Classifications

• • 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
• • 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
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B2020/10861—Finalising a record carrier after a recording operation, e.g. to ensure compatibility with a ROM medium
• • 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
• • 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
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B2220/00—Record carriers by type
  • G11B2220/20—Disc-shaped record carriers
  • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
  • G11B2220/215—Recordable discs
  • G11B2220/218—Write-once discs
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B2220/00—Record carriers by type
  • G11B2220/20—Disc-shaped record carriers
  • G11B2220/23—Disc-shaped record carriers characterised in that the disc has a specific layer structure
  • G11B2220/235—Multilayer discs, i.e. multiple recording layers accessed from the same side

Definitions

• the present invention relates to a recording medium, and a
• BD Blu-ray Disc
• optical recording solution capable of storing much more
• defective recording medium e.g., Blu-ray Disc
• the present invention is directed to a
• An object of the present invention is to provide a recording medium having a structure for managing defects
• recording medium including a plurality of recording layers
• second area is in a location physically corresponding to
• the first defect management information may be indicative
• NTD non-re-allocatable defect
• the second defect management information may be indicative of
• PBA possibly bad area
• controller for detecting a defect on a first area of a
• the management area wherein the second area is in a
• the apparatus may further comprise: a recording unit for
• controller controls the recording unit to record the first
• a recording medium equipped with a plurality of record layers comprising: a recording medium management
• first area which includes a defect, of a first layer of a
• the management area includes
• a recording medium including a management area
• the management area including at least one
• the management area further includes status
• the status information may indicate whether a valid defect
• the status information may indicate whether a valid defect
• defect list is recorded in the defect list position, dummy
• the status information indicating a record status of the defect list position
• FIG. 1 shows a structure of a recording medium according
• FIG. 2 shows the list of defects (i.e., a defect list)
• FIG. 3 is a conceptual diagram illustrating a method for
• FIG. 4 is a block diagram illustrating an optical
• FIG. 5 is a flow chart illustrating a method for
• FIG. 6 shows a structure of a recording medium according
• FIG. 7 shows status information of a defect list according
• FIG. 8 shows status information of a defect list according
• FIG. 9 is a conceptual diagram illustrating a method for
• FIG. 10 shows a first embodiment of management information recorded in a management area when the recording medium
• FIG. 11 shows a second embodiment of management
• recording medium includes four recording layers, and
• FIG. 12 shows a third embodiment of management information
• FIG. 13 shows a fourth embodiment of management
• recording medium includes four recording layers, and
• FIG. 14 is a flow chart illustrating a method for
• FIG. 15 is a flow chart illustrating a method for
• a recording medium for use in the present invention is
• a data-recorded recording medium or all recordable mediums for example, an optical disc, and a
• optical discs for example, a
• management area is indicative of a specific
• DMA Defect Management Area
• TDMA Temporary DMA
• the DMA and the TDMA provide defect and/or recording
• the recording medium may include
• TDMA includes management information of the recording
• the DMA includes final management information of the recording medium when the recording medium is closed.
• the defect list (DFL) is indicative of a specific list
• the defect list may be stored in the management area.
• the TDMA may store a
• Temporary DFL including information of defect (s)
• the DMA may store the
• defect list including management information associated
• FIG. 1 shows a structure of a recording medium according
• present invention can be applied to all the recording
• each of the four recording layers in the disc sequentially includes an inner zone, a data zone, and an
• a user data area on which user data is recorded and an Inner Spare Area (ISA) and an Outer Spare Area (OSA) for
• mentioned spare area may not be assigned to the data zone.
• the DMA may be assigned to the inner and outer zones. For example,
• the inner zone of each recording layer may
• recording layer may include a DMA3 and a DMA4 as necessary.
• write-once disc may further include a TDMA along with the
• the TDMA stores
• the defect list which is stored in the management area.
• the defect may be recorded in the defect list which is stored in the management area. For example, the defect
• management information may include position information of
• a defective area e.g. defective cluster
• information may include specific information indicating a
• a variety of defect types may be used, for example, a RAD
• the RAD type identifies a defective area with a replacement address assigned.
• the NRD type identifies a defective
• the PBA (Possibly Bad Area) indicates an area on the disc
• Defective area information of the first RAD type is
• defective area of the second RAD type data is recorded in an original location (i.e. the defective area), and the
• defect type may be defined differently from the above-
• the defect type of the write-once disc may be classified
• the RAD type identifies a single defective
• replacement address i.e., a spare/alternative location
• the CRD type identifies contiguous range of defective or
• overwritten areas e.g. contiguous range of defective or
• the NRD type identifies a single defective
• FIG. 2 shows the defect list according to the present
