Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
• • 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
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
  • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
  • G11B7/0045—Recording
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/007—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
  • G11B7/00745—Sectoring or header formats within a track
• • 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
  • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
  • G11B2007/0009—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
  • 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
• • 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
• • 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

Definitions

• OPTICAL DISC METHOD AND APPARATUS FOR MANAGING A DEFECTIVE AREA ON AN OPTICAL DISC
• the present invention relates to a method for managing a defective area on a high density optical disc, and more particularly to a write once optical disc, an apparatus and a method for managing a defective area on a high density optical disc such as a Blu-ray Disc Write Once (BD-WO).
• BD-WO Blu-ray Disc Write Once
• BD-RE Blu-ray Disc re-writable
• an optical disc device for writing and reproducing data to and from the BD-RE is provided with an optical pickup 11 for writing and reproducing a signal to and from an optical disc 10.
• a video disc recorder (VDR) system 12 for processing a signal from the optical pickup 11 as a reproduced signal, or demodulating and processing an external data stream into a writable signal suitable for writing is also shown.
• An encoder 13 for encoding, and providing an external analog signal to the VDR system 12 is also provided in the optical disc device.
• the BD-RE is divided into, and assigned a lead-in area (LIA), a data area, and a lead-out area (LOA).
• the data area is provided with a user data area, and an inner spare area (ISA) and an outer spare area (OS A) assigned to a fore end and a rear end of the user data area, respectively.
• the LIA is provided with a defect management area (DMA) having disc definition structure (DDS) information and a defect list (DFL) information for managing a defective area.
• DMA defect management area having disc definition structure (DDS) information and a defect list (DFL) information for managing a defective area.
• the VDR system 12 of the optical disc device writes the external data in clusters corresponding to an ECC Block unit having a predetermined recording size after encoding and demodulating the external signal into a signal suitable for writing.
• the VDR system 12 carries out a series of replacement writing operations in which the clusters of data written on the defective area are written on one of the spare areas, e.g., on the inner spare area (ISA) in place of the defective area.
• ISA inner spare area
• the VDR system 12 also writes and manages the defect list information for accessing the data written in the spare area during replacement writing operations.
• the defect list information has a predetermined recording size, e.g., a fixed recording size of four clusters, and includes a plurality of defect entries (Defect_Entry #1 ⁇ #n) each with written location information about the respective defective area, and written location information about the data written in the spare area during replacement.
• the VDR system 12 can prevent a data writing error in advance by writing the clusters of data written on the defective area on the spare area in place of the detective area, and also reproducing the data from the spare area.
• the Blu-ray Disc Write-Once is another type of high density optical disc that is being developed where a high quality of data can be recorded and reproduced to and from the disc.
• data can be written only once on the BD-WO and is not re-writable on the BD-WO.
• the BD-WO can be read repeatedly.
• the BD-WO is useful where the rewritability of data on a recording medium is not desired or essential.
• the present invention achieves one of more of these and other advantages not realized by the related art.
• An object of the present invention is to provide a method for managing a defective area on an optical recording medium in which defect list information, or temporary defect list information for managing a defective area of a high density optical disc, such as a BD-WO, is written and managed more effectively and efficiently.
• the method of the present is directed at reducing unnecessary loss of data recording capacity due to the defect list information or the temporary defect information.
• One or more of these and other aspects of the invention are accomplished by a method for managing an optical recording medium having at least one temporary defect management area, and at least one spare area in a data area, the method comprising replacing data written in a defective area by writing the data written in the defective area to the at least one spare area as replacement data if the defective area within the data area is detected; and writing defect management information in the at least one temporary defect management area for access to the data written in the spare area, wherein the defect management information for access to the data written in the spare area is identified by at least one navigation pointer.
• One or more of these and other aspects of the invention are accomplished by a method for managing an optical recording medium having at least one temporary defect management area, and at least one spare area in a data area, the method comprising replacing data written in a defective area of the data area in the at least one spare area in place of the defective area as replacement data if the defective area within the data area is detected; and producing defect list information and disc definition structure information in the at least one temporary defect management area for access to the data written in the spare area as replacement data, and managing the defect list information and the disc definition structure information, wherein the defect list information includes defect entries corresponding to the replacement data actually written, and the disc definition structure information includes writing location information of a next available sector of the spare area for replacement writing as at least one navigation pointer.
