WO2005088636A1 - Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium - Google Patents

Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium Download PDF

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Publication number
WO2005088636A1
WO2005088636A1 PCT/KR2005/000593 KR2005000593W WO2005088636A1 WO 2005088636 A1 WO2005088636 A1 WO 2005088636A1 KR 2005000593 W KR2005000593 W KR 2005000593W WO 2005088636 A1 WO2005088636 A1 WO 2005088636A1
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WO
WIPO (PCT)
Prior art keywords
pac
segment
recording medium
cluster
pac cluster
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2005/000593
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English (en)
French (fr)
Inventor
Yong Cheol Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Priority to CA2559932A priority Critical patent/CA2559932C/en
Priority to JP2007503820A priority patent/JP4707710B2/ja
Priority to AU2005222281A priority patent/AU2005222281B2/en
Priority to EP05710868.0A priority patent/EP1726012B1/en
Priority to BRPI0508869-0A priority patent/BRPI0508869A/pt
Publication of WO2005088636A1 publication Critical patent/WO2005088636A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • G11B7/007—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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording 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
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00702—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are recorded on the recording 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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Definitions

  • the present invention relates to managing physical access control (PAC) and recording data,
  • media containing PAC and recording data for example, high density optical discs, such as
  • Blu-ray Disc and apparatus and methods for recording and/or reproducing data to and/or
  • optical discs may be used for recording a large quantity of data.
  • HD-DVD high density optical media
  • BD ray Disc
  • BD further includes a rewritable Blu-ray disc (BD-RE), Blu-ray disc writable once (BD-WO),
  • BD-RE rewritable Blu-ray disc
  • BD-WO Blu-ray disc writable once
  • capabilities may have difficulty interacting with a medium that has interacted with a drive including at least one capability from a subsequent set of capabilities.
  • a medium such as a high density optical disc
  • segment information identifying at least one segment in a user data area, where segments of a
  • a medium such as a high density optical disc
  • segment information wherein at least one segment in a first PAC cluster may overlap with at least one segment in a first PAC cluster
  • Example embodiments of the present invention provide physical access control (PAC) cluster
  • segment information recorded thereon, in order to improve data protection
  • optical disc and apparatus and methods for managing a PAC including segment information.
  • the present invention is directed to a recording medium having a data structure for managing a data area of a recording medium including at least one physical
  • PAC access control
  • each PAC cluster including
  • segment information identifying at least one segment in a user data area, wherein segments of
  • the present invention is directed to a method of controlling
  • the present invention is directed to a method of recording on a
  • recording medium including identifying a first and second physical access control (PAC)
  • the present invention is directed to a method of reproducing from a recording medium including identifying a first and second physical access control (PAC)
  • PAC physical access control
  • the present invention is directed to an apparatus for recording to
  • cluster including a first and second physical access control (PAC) cluster, wherein when at least
  • At least one segment in the data area defined by the first PAC cluster overlaps with at least one
  • FIGs. 1A and IB illustrate PAC zones on a high density optical disc in accordance with an
  • FIG. 2 illustrates an INFO2 zone and INFO1 zone on a high density optical disc in
  • FIG. 3 illustrates a PAC recorded on a high density optical disc in accordance with an
  • FIG. 4 illustrates a PAC on a high density optical disc in accordance with an example
  • FIG. 5 illustrates an "Unknown PAC Rules" field in accordance with an example
  • FIG. 6 illustrates segment zones on a high density optical disc in accordance with an example
  • FIG. 7 illustrates a PAC zone on a high density optical disc in accordance with an example
  • FIG. 8 illustrates segment zones managed by a plurality of PAC zones on a high density
  • optical disc in accordance with an example embodiment of the present invention.
  • FIG. 9 illustrates an optical recording/reproducing apparatus in accordance with an example embodiment of the present invention.
  • PAC physical access control
  • PAC physical access control
  • PAC PAC
  • PAC information PAC information
  • PAC control information PAC control information
  • a zone within the disc on which the PAC is recorded may be referred to as a
  • PAC zone and the PAC being recording in the PAC zone in cluster units may be referred to
  • a PAC may include
  • FIGS. 1 A or IB illustrate PAC zones on a high density optical disc in accordance with an
