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

• US 7,624,299 B2
• Filed: 01/12/2007
• Issued: 11/24/2009
• Est. Priority Date: 02/25/2003
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Sung Dae, Park, Yong Cheol
• Primary Examiner(s): Wilson; Yolanda L
• Application Number:
  US11/652,691
• Publication Number:
  US 20070122124A1
• Time in Patent Office: 1,047 Days
• Field of Search: None
• US Class Current: 714/6.12
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/1826 wherein a defect list or error map is generated
• 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 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/322 used signal is digitally coded
• CPC Class Codes: G11B 7/00736 Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082
• CPC Class Codes: G11B 7/24038 Multiple laminated recording layers

Abstract

A writable-once optical recording medium such as a BD-WO, and a method and apparatus for managing the writable-once optical recording medium, are provided. According to an embodiment, the method includes recording temporary management information in a temporary defect management area of the recording medium, the temporary management information including disc usage management information indicating a recording or non-recording status of the user area of the each recording layer; and transferring the disc usage management information from the at least one temporary defect management area to the at least one final defect management area of the recording medium, wherein in the recording step, the disc usage management information for each of the recording layers is separately recorded in the temporary defect management area.

Claims

1. A method of managing an optical recording medium, the recording medium including a plurality of recording layers, each recording layer having at least one temporary defect management area and at least one final defect management area, the method comprising:

recording temporary management information in a temporary defect management area of the recording medium, the temporary management information including disc usage management information indicating a recording or non-recording status of a user area of the each recording layer; and

transferring the disc usage management information from the temporary defect management area to the at least one final defect management area of the recording medium,

wherein in the recording step, the disc usage management information for each of the recording layers is separately recorded in the temporary defect management area.

2. The method of claim 1, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that in the transferring step, the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D0, D0, D0, D1, D1, D1 and D1.

3. The method of claim 1, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that in the transferring step, the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D0, D1, D1, D0, D0, D1 and D1.

4. The method of claim 1, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that in the transferring step, the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D1, D0, D1, D0, D1, D0 and D1.

5. The method of claim 1, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that in the transferring step, the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D1, D1 and D0.

6. The method of claim 1, wherein the disc usage management information represents a space bit map.

7. The method claim 1, wherein the transferring step is performed when the recording medium is to be finalized.

8. The method of claim 7, wherein the recording medium is to be finalized if a data recording operation in a user data area of the recording medium is completed, if the at least one temporary defect management area is full, or if a finalize command is received.

9. The method of claim 1, wherein in the transferring step, the temporary management information is transferred, which further includes temporary defect list information and temporary disc definition structure information, and is latest temporary management information written on the recording medium.

10. An apparatus for managing an optical recording medium, the recording medium including a plurality of recording layers, each recording layer having at least one temporary defect management area and at least one final defect management area, the apparatus comprising:

a pickup configured to record data on the recording medium; and

a microprocessor configured to control the pickup to record-temporary management information in a temporary defect management area of the recording medium, the temporary management information including disc usage management information indicating a recording or non-recording status of the recording medium, wherein the microprocessor is configured to control the pickup to separately record the disc usage management information for each of the recording layers into the temporary defect management area, and the microprocessor is configured to control the pickup to transfer the disc usage management information from the temporary defect management area to the at least one final defect management area of the recording medium.

11. The apparatus of claim 10, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, wherein the microprocessor is configured to control the pickup to sequentially record the first and second disc usage management information into at least one of the final defect management areas of the recording layers according to the following order:

D0, D1, D1 and D0.

12. The apparatus of claim 10, wherein the microprocessor is configured to control the pickup to transfer the disc usage management information from the temporary defect management area to the at least one final defect management area when the recording medium is to be finalized.

13. An optical recording medium, comprising:

a plurality of recording layers, each recording layer having at least one temporary defect management area and at least one final defect management area,

wherein temporary management information is recorded in a temporary defect management area of the recording medium, the temporary management information including disc usage management information indicating a recording or non-recording status of the recording medium,

the disc usage management information for each of the recording layers is separately recorded in the temporary defect management area, and

the disc usage management information is transferred from the temporary defect management area to the at least one final defect management area of the recording medium.

14. The recording medium of claim 13, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D0, D0, D0, D1, D1, D1 and D1.

15. The recording medium of claim 13, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D0, D1, D1, D0, D0, D1 and D1.

16. The recording medium of claim 13, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D1, D0, D1, D0, D1, D0 and D1.

17. The recording medium of claim 13, wherein the disc usage management information includes a first disc usage management information (D0) for a first recording layer of the recording medium and a second disc usage management information (D1) for a second recording layer of the recording medium, such that the first and second disc usage management information is recorded sequentially in at least one of the final defect management areas of the recording layers according to the following order:

D0, D1, D1 and D0.

18. The recording medium of claim 13, wherein the disc usage management information represents a space bit map.

19. The recording medium of claim 13, wherein the disc usage management information is transferred from the temporary defect management area to the at least one final defect management area when the recording medium is to be finalized.

20. The recording medium of claim 19, wherein the recording medium is to be finalized if a data recording operation in a user data area of the recording medium is completed, if the at least one temporary defect management area is full, or if a finalize command is received.