• a recording medium comprising at least one spare area within a data area; a temporary defect management area for managing a defective area within the data area; a portion of the at least one spare area capable of storing replacement data, wherein data written in the defective area is replaced by writing the data written in the defective area to the portion of the at least one spare area as the replacement data; and defect management information in the at least one temporary defect management area for access to the data written in the portion of the at least one spare area, wherein the defect management information for access to the data written in the spare area is identified by at least one navigation pointer.
• a recording medium comprising at least one spare area in the data area; a temporary defect management area for managing a defective area within the data area; a portion of the at least one spare area capable of storing replacement data, wherein data written in the defective area is replaced by writing the data written in the defective area to the portion of the at least one spare area as the replacement data; and defect list information and disc definition structure information in the temporary defect management area for access to the data written in the portion of the at least one spare area, wherein the defect list information includes defect entries corresponding to the replacement data actually written, and the disc definition structure information includes writing location information of a next available sector of the at least one spare area for replacement writing as at least one navigation pointer.
• an apparatus for managing an optical recording medium having at least one temporary defect management area, and at least one spare area in a data area comprising a combination of components for replacing data written in a defective area by writing the data written in the defective area to the at least one spare area as replacement data if the defective area within the data area is detected; and for writing defect management information in the at least one temporary defect management area for access to the data written in the spare area, wherein the defect management information for access to the data written in the spare area is identified by at least one navigation pointer.
• an apparatus for managing an optical recording medium having at least one temporary defect management area, and at least one spare area in a data area comprising a combination of components for replacing data written in a defective area of the data area in the at least one spare area in place of the defective area as replacement data if the defective area within the data area is detected; and for producing defect list information and disc definition structure information in the at least one temporary defect management area for access to the data written in the spare area as replacement data, and managing the defect list information and the disc definition structure information, wherein the defect list ihforniatiori includes defect entries corresponding to the replacement data actually written, and the disc definition structure information includes writing location information of a next available sector of the spare area for replacement writing as at least one navigation pointer.
• FIG. 1 is a schematic of an optical disc device of the related art
• FIG. 2 is a block diagram of a method of the related art for managing a defective area on a BD-RE;
• FIG. 3 is a block diagram of an optical disc recording and reproducing device according to an embodiment of the present invention.
• FIGS. 4 A and 4B illustrate a structure of a single layer BD-WO and a dual layer BD-WO optical disc, respectively, according to an embodiment of the present invention
• FIG. 5 is a block diagram of a method for managing a defective area on a
• FIG. 6 is a block diagram of a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 7 is a block diagram of a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention.
• FIG. 8 is a block diagram of temporary defect list information written and managed according to a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 9 is a block diagram of temporary defect list information written and managed according to a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention.
• FIG. 10 is a block diagram of temporary defect list information written and managed according to a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 11 is a block diagram of temporary defect list information written and managed according to a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 12 is a block diagram showing defect definition structure information written and managed according to a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 13 is a block diagram showing defect definition structure information written and managed according to a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 14 is a block diagram showing defect definition structure information written and managed according to a method for managing a defective area on a single layer BD-WO in accordance with a preferred embodiment of the present invention
• FIG. 15 is a block diagram showing defect definition structure information written and managed according to a method for managing a defective area on a dual layer BD-WO in accordance with a preferred embodiment of the present invention.
• FIG. 16 is a block diagram showing temporary defect list information written and managed according to a method for managing a defective area on a single layer BD-WO and a dual layer BD-WO in accordance with another preferred embodiment of the present invention.
• FIG. 3 is a block diagram of an optical disc recording and reproducing device 20 according to a preferred embodiment of the present invention.
• the optical disc recording and/or reproducing device 20 (hereinafter optical disc recording/reproducing device) includes an optical pickup 22 for writing and reading data to and from an optical recording medium 21, a servo unit 23 for controlling the pickup 22 to maintain a distance between an objective lens of the pickup 22 and the recording medium 21 and for tracking relevant tracks on the recording medium 21, a data processor 24 for processing and supplying input data to the pickup 22 for writing, and for processing data read from the recording medium 21, an interface 25 for -exchanging data and/or commands with -any external host 30, a memory or storage 27 for storing information and data therein including defect management data associated with the recording medium 21, and a microprocessor or controller 26 for controlling the operations and elements of the recording/reproducing device 20.
• optical disc recording/reproducing device includes an optical pickup 22 for writing and reading data to and from an optical recording medium 21, a servo unit 23 for controlling the pickup 22 to maintain a distance between an objective lens of the pickup 22 and the recording medium 21 and for tracking relevant tracks on the recording medium 21, a data processor 24 for processing and
• Data to be written or read to or from the recording medium 21 may also be stored in the memory 27. All the components of the recording/reproducing device 20 are operatively coupled.
