CA2559932A1 - 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
CA2559932A1
CA2559932A1 CA002559932A CA2559932A CA2559932A1 CA 2559932 A1 CA2559932 A1 CA 2559932A1 CA 002559932 A CA002559932 A CA 002559932A CA 2559932 A CA2559932 A CA 2559932A CA 2559932 A1 CA2559932 A1 CA 2559932A1
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CA
Canada
Prior art keywords
pac
recording medium
segment
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.)
Granted
Application number
CA002559932A
Other languages
French (fr)
Other versions
CA2559932C (en
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.
Yong Cheol Park
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., Yong Cheol Park filed Critical Lg Electronics Inc.
Publication of CA2559932A1 publication Critical patent/CA2559932A1/en
Application granted granted Critical
Publication of CA2559932C publication Critical patent/CA2559932C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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

Abstract

A recording medium, such as a high-density and/or optical recording medium including segment information recorded thereon, and apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection, data management and/or reproduction compatibility. The recording medium may contain at least one segment area which is an area on the disc controlled by a plurality of valid PACs and if the designated segment areas overlap with one another, control information of the respective PACs which control the overlapped area may be applied to control the overlapped area.

Claims (34)

1. A recording medium having a data structure for managing a data area of a recording medium, comprising:
at least one physical access control (PAC) cluster, the at least one PAC
cluster including information for managing recording to and/or reproducing from the recording medium, each PAC cluster including segment information identifying at least one segment in a user data area, wherein segments of a same PAC cluster are not overlapped.
2. The recording medium of claim 1, wherein at least one segment in a first PAC cluster may overlap with at least one segment of a second PAC cluster.
3. The recording medium of claim 2, wherein access control of the overlapping at least one segment in the first PAC cluster and the overlapping at least one segment of the second PAC cluster is according to at least one overlap rule.
4. The recording medium of claim 3, wherein the at least one overlap rule is an "OR"
rule.
5. The recording medium of claim 4, wherein the "OR" rule requires both the first PAC

