recording the recording data on a recording medium comprising: a first recording step of recording the recording data in the data area; and a second recording step of recording the save data and the directory management information in the common area. 2) a recording step, wherein in the second recording step, the evacuation data is recorded starting from a predetermined one point existing in the shared area, and is present at a position different from the one point.
- the difference management information is recorded starting from a predetermined other point.
- the recording method of the present invention similarly to the above-described recording apparatus of the present invention, it is possible to appropriately record data on the write-once recording medium of the present invention (including its various aspects). It becomes.
- the recording method of the present invention can also adopt various aspects.
- a reproducing apparatus of the present invention is a reproducing apparatus for reproducing the recording data recorded on the write-once recording medium of the present invention (including its various aspects), wherein the recording data is recorded in the common area. Reading means for reading the direct management information, and reproducing means for reproducing recorded data recorded in the data area or saved data recorded in the shared area based on the direct management information. ing.
- a reading unit including an optical pickup and a controller for controlling the optical pickup and a decoder for converting image data into an image signal that can be displayed on a display are included. It is possible to appropriately reproduce the recording data recorded on the write-once recording medium of the present invention by using the reproducing means composed of
- the first reading unit reads the differential management information recorded in the common area.
- the differential management information may be stored in a storage unit such as a memory.
- the recording data is recorded in such a manner as to avoid the differences existing in the data area of the recording medium. Therefore, in order to reproduce the recorded data recorded in this way, it is necessary to grasp the position of the directory that existed in the data area at the time of recording. It is necessary. Therefore, the reproducing unit determines the position of the differential in the data area based on the differential management information read by the reading unit, and records the recorded data so as to avoid the differential. Recognize the location and play back the recorded data recorded in the data area or the saved data recorded in the shared area.
- the reproducing apparatus of the present invention while performing the direct management using the direct management information recorded in the common area, the recording data recorded on the write-once recording medium according to the present invention described above. Can be reliably and appropriately reproduced.
- the reproducing apparatus of the present invention can also adopt various aspects.
- the boundary point between the area where the differential management information is recorded and the unrecorded area where the direct management information is not recorded is searched for. It may be configured to read the latest directory management information recorded in the area. That is, each time the direct management information is updated, the new direct management information is recorded in a state where the new direct management information is continuously and sequentially added. Therefore, if such a boundary point is specified, it is possible to specify the position where the latest directory management information is recorded at the same time. In other words, the latest diff management information is recorded without performing relatively complicated address position calculations (for example, calculations using pointers and the like, conversion from logical addresses to physical addresses, etc.). Position can be specified. As a result, it is possible to further improve the processing performance related to the reproduction operation (for example, increase the speed).
- the recording device and the reproducing device as described above may be realized as a dedicated device integrally configured with hardware, or may be realized by causing a computer to read a program.
- the reproducing method of the present invention is a reproducing method for reproducing the recording data recorded on the write-once recording medium of the present invention (including its various aspects), wherein the recording method is performed in the shared area.
- the reproducing method of the present invention it is possible to appropriately reproduce the write-once recording medium of the present invention (including its various aspects), similarly to the above-described reproducing apparatus of the present invention.
- the reproducing method of the present invention can also adopt various aspects.
- the computer program for recording control of the present invention is a computer program for recording control for controlling a computer provided in the above-described recording device of the present invention (including its various aspects). It functions as at least a part of the first recording means and the second recording means.
- the computer program can be read and executed from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program.
- a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program.
- the computer program is executed after being downloaded to a computer via communication means, the above-described recording apparatus of the present invention can be realized relatively easily.
- the computer program for recording control of the present invention can also adopt various aspects, corresponding to the various aspects of the write-once recording medium of the present invention described above.
- a computer program for reproduction control of the present invention is a computer program for reproduction control for controlling a computer provided in the above-described reproduction apparatus of the present invention (including various aspects thereof). In addition, it functions as at least a part of the reading unit and the reproducing unit.
- the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk which stores the computer program, and is executed by the computer.
- the computer program can be copied via communication means. If the program is executed after being downloaded to a computer, the above-described reproducing apparatus of the present invention can be realized relatively easily.
- the computer program for reproduction control of the present invention can also adopt various aspects.
- a computer program product for recording control in a computer-readable medium can be executed by a computer provided in the recording apparatus of the present invention (including its various aspects).
- the program instructions are tangibly embodied to cause the computer to function as at least a part of the first recording means and the second recording means.
- a computer program product for reproduction control in a computer-readable medium can be executed by a computer provided in the above-described reproduction apparatus (including various modes) of the present invention.
- the program instructions are tangibly embodied to cause the computer to function as at least a part of the reading means and the reproducing means.
- the computer program product can be read into a computer from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program product.
- a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program product.
- the computer program product for example, a transmission wave
- the computer program product is downloaded to a computer via communication means
- At least a part of the reproducing means can be relatively easily implemented.
- the computer program product is a computer readable code (or computer) that functions as at least a part of the first recording unit, the second recording unit, the reading unit, and the reproducing unit. (Readable instructions).
- the data structure of the present invention includes: a data area for recording the recording data; evacuation data that is recording data to be recorded or recorded at a location in the data area where a diff exists; and an evacuation source address of the evacuation data. as well as It is provided with a directory management information including an evacuation destination address, and a common area for temporarily recording the information, and in the common area, starting from a predetermined point existing in the common area.
- the evacuation data is recorded, and the difference management information is recorded starting from a predetermined other point existing at a position different from the one point.