• the recording medium 21 is a recording medium of write-once type, e.g., such as a BD-WO.
• FIGS. 4A and 4B illustrate a structure of a single layer BD-WO and a dual layer BD-WO optical disc, respectively, according to an embodiment of the present invention.
• the BD-WO can have one or two recording layers.
• a BD-WO having only a single recording layer includes a single recording layer composed of a lead-in area (LIA), a data area, and a lead-out area (LOA), and is referred to herein as a single layer disc.
• a dual layer BD-WO includes two recording layers (Layers 0 and 1) and is referred to hereinafter as a dual layer disc.
• the first recording layer (Layer 0) includes a LIA, a data area, and an outer zone.
• the second recording layer (Layer 1) includes a LOA, a data area and an outer zone, and is referred to herein as a dual layer disc.
• a data writing occurs in the direction shown with the dotted arrow in the dual layer disc.
• the single layer disc can have a capacity of 23.3, 25.0 or 27.0 Gbytes, whereas the dual layer disc can have a capacity of 46.6, 50.0, or 54.0 Gbytes.
• FIG. 5 is a block diagram of a method for managing a defective area on a BD-WO in accordance with an embodiment of the present invention.
• a defective area on a BD-WO is managed in a manner similar to the methods utilized for BD-RE, in which a new Temporary DFL (TDFL) having a fixed recording size of four clusters is defined for application to the BD-WO.
• TDFL Temporary DFL
• first to third defect entries D_Ent #1 ⁇ #3 produced during a process of replacement writing in the middle of a first data writing operation are written and managed as first temporary defect list (lst_TDFL) information of four clusters.
• a fourth entry D_Ent #4 produced during a process of replacement writing in the middle of a second data writing operation is added, so as to write and manage first to fourth defect entries D_Ent #1 ⁇ #4 as second temporary defect list (2nd_TDFL) information of four clusters.
• a fifth entry D_Ent #5 produced during a process of replacement writing in the middle of a third data writing operation is added, so as to write and manage first to fifth defect entries D_Ent #1 ⁇ #5 as third temporary defect list (3rd_TDFL) information of four clusters.
• FIG. 6 is another block diagram of a method for managing a defective area on a BD-WO in accordance with a preferred embodiment of the present invention.
• an exemplary BD-WO includes a lead-in area (LIA), a data area, and a lead-out area (LOA).
• the data area also includes a user data area with Physical Sector Numbers (PSN) and Logical Sector Numbers (LSN) provided together, and non-user data areas each only having physical sector numbers given thereto.
• PSN Physical Sector Numbers
• LSN Logical Sector Numbers
• the non-user data area includes a spare area, e.g., an outer spare area (OSA) for writing data in place of a defective area, and a Temporary Defect List Area (TDFL Area) for writing management information on the defective area and the data written on the spare area.
• OSA may be assigned to an ISA, or the ISA may be provided additionally in both locations.
• TDFL area may be assigned to a position adjacent to the OSA, or provided additionally in both locations.
• the optical disc recording/reproducing device 20 of the optical disc device described with reference to FIG. 3 writes data continuously on a predetermined writing sector in the user data area when writing data.
• the predetermined data writing sector may be set as a Defect Verify Unit (DVU) of a recording size equivalent to one, or more than one, physical track or cluster- for detecting the defective area during data writing.
• DVD Defect Verify Unit
• the optical disc recording/reproducing device 20 After writing the data on the DVU, the optical disc recording/reproducing device 20 then repeats a series of defective area detecting operations in which the optical disc recording/reproducing device 20 reproduces the data written in the DVU, and verifies the data being written regularly. For example, after writing a first to a fifth cluster (clusters #1 ⁇ #5) continuously as a first defect verify unit DVU #1 (S10), the optical disc recording/reproducing device 20 reproduces the data progressively written on the DVU #1, and detects any defective area.
• a fifth cluster clusters #1 ⁇ #5
• S10 first defect verify unit
• the data in the cluster #2 stored in the memory 27 or other storage of the optical disc recording/reproducing device 20 is temporarily written on the OSA in place of the defective area (S12).
• the cluster #2 may be written on the OSA starting from either the rear end or the fore end thereof.