cluster and the second PAC cluster to allow an operation in order for the operation to be allowed in the overlapping at least one segment in the first PAC cluster and the overlapping at least one segment of the second PAC cluster.
6. The recording medium of claim 4, wherein the "OR" rule indicates that if any one of the first PAC cluster and the second PAC cluster does not allow to access the at least one segment of the first and second PAC cluster, overlap areas of the at least one segment are not allowed to access.
7. The recording medium of claim 5, wherein the operation is a record operation.
8. The recording medium of claim 5, wherein the operation is a reproduce operation.
9. The recording medium of claim 3, wherein the at least one overlap rule is a most recent PAC rule.
10. The recording medium of claim 9, wherein the most recent PAC rule requires a more recently defined of the first PAC cluster and the second PAC cluster to allow an operation in order for the operation to be allowed in the overlapping at least one segment in the first PAC
cluster and the overlapping at least one segment of the second PAC cluster.
11. The recording medium of claim 10, wherein the operation is a record operation.
12. The recording medium of claim 10, wherein the operation is a reproduce operation.
13. The recording medium of claim 1, wherein at least one PAC cluster is unknown to an apparatus attempting to record to or reproduce from the recording medium.
14. The recording medium of claim 13, wherein the at least one unknown PAC
cluster includes unknown PAC rules, and is processed by the apparatus according to the unknown PAC rules.
15. The recording medium of claim 14, wherein the unknown PAC rules control access to all segments of the corresponding PAC cluster.
16. The recording medium of claim 1, wherein the recording medium is a rewritable recording medium.
17. The recording medium of claim 1, wherein the recording medium is a write once recording medium.
18. The recording medium of claim 1, wherein the recording medium is a read-only recording medium.
19. A method of controlling access to a recording medium, comprising:
identifying a first and second physical access control (PAC) cluster, each including segment information identifying non-overlapping segments in a user data area of the recording medium, wherein at least one segment in a first PAC cluster overlaps with at least one segment of a second PAC cluster; and controlling access io overlap areas of the at least one segment in the first PAC cluster and the second PAC cluster depending on at least one overlap rule.
20. The method of claim 19, wherein the at least one overlap rule is an "OR"
rule.
21. The method of claim 20, wherein the "OR" rule requires both the first PAC
cluster and the second PAC cluster to allow an operation in order for the operation to be allowed in the overlapping at least one segment in the first PAC cluster and the overlapping at least one segment of the second PAC cluster.
22. The method of claim 20, wherein the "OR" rule indicates that if any one of the first PAC cluster and the second PAC cluster does not allow to access the at least one segment of the first and second PAC cluster, the overlap areas of the at least one segment are not allowed to access.
23. The method of claim 21, wherein the operation is a record operation.
24. The method of claim 21, wherein the operation is a reproduce operation.
25. The method of claim 19, wherein the at least one overlap rule is a most recent PAC
rule.
26. The method of claim 25, wherein the most recent PAC rule requires a more recently defined of the first PAC cluster and the second PAC cluster to allow an operation in order for the operation to be allowed in the overlapping at least one segment in the first PAC
cluster and the overlapping at least one segment of the second PAC cluster.
27. The method of claim 26, wherein the operation is a record operation.
28. The method of claim 26, wherein the operation is a reproduce operation.
29 29. The method of claim 19, wherein at least one of the first and second PAC
clusters is unknown to an apparatus attempting to record to or reproduce from the recording medium.
30. The method of claim 29, wherein the at least one unknown PAC cluster includes unknown PAC rules, and is processed by the apparatus according to the unknown PAC rules.
31. The method of claim 30, wherein the unknown PAC rules control access to all segments of the corresponding PAC cluster.
32. A method of recording on a recording medium, comprising:
identifying a first and second physical access control (PAC) cluster, each including segment information identifying non-overlapping segments in a user data area of the recording medium, wherein at least one segment in the first PAC cluster overlaps with at least one segment of the second PAC cluster; and recording to overlap areas of the at least one segment in the first PAC
cluster and the at least one segment of the second PAC cluster if both PAC cluster permit to record to the at least one segment.
33. A method of reproducing from a recording medium, comprising:
identifying a first and second physical access control (PAC) cluster, each including segment information identifying non-overlapping segments in a user data area of the recording medium, wherein at least one segment in the first PAC cluster overlaps with at least one segment of the second PAC cluster; and reproducing from overlap areas of the at least one segment in the first PAC
cluster and the at least one segment of the second PAC cluster if both PAC cluster permit to reproduce from the at least one segment.
34. An apparatus for recording to and/or reproducing from a recording medium having a data area, comprising:
a controller for controlling recording or reproducing based on at least one physical access control (PAC) cluster including a first and second physical access control (PAC) cluster,, wherein when at least one segment in the data area defined by the first PAC
cluster overlaps with at feast one segment in the data area defined by the second PAC cluster;
recording to or reproducing from overlap areas is not permitted if recording to or reproducing from any one of the at least one segment of the first and second PAC cluster is not permitted, and a pick-up for recording to or reproducing from the recording medium.
CA2559932A 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 Expired - Fee Related CA2559932C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US55396104P 2004-03-18 2004-03-18
US60/553,961 2004-03-18
KR10-2004-0039144 2004-05-31
KR20040039144 2004-05-31
KR10-2004-0051609 2004-07-02
KR20040051609 2004-07-02
PCT/KR2005/000593 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

Publications (2)

Publication Number Publication Date
CA2559932A1 true CA2559932A1 (en) 2005-09-22
CA2559932C CA2559932C (en) 2012-07-10

Family

ID=46123874

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2559932A Expired - Fee Related 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

Country Status (11)

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

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JP2007529843A (en) 2007-10-25
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MY142248A (en) 2010-11-15
US7809881B2 (en) 2010-10-05
US20090109805A1 (en) 2009-04-30
US7673097B2 (en) 2010-03-02
TW200539154A (en) 2005-12-01
CA2559932C (en) 2012-07-10
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US20050210189A1 (en) 2005-09-22
US7480764B2 (en) 2009-01-20
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AU2005222281A1 (en) 2005-09-22
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JP4707727B2 (en) 2011-06-22
KR101065700B1 (en) 2011-09-19

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