- the recording capacity of the shared area is efficiently saved by recording the direct management information and the save data in the shared area. It is possible to record and play back recorded data while performing optimal diff management with maximum and appropriate utilization.
- the data structure of the present invention can also search for various aspects.
- the data area and the common area are provided.
- the difference management information and the save data start from one different point. Recorded continuously. Therefore, it is possible to record and reproduce the recording data while performing the diff management by efficiently and maximally using the recording capacity of the common area (or the write-once recording medium).
- the recording apparatus includes the first recording means and the second recording means, or the first recording step and the second recording step. Therefore, the recording data can be appropriately recorded on the write-once recording medium according to the present invention.
- the reproducing apparatus and method of the present invention there are provided a reading unit and a reproducing unit, or a reading step and a reproducing step. Therefore, it is possible to appropriately read and reproduce recorded data from the write-once recording medium according to the present invention.
- FIG. 1 is an explanatory diagram showing an embodiment of a write-once recording medium of the present invention.
- FIG. 2 is an explanatory diagram showing the contents of the differential management information in the embodiment.
- FIG. 3 is an explanatory diagram illustrating an example of a differential list in the embodiment.
- FIG. 4 is an explanatory diagram illustrating an example of recorded contents of a shared error in the embodiment.
- FIG. 5 is an explanatory diagram illustrating an example of recorded contents of a deterministic differential management system according to the embodiment.
- FIG. 6 is a block diagram showing a recording / reproducing apparatus which is an embodiment of the recording apparatus and the reproducing apparatus of the present invention.
- FIG. 7 is a block diagram showing a disk drive of the recording / reproducing apparatus of the embodiment.
- FIG. 8 is a block diagram illustrating a backend of the recording / reproducing apparatus according to the embodiment.
- FIG. 9 is a flowchart showing an initial setting operation in the recording / reproducing apparatus of the embodiment.
- FIG. 10 is a flowchart showing a recording operation and the like in the recording / reproducing apparatus of the embodiment.
- FIG. 11 is a schematic diagram conceptually showing a state of data on a recording medium during a recording operation in the recording / reproducing apparatus of the embodiment.
- FIG. 12 is a flowchart showing the finalizing process in the recording / reproducing apparatus of the embodiment.
- FIG. 13 is a flowchart showing a reproducing operation in the recording / reproducing apparatus of the embodiment.
- FIG. 14 is an explanatory diagram showing another embodiment of the write-once recording medium of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a recording structure of a write-once optical disc according to an embodiment of the present invention.
- the left side in FIG. 1 is the inner circumference of the write-once optical disc 100
- the right side in FIG. 1 is the outer circumference of the optical disc 100.
- on the recording surface of the write-once optical disc 100 there is a lead-in area 101 on the inner peripheral side, and a user data area 1 on the outer peripheral side of the lead-in area 101. 08 exists, and a door area 103 exists on the outer peripheral side of the user data area 108.
- a common area 104 is arranged between the lead-in area 101 and the user data area 108.
- a common area 105 is arranged between the user data area 108 and the lead-out area 103.
- control information and management information for controlling and managing the recording and reading of information or data on the optical disk 100 are recorded, respectively.
- a deterministic difference management area 106 is provided in the lead-in area 101.
- the deterministic differential management area 107 is also provided in the lead-out area 103 ⁇ .
- the deterministic effect management areas 106 and 107 record the effect management information 120 (see Fig. 2), respectively.
- recording data such as image data, audio data, and content data is recorded.
- the differential management information 120 is temporarily recorded.
- the definitive diff management areas 120 and 107 also record the deficit management information 120, but the definite diff management areas 106 and 107 and the shared area 104 Differences from 105 will be described later.
- the shared areas 104 and 105 are also alternative recording areas for saving recording data from the differentials in the user data area 108. That is, when a differential exists in the user data area 108, the recording data that should have been recorded at the location where the differential exists or the recording data recorded at that location (hereinafter, such recording The data is referred to as “evacuated data” as appropriate) and is alternatively recorded in the common area 104 or 105.
- common areas 104 or 105 are not limited to the form relating to two common areas, and may be, for example, one common area or more common areas. It may have a service area.
- the differential management information 120 is information used for the differential management performed by the recording / reproducing device 200 (see FIG. 6).
- the recording / reproducing device 200 performs differential management when recording data on the optical disk 100 or when reproducing recorded data from the optical disk 100.
- the difference management mainly means that when a difference such as a scratch, dust or deterioration exists on the user data area 108 of the optical disk 100, the difference exists.
- the saved data is recorded in the shared area 104 or 105. Also, when playing back the recorded data recorded in the user data area 108, the position where the differential is present is recognized, and the position where the differential should or should not have been recorded should be recognized.
- Processing such as reading the recorded data from the shared area 104 or 105 is also performed as part of the direct management.
- the recording / reproducing device 200 needs to recognize the position of the differential in the user data area 108.
- the differential management information 120 is mainly used by the recording / reproducing device 200 to recognize the position where the diff exists.
- Fig. 2 shows the contents of the diff management information 120.
- the differential management information 120 includes setting information 122 and a differential list 122.
- the setting information 122 includes a start address of the user data area 108, an end address of the user data area 108, a size of the inner common area 104, Includes the size of the outer common area 105 and other information.
- Figure 3 shows the contents of the diff list 122.