• the optical disc recording/reproducing device 20 reproduces the data written on the DVU #1 starting from the cluster #3 after the writing operation. For example, and as shown in FIG. 6, if there is a defective area in the cluster #4 (SI 3), the data in the cluster #4 stored in the memory 27 or other storage of the optical disc recording/reproducing device 20 is temporarily written on the OSA in place of the defective area (SI 4).
• the DVU #1 will eventually have clusters #1, #3, and #5 written thereon regularly, and two defective areas.
• the OSA has cluster #2 and #4 written thereon in place of the respective defective areas.
• the management information can be written and managed as a TDFL in one example.
• the TDFL may include a plurality of defect entries Defect_Entry #1 . . .#m, each having a first physical sector number of the defective area (PSN of Defective), a first physical sector number of a data area where the replacement data for the defective area is written (PSN of Replacement), and a cross-reference to one another.
• the TDFL info includes a first physical sector of each TDFL, e.g., PSN of TDFL #1, a spare area size and any other management information as needed.
• Both the TDDS information and the TDFL information are transferred and written in a defect management area (DMA) of the BD-WO as defect management area information when the BD-WO is to be finalized or at some designated time.
• DMA defect management area
• the optical disc recording/reproducing device 20 writes in the TDFL area of the BD-WO.and manages the temporary defect list information within a predetermined recording size of smaller than four clusters, e.g., such as one cluster recording size. For example, as shown in FIG. 8, the optical disc recording/reproducing device 20 writes in the TDFL area and manages the first to third defect entries D_Ent #1 ⁇ #3 produced from a replacement writing process during a first data writing operation as first temporary defect list (lst_TDFL) information of one cluster.
• the first temporary defect list (lst_TDFL) information also includes writing location information (usable_Add) of the area of the spare area that is available for successive rewriting.
• writing location information of the ISA having a possible, successive replacement writing location is included in the first temporary defect list (lst_TDFL).
• This writing location information serves-as a navigation pointer directing the process of defect management to the appropriate locations of the data area.
• the optical disc recording/reproducing device 20 then adds a fourth defect entry D_Ent #4 produced from a replacement writing process during a second data writing operation to form first to fourth entries D_Ent #1 ⁇ #4.
• the optical disc recording/reproducing device 20 writes in the TDFL area and manages the first to fourth entries D_Ent #1 ⁇ #4 as a second temporary defect list (2nd_TDFL) information of one cluster.
• the second temporary defect list (2nd_TDFL) information also includes new writing location information for the ISA successive replacement writing location if it is available.
• the optical disc recording/reproducing device 20 then adds a new fifth defect entry D_Ent #5 produced from a replacement writing process during a third data writing operation to form first to fifth entries DJEnt #1 ⁇ #5.
• the optical disc recording/reproducing device 20 then writes in the TDFL area and manages the first to fifth entries D_Ent #1 ⁇ #5 as a third temporary defect list (3rd_TDFL) information of one cluster.
• the third temporary defect list (3rd_TDFL) information also includes new writing location information for the ISA successive replacement writing location if it is available.
• FIG. 9 shows an example of writing defect management information on a
• the optical disc recording/reproducing -device 20 when one of the spare areas, e.g., an ISA, is full with replacement data.
• the optical disc recording/reproducing -device 20 writes writing location information (usable_Add) for successive replacement writing therein (if possible) on the defect list.
• the optical disc recording/reproducing device 20 writes replacement data in an opposite direction of the data replacement writing direction in the OSA in which the data is written, e.g., starting from an outer side to an inner side.
• the recording size of the TDFL newly produced is enlarged to two clusters from that time point forward according to a first embodiment of the present invention. For instance, when the third TDFL (TDFL #3) of one cluster size is full with the TDFL information written as discussed above, the allocated size of each subsequent TDFL is increased to, e.g., 2 clusters, to accommodate the increase in the TDFL information. In this manner, the allocated size of each TDFL may be increased further, as needed, e.g., from 2 to 4 clusters in recording size.
• the TDFL information having the new defect entries written thereon, and the TDFL information written previously are grouped as a first group (Group #1) arid a second grou (Group #2).
• Identification information for identifying the first group and the second group e.g., the index group (Index_Group) information, is included with the TDDS information which is written in a designated TDDS area of the BD-WO, e.g., the TDDS area in the LIA shown in FIG. 6.
• the optical disc device can carry out regular defect area management and replacement writing operation with reference to the defect entries in the TDFL information and writing location information of the successive spare area locations for replacement writing (if available).
• the optical disc device can write and manage the TDFL information in the smallest possible recording size.
• the TDFL information can be written in any particular area on the recording medium, and transferred to a permanent defect management area (DMA) on the BD-WO as DFL information.