  • the high density optical disc may be partitioned from an inner
  • the lead-in zone may be further partitioned into an INFO2 zone and an INFOl zone for
  • the INFO2 zone and an INFOl zone may be recorded various kinds of information thereon.
  • the INFO2 zone and an INFOl zone may be recorded various kinds of information thereon.
  • PAC Physical Access Control
  • a PAC zone assigned to the INFO2 zone may be labeled a PAC2 zone and
  • the PAC zone assigned to the INFOl zone may be labeled a PAC1 zone.
  • One of the PAC2 is the PAC zone assigned to the INFOl zone.
  • the PAC1 zone and the PAC1 zone may have an original PAC recorded thereon and the other one may
  • the original PAC is recorded on the PACII zone and the backup PAC is recorded on the PACI
  • FIG. IB illustrates a diagram of a dual layer disc structure having two recording layers including first recording layer (L0: Layer 0) and second recording layer (LI : Layer 1),
  • each of the recording layers includes a Lead-in/out Zone (also called as an Inner
  • Each of the lead-in zone (inner zone 0) and the lead-out zone (inner zone 1) may include an
  • PAC zones may be located in the INFO2 zone and/or the INFOl zone.
  • a PAC zone assigned to the ESTFO2 zone may be labeled a
  • PAC2 zone and the PAC zone assigned to the INFOl zone may be labeled a PAC1 zone.
  • the PAC2 zone and the PAC1 zone may have an original PAC recorded thereon and the
  • the dual layer disc has a
  • the PAC zone may be provided to handle problems that may occur when an older version of
  • the PAC zone may handle compatibility problems using
  • An "unknown rule” may be used to control predictable operations of the disc, for example,
  • An area may also be provided on the disc, indicating where the "unknown rule" is applicable,
  • Management Area a Spare Area, a User Data Area, and/or other similar areas.
  • an older version drive apparatus is able to access by
  • zone may be reviewed in view of writable characteristics of the high density optical disc.
  • the INFO2 zone may
  • Clusters have 256 clusters including 32 clusters of PACII zone, 32 clusters of DMA (Defect Management Area) 2 zone for management of defects, 32 clusters of CD (Control Data) 2
  • DMAl zone for managing defects 32 clusters of CDl zone for recording control information,
  • the INFO2 zone may have 256 clusters
  • a PACII zone including a PACII zone, a DMA 2 zone, a CD 2 zone, and a BZ 3 zone, each with 32 clusters,
  • the INFOl zone includes a BZ2 zone, a DMAl zone, a CDl zone, and/or a BZ1-PACI
  • the INFO2 zone may have 256 clusters
  • zone 256 clusters including a CDl zone, and/or a BZ1-PACI zone, each with 32 clusters.
  • the PAC zone may be
  • PAC zone may have 64 clusters.
  • one PAC may have one cluster, for recording a
  • FIG. 3 illustrates a diagram of a structure of a PAC recorded on a high density optical disc in
  • one PAC of one cluster size may include a header zone and a
  • specific information zone specific to a particular disc drive (for example, optical disc drive).
  • the PAC header zone may have 384 bytes allocated to a first sector of the PAC, for recording
  • segments, and another area of the PAC zone may have information specific to the (optical)
  • disc drive may be referred to as "l nown rules" recorded thereon.
  • FIG. 4 For convenience, in the description, particular fields of the PAC that require more
  • FIG. 4 illustrates a diagram showing a structure of a PAC on a high density optical disc in
  • the PAC may include a header portion (in an example, up to 384 bytes of
  • An example header portion may include 4 bytes of "PAC_TD” , 4 bytes of "Unknown PAC
  • the "PACJD” may provide the present PAC status and identification codes, for example, if
  • the "PAC D" is '00 00 00 00h'
  • the "PAC_ID" may indicate that the present PAC is not
  • the "PACJD" is 'FF FF FF FFh', the "PAC_ID" may indicate that the present
  • PAC zone is available for use again even if the PAC zone has been used previously.
  • the "Unknown PAC Rules" field may be used as a field that designates an
  • FIG. 5 illustrates a diagram showing a configuration of an "Unknown PAC Rules" field in
  • a degree of controllability of various areas on the disc may be enabled by
  • the "Area” column in Fig. 5 represents the controllable areas on the disc
  • the "Control” column represents control types, such as
  • the additional bits in the "Number of bits" column may represent cases of dual layer disc
  • Unknown PAC Rules may be used to control a number of areas on a disc. For example,
  • DMA zones which may or may not include a Disc Definition Structure (DDS) in the INFO
  • 1, 2, 3 and/or 4 zone can indicate recording controllability on the Spare Areas in the Data
  • Zone can indicate recording and/or reproducing controllability on the Control Data (CD)
  • Zone in the INFOl, 2, 3, and/or 4 zones can indicate recording and/or reproducing
  • controllability on the User Data Area in the Data Zone can indicate recording and/or
  • the User Data Area may be used as a field for
  • controllability of a replacement area for a defective area is also applicable to the re-writable
  • the "PAC Update Count" field in FIG. 4 may indicate a number of the
  • PAC updates may have '0' written initially, and/or may be incremented by one every time
  • the "Entire Disc Flag" field may be used as a field for indicating that the