- an address indicating a position where the difference exists in the user data area 108 (hereinafter, this is referred to as a “diffect address J”) is included in the differential list 122. )
- An address indicating the recording position of the save data in the shared area 104 or 105 (hereinafter referred to as “alternate recording address”), and other information. Is recorded. That is, the differential address is an example of the “evacuation source address” in the present invention, and the substitute recording address is an example of the “evacuation destination address” in the present invention.
- a plurality of defext addresses corresponding to those divers and a plurality of alternative recording addresses are recorded in the defext list 122. You.
- the diff management can be performed not only for the user data area 108 of the optical disc 100 but also for the entire recording surface of the optical disc 100.
- the shared areas 104 and 105 of the optical disc 100 and the deterministic defect management areas 106 and 107 are both areas for recording the differential management information 120. There are, however, the common areas 104 and 105 and the deterministic differential management rear areas 106 and 107 are located at different locations and have different sizes, so use The purpose is different.
- evacuation data is recorded in the common area 104 or 105.
- FIG. 4 shows an example of a state where the differential management information 120 and the evacuation data are recorded in the common area 104 or 105.
- the common areas 104 and 105 are areas for temporarily recording the differential management information 120 until the optical disc 100 is finalized.
- the difference management information 120 is information necessary for the difference management, and the presence or absence of the difference.Since the position differs for each optical disk, the difference management information is recorded and held on each optical disk. Need to be kept. In this embodiment, before finalization, the differential management information 120 is recorded and held in the shared area 104 or 105 of the optical disk 100.
- evacuation data is recorded in the common area 104 or 105.
- the difference management information 120 is recorded from the inner circumference of the optical disc 100
- the save data is recorded from the outer circumference of the optical disc 100.
- the differential management information 120 is recorded from the outer circumference of the optical disc 100, and the optical The configuration may be such that the save data is recorded from the inner peripheral side of the disk 100.
- the present invention is not limited to this.
- the diff management information 120 is recorded from a predetermined point in the common area 104 or 105, and the evacuation data is recorded from another predetermined point that does not overlap with the predetermined point. It may be configured to record.
- the differential management information 120 be repeatedly recorded twice in the common area 104 or 105 (FIG. This shows a state where the repetitive recording of the diff management information 120 has been performed twice, so a total of four diff management information 120 and two evacuation data are drawn).
- FIG. 4 shows a state where the repetitive recording of the diff management information 120 has been performed twice, so a total of four diff management information 120 and two evacuation data are drawn).
- the differential management information 120 can be reliably recorded, and can be reliably reproduced.
- it is not recorded twice for example, once or three or more times, it is possible to appropriately record and reproduce the differential management information 120 and the evacuation data.
- the diff management information 120 may be updated several times. For example, if dirt adheres to the optical disc 100 between the first recording and the second recording (recording), the differential (dirt) is detected during the second recording, The differential list 122 is updated based on this. When the differential list 122 is updated, the differential management information 120 including the updated differential list 122 is added to the common area 104 or 105. In addition, evacuation data is also recorded in the shared area 104 or 105. Since the optical disc 100 is a write-once recording medium, it is not possible to record the updated direct management information 120 over the existing direct management information 120. Therefore, as shown in FIG. 4, the updated direct management information 120 and save data are continuously recorded after the existing direct management information 120 and save data.
- the shared area 104 and 105 In order to realize such repetitive and parallel recording of the differential management information 120, the shared area 104 and 105 must be deterministic differential management areas 106 and 100. Wider than seven.
- FIG. 5 shows an example of a state where the difference management information 120 is recorded in the deterministic difference management area 106 or 107.
- Deterministic Diffek The disc management areas 106 and 107 are areas for definitely recording the diff management information 120 when the optical disc 100 is finalized. That is, before finalization, the deterministic differential management areas 106 and 107 are in an unrecorded state. When finalized, the difference management information 120 is recorded in the determinate difference management area 106 and 107, and the recording state continues thereafter.
- the differential management information 120 is repeatedly recorded twice in the deterministic differential management area 106 or 107.
- the differential management information 120 can be reliably recorded and can be reliably reproduced.
- the common area 104 is arranged between the lead-in area 101 and the user data area 108, and the common area 105 is connected to the user data area 1. Since it is arranged between 08 and the lead-out area 103, it is possible to achieve compatibility between the write-once optical disc 100 and a general rewritable optical disc. Because, in order to achieve compatibility with general rewritable optical discs, there is a need for a reader, a user data area, and a reader door, and the order, arrangement, size (width) of these areas It is necessary to maintain the basic record structure such as This is because the optical disc 100 maintains such a basic recording structure despite the provision of the common areas 104 and 105.
- the shared area 104 is located in the lead-in area 101, the size of the lead-in area 101 must be increased because the shared area 104 is relatively large as described above. Inconvenience that it becomes impossible to obtain is caused. However, in this embodiment, since the shared area 104 is arranged outside the lead area 101, such a problem does not occur. Further, if the shared area 104 is provided in the user data area 108, the differential management information 120 having control information properties and the user data which is an area where recording data is to be recorded. The information enters the area 108, and control information and recording data having different properties are stored in the user data area 108. Inconvenient arises if mixed in. In this embodiment, since the common area 104 is arranged outside the user data area 108, such a disadvantage does not occur. The same applies to the common area 105.
- the start address and end address of the user data area 108, the size of the shared area 104, and the size of the area 105 are included in the setting information 122 of the differential management information 120. (See Figure 2).
- the setting information 122 can be set by the recording / reproducing device 200.
- the start address and end address of the user data area 108, the size of the shared area 104, and the size of 105 can be changed if this is specified as setting information 122.