• DMA permanent defect management area
• the TDDS information can also be assigned to any particular area on the recording medium, and transferred to the DMA as DDS information.
• the present invention for writing and managing the minimum defect entries and the writing location information for successive replacement writing locations is applicable not only to the BD-WO described hereinabove and shown in the accompanying figures, but also a variety of other recording media, e.g., such as BD-RW
• the minimum defect entries, and the identification information for indicating the end or termination of writing of the defect entries e.g., such as defect list terminator (Defect List Terminator) information of 8 byte recording size, are written and managed in the first TDFL (TDFL #1).
• the writing location information of the successive replacement writing locations in the spare area (if available) is written and managed in- the -first TDDS (TDDS #1) information corresponding to the first TDFL information.
• the writing location information (lst_usable_spare_cluster) corresponding to a first sector of the first successive cluster available for replacement writing and the first physical sector number (the PSN of the first sector) for access to the first TDFL information (PSN of TDFL #1) are included in the first TDDS information. Also, as shown in FIG. 13, when the new second TDFL information
• TDFL #2 is renewed, new defect entries, and defect list terminator information indicating the termination of the writing of the defect list are written in the second TDFL information (TDFL #2).
• the writing location information (lst_usable_spare_cluster) corresponding to a first sector of the first cluster of the spare area available for successive replacement writing and the first physical sector number for access to the second TDFL information (PSN of TDFL #2) are included in the second TDDS corresponding to the second TDFL information.
• the TDDS information includes a physical sector number for access to the newly written TDFL information (PSN of TDFL #k) and writing location information (lst_usable_spare_cluster) corresponding to a first sector of the first cluster of the spare area available for successive replacement writing.
• the TDDS includes writing location information (lst_usableJ_SAO_cluster) corresponding to a first sector of the first cluster of the ISA available for successive replacement writing, and writing location information (lst_usable_OSA0_cluster) corresponding to a first sector of the first cluster of the OSA available for successive replacement writing.
• the TDDS information includes writing location information (lst_usable_ISA0_cluster, and lst_usable_ISAl_cluster) corresponding to first sectors of the first clusters of the first and second inner spare areas available as successive replacement writing sectors, and writing location information (lst_usable_OSA0_cluster, and lst_usable_OSAl_cluster) corresponding to first sectors of the first clusters of the first and second outer spare areas available as successive replacement writing sectors for defect management.
• These writing location information pieces can be written in the order shown or in different order.
• the TDFL information includes the writing location information (usable_Add_ISA) identifying a first sector of a first cluster of the ISA available for successive replacement writing and the writing location information (usable_Add_OSA) identifying a first sector of a first cluster of the OSA available for successive-replacement- writing for defect management.
• the TDFL information includes writing location information (usable_Add_ISA0, and usable_Add_ISAl) identifying first sectors of the first clusters of the first and second inner spare areas available as successive replacement writing sectors, and writing location information (usable_Add_OSA0, and usable_Add_OSAl) identifying first sectors of the first clusters of the first and second outer spare areas available for successive replacement writing for defect management for both inner and outer layers, respectively.
• writing location information pieces can be written in the order shown or in other order.
• the writing location information identifying the available sector in one or more spare areas can be written in the TDFL and the TDDS if desired.
• the optical disc recording and reproducing device 20 can carry out regular defect area management and replacement writing operations with reference to the defect entries in the TDFL information and writing location information in the TDDS information and/or the TDFL information, and can write and manage the TDFL information in the smallest possible recording size of the spare areas.
• the method for managing a defective area on a high density optical disc of writable once type permits more efficient writing and management of defect list information or temporary defect list information for managing the defective area in a minimum recording size, by writing a data in a defective area existing on a high density optical disc, such as a BD-WO, in a spare area in place of the defective area, producing defect list information for access to the data replacement written in the spare area and writing in a particular area for management, wherein defect entries actually corresponding to the replacement written data, and writing location information of the spare area successive replacement writing thereon are written and managed as defect list information for management, or the writing location information of which replacement writing is possible is written and managed in defect definition structure information.
• a high density optical disc such as a BD-WO

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• Engineering & Computer Science (AREA)
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• Signal Processing For Digital Recording And Reproducing (AREA)
• Optical Recording Or Reproduction (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
• Holo Graphy (AREA)

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• 2003
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  • 2003-10-01 CN CNB200380109266XA patent/CN1333390C/zh not_active Expired - Lifetime
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