  • PAC is applicable to an entire area of the disc and the "Number of Segments" field is a field
  • a maximum number of segments may be allocatable to one PAC.
  • a maximum number of 32 segments can be allocated to one
  • Segment_31 fields, each including 8 bytes. Each of the “ Segment ) ⁇ 31 " fields may
  • FIG. 6 illustrates segment zones on a high
  • positions of the segment areas may be identified by an optical disc drive by
  • none of the plurality of allocated segments need overlap and the
  • starting and ending positions may be designated at boundaries of clusters.
  • the present invention may provide a plurality of PACs, to
  • FIG. 7 illustrates a PAC zone on a high density optical disc in accordance with an example
  • a plurality of valid PACs each with a common cluster size, may be
  • PAC zone for example, the PAC zone of INFO2 or INFOl
  • PAC zone for example, the PAC zone of INFO2 or INFOl
  • a valid PAC may be defined as a zone containing the various kinds of
  • PAC information and a maximum number (for example, 32, or 64 in the case of a dual layer
  • disc of valid PACs may be provided on a disc, each with one cluster size that can be allocated to one PAC zone.
  • a remainder of the PAC zone may have a PAC of FF FF FF FFh
  • the PAC may be written at an area next to the defective area.
  • the defect may be
  • the PAC information may be written on an area next to
  • FIG. 8 illustrates segment zones managed by a plurality of PAC zones on a disc (for example,
  • controllable segment areas may be designated on the disc by using a
  • segments areas managed by different PACs may overlap as shown in FIG. 8.
  • PAC #1 overlap to form a first overlap area, and segment #1 area managed by PAC #0 and
  • segment #0 area managed by PAC #2 overlap to form a second overlap area.
  • control of the overlapped segment areas may be a contradiction of control for the overlapped segment areas, for example, control of
  • segment #0 by PAC #1 may be read only while control of segment #0 by PAC #0 may be
  • an OR-function may be applied, where, if one
  • PAC does not allow (i.e. excludes), a certain control operation, the operation is not allowed
  • control of segment #0 managed by PAC #0 is both writing and reading and control of segment #0 managed by PAC #1 is reading only
  • the control of the overlapped segment areas may be reading only.
  • both writing and reading are allowed for the segment #0 managed by the PAC #0 and writing is not allowed but only reading is allowed for the segment #0 managed by the PAC #1, writing is not allowed but only reading is allowed for the overlapped segment areas.
  • Table 1 illustrates the above example.
  • an AND-function may be applied, where, if one PAC allows a certain control operation, the operation is allowed, regardless of whether the other PAC allows the operation or not.
  • the operation is allowed, regardless of whether the other PAC allows the operation or not.
  • Table 2 illustrates the above example. TABLE 2
  • Boolean operation functions or combinations thereof could also be implemented as would be apparent in view of the discussion of example embodiments of the present invention set forth above.
  • PAC #1 is a PAC designated more recently in time than PAC #0
  • PAC #2 is a PAC more recently in time than PAC #1
  • the newly (or more recently) designated PAC may control, which will be described with reference to FIG. 8.
  • control method may be termed a "New PAC Rule" different from the OR-function and the AND-function in the foregoing example embodiments.
  • control may be defined according to an existing or older PAC (or combinations thereof), not the newly designated PAC as would be apparent in view of the
  • FIG. 9 illustrates a block diagram of an optical recording/reproducing apparatus in
  • the optical recording/reproducing apparatus may include a
  • controller 20 for controlling the recording/reproducing device 10.
  • the recording/reproducing device 10 may act as the "optical disc
  • the host 20 gives a writing or reproduction instruction to write to
  • the recording/reproducing device 10 performs the recording/reproduction to/from the
  • the recording/reproducing device 10 may further include an interface part 12 for performing
  • a data processor 13 for receiving a
  • a memory 15 for temporary storage of various kinds of information
  • the microcomputer 16 in the recording/reproducing device 10 may receive the writing
  • recording/reproducing device 10 may write control information of the area in the PAC zone
  • PAC information such as the PACJD for a written state
  • segment information which is control information on the particular area of the disc.
  • PAC information may be written in a plurality of valid PACs on the PAC 1 zone of the INFO
  • the microcomputer 16 may provide position information of the area the data is written
  • the information in the memory 10 may include position information of various zones
  • positions of valid PACs in the PAC zone may be known from disc definition structure (DDS) information.
  • PACs are known, a PACJD field of the PAC may be examined, for verifying if the PACJD
  • the method determines that a recording and reproducing device
  • the method determines that the recording and reproducing
  • the microcomputer 16 may then provide the location information and data according to the