- compatibility with general rewritable recording media can be maintained even if it is changed. Therefore, if the start address of the user data area 108 is shifted backward (outer side), a space can be secured between the lead-in area 101 and the user data area 108.
- a common area 104 can be arranged. Further, depending on the setting method of the start address of the user data area 108, a relatively large (large size) common area 104 can be secured. The same applies to the common area 105.
- the optical disc 100 of the present embodiment since the deterministic direct management areas 106 and 107 are arranged in the lead-in area 101 and the lead-out area 103, respectively, Compatibility can be obtained between the write-once optical disc 100 and a general rewritable optical disc. That is, in a general rewritable optical disk, areas for recording the differential management information are arranged in the lead-in area and the read-out area, respectively.
- the optical disc 100 also has deterministic defect management areas 106 and 107 arranged in the lead-in area 101 and the lead-out area 103. In this regard, the record structures of both parties are consistent. Therefore, compatibility can be maintained between the write-once optical disc 100 and a general rewritable optical disc.
- the common area 104 is also provided.
- 105 is an area where save data can also be recorded. I'm wearing Therefore, for example, compared to an optical disc in which the recording area for the differential management information 120 and the recording area for the save data are separated, the extremely efficient use is possible from the following points. I can say.
- the optical disc according to the comparative example if recording is completed up to the limit of the recording capacity in one of the two recording areas, either the differential management information 120 or the save data is further recorded. You can't do that. Therefore, even if there is an empty space in the other recording area, it is difficult or impossible to perform the diff management, so that it is impossible to record more recording data on the optical disc.
- the disc management information 120 and the save data are recorded in the same recording area without separating the recording areas. it can. For this reason, as described above, an empty area still exists because one of the recording area of the defect management information 120 and the recording area of the save data is first recorded to the recording capacity limit. Nevertheless, there is no inconvenience that recording data cannot be recorded. That is, by using the common area corresponding to the above-described two recording areas, it is possible to use the maximum recording capacity (especially, the recording capacity of the common area).
- the data capacity of the diff management information 120 is larger than the data capacity of the saved data, or conversely, the data capacity of the saved data is compared with the data capacity of the diff management information 120. Even if the size becomes large, if there is a free area in the shared area, these data can be appropriately recorded, and as a result, the directory management can be appropriately performed.
- the recording capacity of the common area can be set to a desired size by the setting information 122. For this reason, if it is estimated that the occurrence of the diff will occur frequently, it is possible to increase the recording capacity of the shared area 104 or 105 in advance. Alternatively, for example, when it is estimated that the occurrence of the differential is small due to a factor such as a high performance of the manufacturing technology of the optical disc 100, the recording capacity of the common area 104 or 105 is reduced in advance. It is also possible. As a result, the necessary user data area 108 is secured, and the optimum differential This makes it possible to manage resources.
- optical disk 100 has three or more shared areas, at least one of the shared areas must be recorded continuously as a mixture of the directory management information 120 and the save data as described above. In this case, it is possible to enjoy the various benefits of the optical disk 100 described above.
- FIG. 6 is a block diagram conceptually showing a basic configuration of the recording / reproducing apparatus 200 according to the embodiment of the present invention
- FIG. 7 is a block diagram showing a disk drive of the recording / reproducing apparatus.
- FIG. 8 is a block diagram showing a back end of the recording / reproducing apparatus.
- the recording / reproducing apparatus 200 has a function of recording the recorded data on the optical disc 100 and a function of reproducing the recorded data recorded on the optical disc 100.
- the recording / reproducing device 200 includes a disk drive 300 and a back end 400.
- FIG. 7 shows the internal configuration of the disk drive 300.
- the disk drive 300 is a device that records information on the optical disk 100 and reads the information recorded on the optical disk 100.
- the disc drive 300 includes a spindle motor 351, an optical pickup 352, an RF amplifier 3553, and a servo circuit 354.
- the spindle motor 35 1 is a motor for rotating the optical disc 100.
- the optical pickup 352 records recording data and the like on the recording surface by irradiating the recording surface of the optical disk 100 with a light beam, and receives the reflected light of the light beam on the recording surface. This is a device that reads recorded data.
- the optical pickup 352 outputs an RF signal corresponding to the reflected light of the light beam.
- the RF amplifier 355 widens the RF signal output from the optical pickup 352 and outputs the RF signal to the modulation / demodulation unit 355. Further, the RF amplifier 353 converts the RF signal into a double frequency signal WF, a track error signal TE, and a Produces an okas error signal FE and outputs these.
- the servo circuit 354 is a servo control circuit that controls the drive of the optical pickup 352 and the spindle motor 351 based on the track error signal TE, the focus error signal FE, and other servo control signals.
- the disk drive 300 includes a modulation / demodulation unit 365, a buffer 365, an interface 365, and a light beam drive unit 358.
- the modulation and demodulation unit 355 is a circuit having a function of performing error correction on recording data at the time of reading, and a function of adding an error correction code to recording data and modulating the recording data at the time of recording. Specifically, at the time of reading, the modulation / demodulation unit 355 demodulates the RF signal output from the RF amplifier 353, performs error correction on the demodulated RF signal, and then transmits the demodulated signal to the buffer 3 5 Output to 6. Further, as a result of performing error correction on the demodulated RF signal, the modulation and demodulation unit 355 determines that error correction is impossible or the number of error-corrected codes exceeds a certain reference value.