• the defect list includes the list of
• DFL defect list
• the DFL entry includes a "Status 1" field for indicating first status information of the entry, a
• recording layer may be affected by the defect.
• the optical beam may be any optical beam.
• FIG. 3 is a conceptual diagram illustrating a method for
• the reference character "A" shows a
• the first embodiment (A) shows a
• the first embodiment (A) has a defective area (A3) .
• the above-mentioned PBA may be registered in
• the reference character "B" shows a
• the second embodiment (B) shows a
• the second embodiment (B) determines areas (BO, B2 ,
• the PBA is registered in the defect list.
• the reference character "C" shows a
• the third embodiment (C) shows a
• the third embodiment (C) determines
• FIG. 4 is a block diagram illustrating an optical
• a pickup unit 11 includes a pickup unit 11, a servo unit 14, a
• the pickup unit 11 reads original data recorded in a disc,
• processor 13 receives a reproduction signal from the
• memory 15 stores information needed for
• the microprocessor 16 controls overall operations of the
• a recording/reproducing unit 20 is also called a recording/reproducing unit 20.
• recording/reproducing unit reads data from the disc 30 or
• controller 12 and transmits the read data to the decoder.
• the recording/reproducing unit acts as a playback unit (or
• a reader capable of reading data from the disc or storage.
• recording/reproducing unit receives the encoded signal from the AV encoder 18, and records video and audio data
• the recording/reproducing unit 10 may be connected to
• data at any time For example, data having persistency
• the storage 19 may act as a storage unit for storing data
• a recording medium e.g., BD or HD-DVD.
• the data associated with the recording medium is generally
• the recording medium and is then stored in the storage 19.
• the controller 12 controls all the constituent components
• controller 12 and the microprocessor 16 may be separated
• controllerl2 and the microprocessor 16 may
• the controller 12 may be operated by a single control unit.
• the controller 12 is not limited to be operated by a single control unit.
• control unit and/or the microprocessor 10 will hereinafter be referred to as a control unit.
• control unit may be comprised of
• the controller may be called a host, other devices (e.g., the recording/reproducing
• the host and the sync device are connected to each other
• PC personal computer
• the AV decoder 17 receives data from the recording medium
• the AV decoder transmits the decoded result to the user.
• 17 may be comprised of several decoders according to data
• the AV encoder 18 converts an input signal into a specific
• format signal (e.g., an MPEG2 transport stream) upon
• control unit controls the control unit
• control unit records first
• control unit records second
• FIG. 5 is a flow chart illustrating a method for
• recording/reproducing unit determines whether at least one
• recording layer of the recording medium includes the
• recording layer among several recording layers may include
• the defective area or several recording layers may also be included.
• step S20 the control unit creates and records management
• control unit also creates and
• the defective area is registered as RAD or
• control unit records data currently being recorded in the
• defect management information may be recorded in the form
• the defect list In details, the second defect management information for - area placed at a location physically
• the present invention registers the area
• the present invention can improve the present invention
• FIG. 6 shows a structure of a recording medium according
• the TDMA is
• the recording medium according to the present disclosure As described above, the recording medium according to the present disclosure
• present invention may include the DMA and the TDMA
• the TDMA is generally
• TDMAs classified into two kinds of TDMAs, i.e., a TDMAO and
• the TDMAO having a
• the additional TDMA(s) may be additionally
• the additional TDMA(s) may be allocated
• each TDMA includes a TDDS (Temporary Disc
• TDFL Temporal Defect List
• a current recording mode is determined to be a
• SRRI Sequential Recording Range Information
• a current recording mode is determined to be a random recording mode
• the TDDS includes information about the format and status
• the TDFL includes information about a
• the write-once recordable disc is unable to record data in
• the TDMA is used to update the defect
• the latest management information in the TDMA is recorded as the final management information on
• each inner zone of each of four recording layers includes a DMA2 and
• each outer zone thereof includes a DMA3 and a
• the transferred management information is used as the final management information of the disc.
• the TDMAO includes an access indicator indicating a TDMA
• TDMAO, TDMAl, and TDMA2 are allocated to the disc, and
• FIG. 7 shows status information of the defect list
• a disc definition structure (DDS) and a defect list (DFL) A disc definition structure (DDS) and a defect list (DFL)
• the DDS is repeatedly recorded
• the DFL is recorded in the
• the DFL can be divided into several sub-areas (e.g., seven sub- areas) .
• the DFL can be repeatedly recorded in each sub-areas (e.g., seven sub- areas) .
• the sub-area may
• position of DFL also called a “DFL position”
• the DMA includes seven DFL positions.
• FIG. 7(A) partially shows a disc definition structure
• the contents are included in the DDS.
• the byte position in the data frame of the DDS includes
• DFL position information of a defect list
• invention is indicative of specific information indicating the position of the DFL recorded in the management area.
• DFL position including a valid defect list (DFL) in a DMA
• the first PSN information does not include
• the first PSN of the above area is set in the
• the DFL status information may be specific
• the DFL status information may be
• the data frame of the DDS may indicate the above-mentioned DFL status information.