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
PCT/KR2005/000593 2004-03-18 2005-03-03 Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium Ceased WO2005088636A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2559932A CA2559932C (en) 2004-03-18 2005-03-03 Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
JP2007503820A JP4707710B2 (ja) 2004-03-18 2005-03-03 重複するセグメント情報を含む記録媒体、記録媒体を形成、記録および再生する装置並びにその方法
AU2005222281A AU2005222281B2 (en) 2004-03-18 2005-03-03 Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
EP05710868.0A EP1726012B1 (en) 2004-03-18 2005-03-03 Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
BRPI0508869-0A BRPI0508869A (pt) 2004-03-18 2005-03-03 meio de gravação, método de controlar acesso a um meio de gravação, método e aparelho de gravar e/ou reproduzir de meio de gravação

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US55396104P 2004-03-18 2004-03-18
US60/553,961 2004-03-18
KR20040039144 2004-05-31
KR10-2004-0039144 2004-05-31
KR20040051609 2004-07-02
KR10-2004-0051609 2004-07-02

Publications (1)

Publication Number Publication Date
WO2005088636A1 true WO2005088636A1 (en) 2005-09-22

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PCT/KR2005/000593 Ceased WO2005088636A1 (en) 2004-03-18 2005-03-03 Recording medium with overlapping segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium

Country Status (11)

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US (3) US7480764B2 (https=)
EP (1) EP1726012B1 (https=)
JP (2) JP4707710B2 (https=)
KR (1) KR101065700B1 (https=)
AU (1) AU2005222281B2 (https=)
BR (1) BRPI0508869A (https=)
CA (1) CA2559932C (https=)
HU (1) HUE028328T2 (https=)
MY (1) MY142248A (https=)
TW (1) TWI381374B (https=)
WO (1) WO2005088636A1 (https=)

Cited By (4)

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AU2004317315B2 (en) * 2004-03-19 2009-11-19 Lg Electronics Inc. Recording medium with physical access control (PAC) information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
US7710853B2 (en) 2004-03-18 2010-05-04 Lg Electronics, Inc. Recording medium with segment information thereon and apparatus and methods for forming, recording, and reproducing the recording medium
US7970988B2 (en) 2004-03-19 2011-06-28 Lg Electronics Inc. Recording medium with status information thereon which changes upon reformatting and apparatus and methods for forming, recording, and reproducing the recording medium
US8094524B2 (en) * 2004-03-18 2012-01-10 Lg Electronics Inc. Apparatus and method for recording and/or reproducing data to/from recording medium

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US8903823B1 (en) * 2011-05-25 2014-12-02 Cadence Design Systems, Inc. Coverage-based bug clustering
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