- an error signal indicating that fact is generated is output to the direct detection unit 359.
- the modulation / demodulation unit 355 adds an error correction code to the recording data output from the buffer 356, and then applies the error correction code to the optical characteristics of the optical disk 100, etc. Modulation is performed so as to have a suitable code, and the modulated recording data is output to the light beam driving unit 358.
- the buffer 356 is a storage circuit for temporarily storing recording data.
- the interface 357 is a circuit for performing input / output control or communication control of recording data and the like between the disk drive 300 and the backend 400. Specifically, at the time of reproduction, the interface 357 stores the recording data output from the buffer 356 (that is, reads from the optical disk 100) in response to a request command from the back end 400. The recorded data is output to the backend 400. In recording, the interface 357 receives recording data input to the disk drive 300 from the back end 400 and outputs this to the buffer 356. Further, the interface 357 is stored in the diff management information creation unit 360 in response to a request command from the back end 400. Output all or part of the diff list to the pack end 400.
- the light beam drive unit 358 generates a light beam drive signal corresponding to the recording data output from the modulation / demodulation unit 355 during recording, and outputs this to the optical pickup 352.
- the optical pickup 352 modulates the light beam based on the light beam drive signal and irradiates the light onto the recording surface of the optical disc 100. As a result, recording data and the like are recorded on the recording surface.
- the disk drive 300 includes a differential detector 359 and a differential management information generator 360.
- the differential detector 359 is a circuit that detects the differential of the optical disk 100. Then, the differential detector 359 generates a differential detection signal indicating the presence or absence of the differential and outputs this signal. The differential detector 359 performs differential detection based on the result of error correction of recorded data at the time of reading information (at the time of verifying or reproducing). As described above, as a result of performing error correction on the demodulated RF signal, the modulation and demodulation unit 355 determines that error correction is not possible or the number of error-corrected codes is equal to a certain standard. When the value exceeds the value, an error signal substantially indicating that fact is generated, and this is output to the differential detector 359. Upon receiving this error signal, the differential detector 359 outputs a differential detection signal indicating that a differential is present.
- the difference management information creation unit 360 is a circuit that creates or updates the difference management information 120 based on the difference detection signal output from the difference detection unit 359.
- the direct management information 120 is rewritably stored in a storage circuit provided in the direct management information creating unit 360. Further, in response to a request command from the back end 400, the direct management information creating unit 360 sends the direct management information 120 to the back end 400 via the interface 357. Output.
- the disk drive 300 has a CPU 361.
- the CPU 361 controls the overall control of the disk drive 300 and controls the exchange of information between the elements of the disk drive 300 ⁇ .
- C The PU 361 controls the recording operation and the reading operation of the recording data and the directory management information 120. Further, the CPU 361 controls data exchange between the disk drive 300 and the backend 400 in response to a control command or a request command sent from the backend 400.
- FIG. 8 shows an example of the internal configuration of the back end 400.
- the pack end 400 performs reproduction processing on the recording data read from the optical disk 100 by the disk drive 300, and records data supplied from the outside for the purpose of recording on the optical disk 100. It is a device that receives and encodes this and sends it out to the disk drive 300.
- Knock end 400 is a drive control unit 471, a video decoder 472, a video decoder 473, a video encoder 474, an audio encoder 475, a system control unit 476, and differential management. Part 4 7 7 is provided.
- the drive controller 471 is a circuit that controls the reading process and the recording process of the disk drive 300. The operation of reading recorded data from the optical disc 100 and reproducing it, and the work of receiving recorded data from the outside and recording it on the optical disc 100, are performed by the pack end 400 and the disc drive 300 in cooperation. Work and do.
- the drive control unit 471 realizes cooperation between the pack end 400 and the disk drive 300 by controlling the reading process and the recording process of the disk drive 300.
- the drive controller 471 reads, records, and outputs recording data from the buffer 356 to the disk drive 300, and outputs the recorded data from the buffer management information generator 360 to the disk drive 300. It outputs a request command related to the output of the port management information 120. Further, the drive control unit 371 performs input / output control for controlling input / output of recording data and input / output control information 120 and other various information.
- the video decoder 472 and the audio decoder 473 demodulate the recording data read from the optical disk 100 by the disk drive 300 and supplied through the drive control unit 471, respectively.
- This is a circuit that converts the data into a reproducible state using a display or speed.
- the video encoder 4 7 4 and the audio encoder 4 7 5 A video signal, an audio signal, and the like input from outside for recording on the disc 100 are received, and are encoded by, for example, the MPEG compression method or the like, and are encoded by the disc drive 3 via the drive control unit 47 1. It is a circuit that supplies to 0. During playback, the system controller 476 controls the drive controller 471, video decoder 472, audio decoder 473, and differential manager 479, and records in cooperation with these. This is a circuit that performs data reproduction processing. At the time of recording, the system controller 476 controls the drive controller 471, video encoder 474, audio encoder 475, and differential manager 479, and records in cooperation with these. Perform data recording processing.
- the system control unit 476 together with the drive control 471, controls the disk drive 300 in order to realize the cooperation between the disk drive 300 and the backend 400 during playback and recording. Control (for example, generation and transmission of various request commands, reception of response signals, etc.).
- the difference management section 4777 has a storage circuit therein, and stores all of the difference management information 120 created and updated by the difference management information creation section 360 of the disk drive 300. Or it has a function to receive a part and hold it. Then, the difference management unit 477 performs the difference management together with the system control unit 4776.