• FIG. 7(b) shows the DFL status information of FIG. 7 (a)
• bitmap hereinafter be referred to as a bitmap in the present
• one bit (i.e., 1 bit) is allocated to each DFL position contained in the DMA, and each
• allocated bit indicates whether a valid DFL is recorded at
• the DFL status information can be represented by
• the DFL status information may correspond to status
• among the 1 byte may correspond to status information for
• a bit "b2" may correspond to
• bit "b3” may correspond to status information for the "4 th position of DFL"
• a bit "b4" may correspond to status
• DFL and a bit "b ⁇ " may correspond to status information
• bit "b7" is a
• bit “b7" may include "1 st
• FIG. 8 shows status information of the defect list
• FIG. 8 (a) shows a specific case in which DFL status information is contained in the DDS in the same
• FIG. 8 (b) shows a specific
• the present invention indicates whether a valid DFL has been recorded at each DFL position, indicates whether
• a bit "blbO" from among the above 2 bytes indicating the DFL status information may correspond to
• a bit "b5b4" may correspond to status information
• a bit “b7b6" may correspond to
• a bit “bllblO" may correspond to status information
• a bit “bl3bl2" may correspond to status information for 1 st position of DFL.
• bit X ⁇ bl5bl4" is a reserved area.
• FIGS. 7 and 8 may be contained in a
• FIG. 9 shows embodiments illustrating a method for
• Method 1 shows an exemplary case in which the DFL status information of each DFL position is
• the DFL status information may be set to "0". Needless to
• the DFL status information is set
• the DFL status information is set to "01b". If the above
• DFL status information is set to "00b".
• DFL status information may be set to different numbers
• the "Method 1" may allocate 2 byte for the DFL status
• Method 2 may allocate 4 bytes for
• SRM recording mode
• RRM recording mode
• SBM Space Bit-Map
• FIG. 10 shows a first embodiment of management information
• the "cluster 1" includes
• the “cluster 2" includes DDS+SBMl/SRRI, the "cluster 2" includes DDS+SBMl/SRRI, the
• cluster 3 includes DDS+SBM2/SRRI, and the "cluster 4"
• cluster 5" to “cluster 8" may include the SBM in the
• cluster 5" includes DDS+SBM3/SRRI
• the “cluster 6” includes DDS+SBM2/SRRI
• the “cluster 7" includes-
• the “cluster 8" may include the same management
• the clusters 9-16 are set to
• the clusters 17-32 are indicative of the
• DFL first position i.e., DFL first position
• the clusters 33-48 correspond to the DFL second
• the clusters 49-64 correspond to the DFL third position.
• the clusters 65-80 correspond to the DFL fourth
• the clusters 81-96 correspond to the DFL fifth
• the clusters 97-112 correspond to the DFL sixth
• the clusters 113-128 correspond to the DFL
• the DFL may be selectively copied in
• DFL first PSN (P_DFL) information DFL first PSN (P_DFL) information
• the recording/reproducing device 10 can recognize that the
• invention can check status of individual DFL positions.
• the control unit may store or update the DFL status
• FIG. 11 shows a second embodiment of management information recorded in a management area when the
• recording medium includes four recording layers, and
• a DFL first position includes an
• a DFL second position includes a valid DFL
• FIG. 11 (b) shows characteristics of information recorded
• the DFL first position includes an invalid DFL, such that
• the DFL second position includes a
• the DFL first position includes an invalid DFL, such that
• the DFL second position includes a
• DFL bitmaps For example, m the case of recording the DFL in the DMA,
• FIG. 12 shows a third embodiment of management information
• the invalid DFL is recorded at
• FIG. 12 (b) shows characteristics of information recorded
• the DFL first and second positions include invalid DFLs
• third position includes a valid- DFL, such that it is set
• seventh position include “00h” " user data, such that "0b”
• the DFL first and second positions include invalid DFLs
• third position includes a valid DFL, such that it is set to "lib”.
• the DFL seventh position are empty areas having no data
• the recording/reproducing device 10 according to the
• FIG. 13 shows a fourth embodiment of management
• DFL is recorded in the DFL second position, the DFL fourth
• FIG. 13 (b) shows characteristics of information recorded
• Method 1 can be represented as follows.
• the DFL first, third, fifth, and sixth positions include
• the DFL second, fourth, and seventh positions include
• the DFL first, third, fifth, and sixth positions include valid DFLs, respectively, such that they are set to "lib”.
• the DFL second, fourth, and seventh positions include invalid DFLs, such that "10b" can be represented in DFL
• the recording/reproducing device 10 according to the
• DMA is indicative of the DFL first position from Cluster
• FIG. 14 is a flow chart illustrating a method for
• the recording/reproducing device 10 checks a valid DFL
• FIG. 15 is a flow chart illustrating a method for
• the recording/reproducing device 10 checks the valid DFL
• the recording/reproducing device 10 can more precisely determine the position including the DFL using

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• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)
• Optical Recording Or Reproduction (AREA)
• Management Or Editing Of Information On Record Carriers (AREA)

Priority Applications (3)

Applications Claiming Priority (4)

Publications (1)

Family

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Family Applications (1)

Country Status (4)

Families Citing this family (2)

Citations (3)

Family Cites Families (4)

• 2007
  • 2007-06-05 US US12/227,603 patent/US20090310451A1/en not_active Abandoned
  • 2007-06-05 JP JP2009514201A patent/JP2009540480A/ja active Pending
  • 2007-06-05 EP EP07746833A patent/EP2044590A1/en not_active Withdrawn
  • 2007-06-05 WO PCT/KR2007/002724 patent/WO2007142451A1/en not_active Ceased

Patent Citations (3)

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