Write-once optical disc, and method and apparatus for recording management information thereon

• US 8,054,718 B2
• Filed: 01/02/2009
• Issued: 11/08/2011
• Est. Priority Date: 07/15/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): Neyzari; Ali
• Application Number:
  US12/348,030
• Publication Number:
  US 20090122668A1
• Time in Patent Office: 1,040 Days
• Field of Search: 369/47.22, 369/275.2, 369/275.3, 369/275.1, 369/47.27, 369/47.14, 369/59.25, 369/47.23, 369/53.21, 369/53.36, 711/112
• US Class Current: 369/47.22
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/1235 session, i.e. a contiguous area having its own lead-in area, program area and lead-out area
• CPC Class Codes: G11B 2020/1265 Control data, system data or management information, i.e. data used to access or process user data
• CPC Class Codes: G11B 2020/1285 Status of the record carrier, e.g. space bit maps, flags indicating a formatting status or a write permission
• CPC Class Codes: G11B 2020/1873 Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/235 Multilayer discs, i.e. multiple recording layers accessed from the same side
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs

Abstract

A write-once optical recording medium and a method and apparatus for recording management information on the recording medium, are provided. The recording medium includes at least one recording layer and SRR information on the recording layer. The SRR information pertains to at least one SRR and includes a header, an SRR entry list, and a terminator. The SRR entry list includes a plurality of SRR entries, each of the SRR entries pertaining to an SRR and including at least one status area for storing therein session start information.

Claims

1. A recording medium having at least one recording layer, the recording medium including a plurality of recording-units where data is sequentially recorded, the recording medium comprising:

a session including at least one recording-unit; and

a temporary defect management area for storing therein management information until the recording medium is finalized, the management information including recording-unit information, the recording-unit information pertaining to the plurality of recording-units and including a recording-unit entry list, the recording-unit entry list including a plurality of recording-unit entries, each recording-unit entry pertaining to a recording-unit and including a session status field to store session start information indicating whether the pertaining recording-unit is a start of the session, a start address field indicating where the pertaining recording-unit starts, and a last recorded address field storing the last recorded address of the pertaining recording-unit,

wherein the session status field is located between the start address field and the last recorded address field, and

wherein when the recording medium is finalized, latest management information recorded in the temporary defect management area is recorded in a defect management area of the recording medium.

2. The recording medium of claim 1, wherein the session status field includes one bit assigned to carry the session start information.

3. The recording medium of claim 1, wherein the session status field further stores therein recording-unit status information indicating whether the pertaining recording-unit is opened or closed.

4. The recording medium of claim 1, wherein the each recording-unit entry includes a recording-unit status field for storing therein recording-unit status information, and the recording-unit status area is located at the beginning bits of the each entry.

5. The recording medium of claim 4, wherein the recording-unit status information indicates whether the pertaining recording-unit is opened or closed.

6. The recording medium of claim 1, wherein the recording-unit information further includes a header, and the header includes a list of opened recording-units for locating each opened recording-unit exiting on the recording medium and a total number of the recording-units.

7. The recording medium of claim 1, wherein the recording-unit information is stored in a temporary defect management area designated on the at least one recording layer.

8. The recording medium of claim 1, wherein the recording medium is a write-once optical disc.

9. A method for recording management information on a recording medium having at least one recording layer, the recording medium including a plurality of recording-units where data is sequentially recorded, the method comprising:

(a) recording management information in a temporary defect management area of the at least one recording layer until the recording medium is finalized, the management information including recording-unit information, the recording-unit information pertaining to the plurality of recording-units and including a recording-unit entry list, the recording-unit entry list including a plurality of recording-unit entries, each recording-unit entry pertaining to a recording-unit and including a session status field to store session start information indicating whether the pertaining recording-unit is a start of a session formed by at least one recording-unit, a start address field indicating where the pertaining recording-unit starts, and a last recorded address field storing therein the last recorded address of the pertaining recording-unit,

wherein the session status field is located between the start address field and the last recorded address field; and

(b) recording latest management information recorded in the temporary defect management area onto a defect management area of the recording medium when the recording medium is finalized.

10. The method of claim 9, wherein the session status field includes one bit assigned to carry the session start information.

11. The method of claim 9, wherein the recording step (a) further includes:

(a1) storing recording-unit information into the session status field, the recording-unit information indicating whether the pertaining recording-unit is opened or closed.