- FIG. 9 shows the initial setting operation of the recording / reproducing device 200.
- the recording / reproducing apparatus 200 performs the initial setting after the optical disc 100 is mounted on the drive unit 300 and before recording or reproducing the recording data.
- the initial setting is a process for preparing for recording or reproduction of the recorded data.
- the process includes various processes. The following processes are included. Among these processes, the initialization of the optical disc 100 and the diff management information 12 The creation of 0, transmission of the difference management information 120 to the backend, and the like will be described. These processes are mainly performed under the control of the CPU 361 of the drive unit 300.
- the CPU 361 of the dry unit 300 has the optical disk 100 as an unrecorded disk (plank disk). It is determined whether or not this is the case (step S11).
- the CPU 361 performs an initialization process on the optical disc 100 (step S12).
- the diff management information creating section 360 creates the diff management information 120 (step S13). Specifically, the start address and end address of the user data area 108 set during the initialization processing and the sizes of the shared areas 104 and 105 are obtained, and the setting information 122 is created. I do. Further, a directory list 122 is created.
- the diff list 122 created here is only an outer frame and has no details. That is, no differential address is recorded, and no specific alternative recording address is recorded. However, only the header and identification information are recorded.
- the created direct management information 120 is stored and held in the direct management information creating unit 360.
- the CPU 361 sends the differential management information 120 stored in the differential management information creating section 360 to the pack end 400 (step S 14). 20 is stored in the differential management section 477 of the backend 400.
- the CPU 361 repeatedly writes the differential management information 120 stored in the differential management information creating section 360 to the shared area 104 or 105 of the optical disk 100. Times (step S15).
- step S11 if the optical disc 100 is not an unrecorded disc (step S11:
- Finalization is a process for adjusting the recording format so that the optical disk 100 can be played back by a playback device for a general rewritable optical disk or a playback device for a general read-only optical disk. . Whether or not the optical disc 100 has been finalized can be known by referring to the control information recorded in the lead-in area 101 of the optical disc 100 or the like.
- step S16 If the optical disk 100 has not been finalized (step S16: NO), the CPU 361 shares the differential management information 120 with the optical disk 100. Read from the application area 104 or 105 (step S17). In other words, if the optical disc 100 is not an unrecorded disc, since the directory management information 120 created in the past is already recorded in the shared area 104 or 105, in this step, Read this.
- the CPU 361 stores the latest one in the common area 104 or 105. Select and read this (step S18). That is, before finalization, the diff management information 120 is recorded in the common area 104 or 105 every time it is updated. The plurality of pieces of diff management information 120 are continuously arranged in the updated order. Therefore, in the shared area 104 or 105, the last diff management information that is located last is the latest diff management information. Therefore, the CPU 361 selects and reads the last directory management information.
- the following method is used to identify the last piece of the directory management information 120. That is, a plurality of differential management information 120 and evacuation data are recorded in the common area 104 or 105. Since the difference management information 120 and the evacuation data are recorded from the outer circumference side or the outer circumference side, respectively, the respective data (information) can be effectively distinguished. Therefore, in this case, from the start address of the shared area 104 or 105 (that is, the address on the innermost side) to the end address of the area where the last differential management information 120 is recorded. Information is recorded, and thereafter, it is unrecorded, and save data is recorded following the unrecorded area.
- the CPU 361 controls the optical pickup 352 to scan the common area 104 or 105 from its start address, detect a position where recording has not been performed, and detect the position. Scans the common area 104 or 105 in the reverse direction from.
- the last direct management information 120 is specified. According to such a method, the last differential management information 120 can be easily specified without using a pointer or the like.
- the CPU 366 reads the last diff management information 120 read. It is stored in the differential management information creating section 360, and is sent to the pack end 400 (step S19). The last difference management information 120 is stored in the difference management unit 477 of the backend 400.
- step S16 YE S
- the CPU 361 converts the differential management information 120 to a deterministic diff.
- the data is read from the control area 106 or 107 (step S20) and sent to the backend 400 (step S21).
- the effect management information 120 is stored in the effect management unit 477 of the backend 400.
- the differential management information 120 is created, or the differential management information 120 is selectively read from the common area 104 or 105, or the differential management information 120 is determined.
- the data is read from the differential management area 106 or 107 and stored in the direct management information creating section 360, and is also stored in the differential management section 477 of the back end 400. This prepares for diff management and completes the initial setup.
- FIG. 10 mainly shows the recording operation of the recording / reproducing device 200.
- the recording / reproducing apparatus 200 performs a recording operation of recording the recording data in the user data area 108 of the optical disc 100.
- the recording / reproducing device 200 performs the recording operation while performing the diff management. Further, the recording / reproducing device 200 performs a verify process during the recording operation, and updates the diff list 122 based on the result of the verify process.
- the recording operation is realized by the cooperation of the CPU 361 of the dry unit 300 and the system control unit 476 of the back end 400.
- the recording / reproducing apparatus 200 records the recording data in response to this (step S334). ). Recording of the recording data is performed for each predetermined block.
- the recording / reproducing device 200 refers to the differential management information 120 stored in the differential management section 477 of the pack end 400, and based on this, manages the recorded data while performing the differential management. Record The recording / reproducing apparatus 200 performs verification every time one block is recorded (step S35), and updates the diff management information 120 based on the verification result.
- the updated differential management information 120 is the differential management information stored in the differential management information creating unit 360 of the drive unit 300.
- step S36 when it is recognized that the recording of the recording data has failed as a result of the verification (step S36: YES), the CPU 361 of the drive unit 300 fails in the recording.
- the recorded data ie, the save data
- the CPU 361 infers that there is a differential at the location where the recording data should have been recorded, and provides a data address indicating the location and a corresponding alternate recording address as a differential list. Record in 1 2 2 (Step S 38).
- the CPU 361 sends the updated differential management information 120 to step S37.
- step S41 the recording data recorded in step (i.e., the save data)
- step S41 recording is repeatedly performed twice from the inner peripheral side of the common area 104 or 105 of the optical disk 100 (step S41). Therefore, in the shared area 104 or 105, the save data and the differential management information 120 are recorded from the outer peripheral side or the inner peripheral side, respectively, as shown in FIG.
- the differential management information 120 recorded in the shared area 104 or 105 is the differential management information stored in the differential management information creating unit 360. Thus, the recording operation is completed.
- FIG. 11 is a schematic diagram conceptually showing the state of data during the recording operation of the recording / reproducing device 200.
- predetermined recording data is recorded in the user data area 108 for the user data area 108 where no recording data exists. To go.
- the user data area 108 has a differential. That is, as shown in FIG. 11 (b), the user data area 108 It is assumed that an area 108 d exists.
- the recording data to be recorded in the differential area 108d (ie, the save data) is stored in a predetermined area of the common area 104 or 105. For example, recording is performed in order from the outer peripheral side.
- This operation is not limited to the recording operation, and is also performed when it is recognized that a diff exists during the reproduction of the recorded data recorded in the user data area 108 as described above. Is
- the difference management information 120i indicating the address of the difference area 108d is recorded in the common area 104.
- the differential management information 120i is recorded in a predetermined area of the shared area 104 or 105, for example, in order from the inner circumference side.
- desired recording data is recorded in the user data area 108 as shown in FIG. 11 (e).
- the optical disk has a plurality of shared areas, at least one shared area stores the differential management information 120 and the save data as described above.
- the recording may be performed from the inner peripheral side or the outer peripheral side, respectively. According to this, as described above, it is possible to efficiently and maximally utilize the recording capacity of the shared area to record the recording data.
- one common area group including at least one common area is allocated to record the difference management information 120, and another common area group including at least one common area is allocated. , May be assigned to record evacuation data. If one common area not included in these common area groups is configured to record the difference management information 120 and the save data from the inner circumference side or the outer circumference side, respectively, as described above, Various benefits of the recording / reproducing device 200 can be enjoyed.
- the shared area in which the data is recorded in a mixture of the differential management information and the saved data may be one shared area, or a plurality of shared areas selected from a plurality of shared areas. It may be.
- the diff management information 120 and the save data are recorded in one common area, and the recording capacity of the common area is limited.
- another common area may be newly selected and the direct management information 120 and the save data may be continuously recorded. That is, by sequentially recording the plurality of common areas one by one, it is possible to suppress the operation amount of, for example, a pickup related to the recording operation of the difference management information 120 and the save data. That is, it is possible to realize a high-speed recording operation and a reduction in power consumption.
- these data are arbitrarily recorded in each of a plurality of common areas, while efficiently and maximally using the recording capacity of the common area to perform the diff management, It is possible to record data.
- FIG. 12 shows the finalizing process.
- the recording / reproducing apparatus 200 confirms that the optical disk 100 has not been finalized. After that (Step S51: YES), a finalizing process is performed on the optical disk 100 (Step S52).
- the defect management information 120 is repeatedly recorded twice in the deterministic defect management area 106 or 107 of the optical disc 100 (step S53).
- the differential management information 120 recorded in the deterministic differential management area 106 or 107 is the differential management information 1 stored in the differential management information creating section 360. It is 20.
- the number of the differential management information 120 recorded in the deterministic differential management area 106 or 107 is two, but may be three or more or one.
- the finalization process is completed.
- FIG. 13 shows the reproducing operation of the recording / reproducing device 200.
- the recording / reproducing device 200 confirms that the optical disk 100 is not an unrecorded disk (step S71: NO). Then, the recording data recorded in the user data area 108 of the optical disc 100 is reproduced (step S72). The recording / reproducing device 200 reproduces the recorded data while performing the diff management based on the diff management information 120 stored in the diff management 477 of the back end 400. As described above, according to the recording / reproducing apparatus 200 of this embodiment, before finalizing the optical disc 100, the differential management information 120 is shared with the shared area 104 or 1 of the optical disc 100.
- the differential management information 120 is recorded in the deterministic differential management area 106 or 107 of the optical disk 100.
- the disc management information 120 is read from the common area 104 or 105 of the optical disc 100.
- the differential management information 120 is read from the deterministic differential management area 106 or 107 of the optical disk 100.
- the diff management information 120 and the evacuation data are stored in the common area 110, respectively.
- the differential management information 120 is converted to the deterministic differential management area 106 or 107 of the optical disk 100. Therefore, compatibility between the write-once optical disc 100 and a general rewritable optical disc can be established.
- FIG. 14 shows an example in which the write-once recording medium of the present invention is applied to a two-layer optical disk.
- This embodiment shows an example of a parallel track path in which the recording directions of the first layer and the second layer are the same, but the form of an opposite track path in which the recording directions of the first layer and the second layer are opposite. May be taken.
- the second layer is provided with a lead-in area 171, a user data area 178, and a lead-out area 173.