12. The method of claim 9, wherein the recording step (a) further includes:

(a1) storing recording-unit information into a recording-unit status field of the pertaining recording-unit entry, the recording-unit status field being located at the beginning bits of the each recording-unit entry.

13. The method of claim 12, wherein the recording-unit information indicates whether the pertaining recording-unit is opened or closed.

14. The method of claim 9, wherein the recording-unit information further includes a header, and the header includes a list of opened recording-units for locating each opened recording-unit existing on the recording medium and a total number of the recording-units.

15. The method of claim 9, wherein the recording step (a) the recording-unit information is recorded into a temporary defect management area designated on the at least one recording layer.

16. The method of claim 9, wherein the recording medium is a write-once optical disc.

17. An apparatus for recording management information on a recording medium having at least one recording layer, the recording medium including a plurality of recording-units where data is sequentially recorded, the apparatus comprising:

an interface configured to communicate with an external device;

a pickup configured to record/reproduce data to/from the recording medium;

a data processor configured to receive and restore a reproduction signal from the recording medium, and modulate a signal proper to the recording medium;

a servo configured to control the pickup to accurately read/record data signal from/to the recording medium;

a memory configured to store therein data temporarily; and

a microcomputer operatively coupled to above components—

the interface, the pickup, the data processor, the servo and the memory—

and configured to control the components so that the apparatus records management information in a temporary defect management area on the at least one recording layer until the recording medium is finalized, the management information including recording-unit information, the recording-unit information pertaining to the plurality of recording-units and including a recording-unit entry list, the recording-unit entry list including a plurality of recording-unit entries, each recording-unit entry pertaining to a recording-unit and including a session status field for storing therein session start information indicating whether the pertaining recording-unit is a start of a session formed by at least one recording-unit, a start address field indicating where the pertaining recording-unit starts, and a last recorded address field storing therein the last recorded address of the pertaining recording-unit, wherein the session status field is located between the start address field and the last recorded address field, and the microcomputer configured to control the components so that the apparatus records latest management information recorded in the temporary defect management area onto a defect management area of the recording medium when the recording medium is finalized.

18. The apparatus of claim 17, wherein the session status field includes one bit assigned to carry the session start information.

19. The apparatus of claim 17, wherein the session status field includes recording-unit status information indicating whether the pertaining recording-unit is opened or closed.

20. The apparatus of claim 17, wherein the each recording-unit entry includes a recording-unit status field for storing therein recording-unit status information, and the recording-unit status area is located at the beginning bits of the each entry.

21. The apparatus of claim 20, wherein the recording-unit information indicates whether the pertaining recording-unit is opened or closed.

22. The apparatus of claim 17, wherein the recording-unit information further includes a header, and the header includes a list of opened recording-units for locating each opened recording-unit existing on the recording medium and a total number of the recording-units.

23. The apparatus of claim 17, wherein the apparatus records the recording-unit information onto a temporary defect management area designated on the at least one recording layer.

24. The apparatus of claim 17, wherein the recording medium is a write-once optical disc.

25. The apparatus of claim 17, further comprising:

a host configured for issue to the microprocessor a command for recording/reproducing information on/from the recording medium.

26. An apparatus for recording management information on a recording medium having at least one recording layer, the recording medium including a plurality of recording-units where data is sequentially recorded, the apparatus comprising:

a pickup configured to record/reproduce data to/from the recording medium; and

a microcomputer, operatively coupled to the pickup, configured to include a module configured to control the pickup to record management information in a temporary defect management area on the at least one recording layer until the recording medium is finalized, the management information including recording-unit information, the recording-unit information pertaining to the plurality of recording-units and including a recording-unit entry list, the recording-unit entry list including a plurality of recording-unit entries, each recording-unit entry pertaining to a recording-unit and including a session status field for storing therein session start information indicating whether the pertaining recording-unit is a start of a session formed by at least one recording-unit, a start address field indicating where the pertaining recording-unit starts, and a last recorded address field storing therein the last recorded address of the pertaining recording-unit, wherein the session status field is located between the start address field and the last recorded address field, and the microcomputer configured to control the pickup to record latest management information recorded in the temporary defect management area onto a defect management area of the recording medium when the recording medium is finalized.