- the lead-in area 171, and the user data area 17 8 is provided with a shared area 174, and between the user data area 178 and the lead-out area 173, a shared area 175 is provided. Further, in the lead-in area 171 and the lead-out area 173, deterministic differential management areas 174 and 177 are provided, respectively.
- the recorder or player according to the optical disc 100 as an example of a recording medium and the optical disc 100 as an example of a reproduction / recording apparatus has been described.
- the present invention is not limited to an optical disc and its recorder or player, but can be applied to various write-once recording media and recorders or players for other high-density recording or high transfer rates.
- a write-once recording medium according to the present invention, a recording device and a recording method for recording recording data on a write-once recording medium, a reproduction apparatus and a reproduction method for reproducing the recording data recorded on the write-once recording medium, recording or reproduction control
- Computer programs and data structures can be used for, for example, high-density optical disks, magnetic disks, magneto-optical disks, etc., which can record various types of information at high density for consumer or business use. Can also be used for a recorder or a player according to the present invention. Further, for example, the present invention can also be used for an information recording medium, a recording or reproducing device, etc. which is mounted on various consumer or business computer devices or connectable to various computer devices.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005511948A JP3865260B2 (ja) | 2003-07-23 | 2004-07-22 | 追記型記録媒体、追記型記録媒体用の記録装置及び記録方法、追記型記録媒体用の再生装置及び再生方法、記録又は再生制御用のコンピュータプログラム、並びにデータ構造 |
US10/565,076 US7869318B2 (en) | 2003-07-23 | 2004-07-22 | Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure |
EP04748033A EP1647986A4 (en) | 2003-07-23 | 2004-07-22 | A RECORDABLE RECORDING MEDIA, RECORDER AND RECORDING METHOD FOR A RECORDABLE RECORDING MEDIA, REPRODUCTION DEVICE AND REPRODUCTION METHOD FOR A RECORDABLE RECORDING MEDIUM, COMPUTER PROGRAM FOR CONTROLLING RECORDING AND PLAYBACK AND DATA STRUCTURE |
CN2004800210413A CN1826650B (zh) | 2003-07-23 | 2004-07-22 | 一次写入型记录介质的记录装置及方法 |
US11/710,465 US7656762B2 (en) | 2003-07-23 | 2007-02-26 | Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure |
US11/710,547 US20080005610A1 (en) | 2003-07-23 | 2007-02-26 | Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003200303 | 2003-07-23 | ||
JP2003-200303 | 2003-07-23 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US10/565,076 A-371-Of-International US7869318B2 (en) | 2003-07-23 | 2004-07-22 | Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure |
US11/710,547 Division US20080005610A1 (en) | 2003-07-23 | 2007-02-26 | Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure |
US11/710,465 Division US7656762B2 (en) | 2003-07-23 | 2007-02-26 | Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure |
Publications (1)
Publication Number | Publication Date |
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WO2005008657A1 true WO2005008657A1 (ja) | 2005-01-27 |
Family
ID=34074466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/010768 WO2005008657A1 (ja) | 2003-07-23 | 2004-07-22 | 追記型記録媒体、追記型記録媒体用の記録装置及び記録方法、追記型記録媒体用の再生装置及び再生方法、記録又は再生制御用のコンピュータプログラム、並びにデータ構造 |
Country Status (6)
Country | Link |
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US (3) | US7869318B2 (ja) |
EP (3) | EP1780717A3 (ja) |
JP (1) | JP3865260B2 (ja) |
KR (1) | KR101010227B1 (ja) |
CN (3) | CN101046991A (ja) |
WO (1) | WO2005008657A1 (ja) |
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CN101047007A (zh) * | 2003-07-23 | 2007-10-03 | 日本先锋公司 | 一次写入型记录介质,记录和重放装置及方法,计算机程序 |
EP1780717A3 (en) * | 2003-07-23 | 2007-09-12 | Pioneer Corporation | Write-once-type recording medium, recording apparatus and method for write-once-type recording medium, reproducing apparatus and method for write-once-type recording medium, computer program for recording or reproduction control, and data structure |
KR20050031683A (ko) * | 2003-09-30 | 2005-04-06 | 삼성전자주식회사 | 한번 기록 디스크 및 그 디스크의 사용 방법 |
CN116661698B (zh) * | 2023-06-16 | 2024-02-13 | 浙江清环智慧科技有限公司 | 一种窨井排水监测设备中存储器的管理方法及装置 |
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- 2004-07-22 CN CNA2007101010509A patent/CN101046990A/zh active Pending
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- 2004-07-22 KR KR1020067001581A patent/KR101010227B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
EP1780717A2 (en) | 2007-05-02 |
CN101046990A (zh) | 2007-10-03 |
US20070229997A1 (en) | 2007-10-04 |
JPWO2005008657A1 (ja) | 2006-09-07 |
JP3865260B2 (ja) | 2007-01-10 |
EP1647986A4 (en) | 2007-08-22 |
CN1826650A (zh) | 2006-08-30 |
US20080005610A1 (en) | 2008-01-03 |
EP1780718A2 (en) | 2007-05-02 |
KR20060058090A (ko) | 2006-05-29 |
CN101046991A (zh) | 2007-10-03 |
EP1647986A1 (en) | 2006-04-19 |
CN1826650B (zh) | 2012-06-13 |
US20070041284A1 (en) | 2007-02-22 |
KR101010227B1 (ko) | 2011-01-21 |
US7656762B2 (en) | 2010-02-02 |
US7869318B2 (en) | 2011-01-11 |
EP1780717A3 (en) | 2007-09-12 |
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