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

• US 7,911,904 B2
• Filed: 03/06/2009
• Issued: 03/22/2011
• Est. Priority Date: 09/30/2002
• 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): Edun; Muhammad N
• Application Number:
  US12/399,876
• Publication Number:
  US 20090175141A1
• Time in Patent Office: 746 Days
• Field of Search: None
• US Class Current: 369/53.17
• CPC Class Codes: G11B 20/10009 Improvement or modification of read or write signals
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 20/22 for reducing distortions
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• 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 2220/2541 Blu-ray discs; Blue laser DVR discs

Abstract

A recording medium, and a method and apparatus for recording and/or reproducing management information on/from the recording medium are discussed. According to an embodiment, the invention provides an apparatus includes components so that the apparatus finalizes the recording medium when receiving request of an external host or when a temporary defect management area located in at least one of a non-data area and a non-user data area becomes full, where a controller is configured to control the components so that the apparatus records the latest defect list information written in the temporary defect management area onto a final defect management area when finalizing the recording medium.

Claims

1. An apparatus for recording management information on a recording medium, the recording medium including a data area having a user data area and a non-user data area, and a non-data area having a final defect management area, the apparatus comprising:

a pickup configured to write/read data to/from the recording medium;

a servo configured to control the pickup to maintain a distance between the pickup and the recording medium and to track a track of the recording medium;

a data processor configured to process and supply input data to the pickup, and to process data read from the recording medium;

a memory configured to store data associated with the recording medium; and

a controller operatively coupled to the components above—

the pickup, the servo, the data processor and the memory, and configured to control the components so that the apparatus finalizes the recording medium when receiving a request of an external host or when all of a temporary defect management area located in at least one of the non-data area and the non-user data area becomes full, where the controller is configured to control the components so that the apparatus records the latest defect list information written in the temporary defect management area onto the final defect management area when finalizing the recording medium.

2. The apparatus of claim 1, wherein the final defect management area consists of 8 recording portions, where the controller is configured to control the components so that the apparatus records the latest defect list information onto at least one of the recording portions when finalizing the recording medium.

3. The apparatus of claim 2, wherein the controller is configured to control the components so that the apparatus records the latest defect list information repeatedly up to 7 recording portions.

4. The apparatus of claim 3, wherein if the recording medium is a single layer recording medium, each recording portion of the final defect management area consists of 4 clusters;

and if the recording medium is a double layer recording medium, each recording portion of the final defect management area consists of 6 clusters.

5. The apparatus of claim 2, wherein the controller is configured to control the components so that the apparatus records location information pertaining to the latest defect list information written in the final defect management area onto one of the recording portions when finalizing the recording medium.

6. The apparatus of claim 2, where until the recording medium is to be finalized, the controller is configured to update defect list information to reflect a defective area discovered recently and to control the components so that the apparatus records the updated defect list information onto the temporary defect management area.

7. The apparatus of claim 6, wherein the updated defect list information written in the temporary defect management area includes every previous defect entry pertaining to a defective area discovered previously and a new defect entry pertaining to the defective area discovered recently.

8. The apparatus of claim 6, wherein the controller is configured to control the components so that the apparatus records location information pertaining to the updated defect list information onto the temporary defect management area along with the updated defect list information.

9. The apparatus of claim 1, further comprising:

the external host configured to exchange data/command with an interface contained in the apparatus.

10. An apparatus for reproducing management information from a recording medium, the recording medium including a data area having a user data area and a non-user data area, and a non-data area having a final defect management area, the apparatus comprising:

a pickup configured to read data from the recording medium;

a servo configured to control the pickup to maintain a distance between the pickup and the recording medium and to track a track of the recording medium;

a data processor configured to process data read from the recording medium;

a memory configured to store data associated with the recording medium; and

a controller operatively coupled to the components above—

the pickup, the servo, the data processor and the memory, and configured to control the components so that the apparatus reproduces defect list information written in the final defect management area of the recording medium finalized when receiving a request of an external host or when all of a temporary defect management area located in at least one of the non-data area and the non-user data area becomes full, where the defect list information written in the final defect management area is identical to the latest defect list information written in the temporary defect management area at the moment when finalizing the recording medium.

11. A method of recording management information on a recording medium, the recording medium including a data area having a user data area and a non-user data area, and a non-data area having a final defect management area, the method comprising:

finalizing the recording medium when receiving a request of an external host or when all of a temporary defect management area located in at least one of the non-data area and the non-user data area becomes full, where the step of finalizing includes a step of recording the latest defect list information written in the temporary defect management area onto the final defect management area when finalizing the recording medium.

12. The method of claim 11, wherein the final defect management area consists of 8 recording portions, and the step of recording records the latest defect list information onto at least one of the recording portions when finalizing the recording medium.

13. The method of claim 12, wherein the step of recoding records the latest defect list information repeatedly up to 7 recording portions.

14. The method of claim 13, wherein if the recording medium is a single layer recording medium, each recording portion of the final defect management area consists of 4 clusters;

and if the recording medium is a double layer recording medium, each recording portion of the final defect management area consists of 6 clusters.

15. The method of claim 12, further comprising:

until the recording medium is to be finalized, updating defect list information to reflect a defective area discovered recently and recording the updated defect list information onto the temporary defect management area, wherein the updated defect list information written in the temporary defect management area includes every previous defect entry pertaining to a defective area discovered previously and a new defect entry pertaining to the defective area discovered recently.

16. A method of reproducing management information from a recording medium, the recording medium including a data area having a user data area and a non-user data area, and a non-data area having a final defect management area, the method comprising:

reproducing defect list information written in the final defect management area of the recording medium which has been finalized when receiving a request of an external host or when all of a temporary defect management area located in at least one of the non-data area and the non-user data area becomes full, where the defect list information written in the final defect management area is identical to the latest defect list information written in the temporary defect management area at the moment when finalizing the recording medium.

17. A recording medium including a data area and a non-data area, the data area having a user data area and a non-user data area, the recording medium comprising:

a temporary defect management area located in at least one of the non-data area and the non-user data area, until finalizing the recording medium upon a request of an external host or when all of the temporary defect management area becomes full, the temporary defect management area storing therein defect list information; and

a final defect management area located in the non-data area, the final defect management area storing the latest defect list information recorded thereto from the temporary defect management area when finalizing the recording medium.

18. The recording medium of claim 17, wherein the final defect management area consists of 8 recording portions, and at least one of the recording portions stores therein the latest defect list information when finalizing the recording medium.

19. The recording medium of claim 18, wherein the latest defect list information is stored repeatedly up to 7 recording portions.

20. The recording medium of claim 19, wherein if the recording medium is a single layer recording medium, each recording portion of the final defect management area consists of 4 clusters;

and if the recording medium is a double layer recording medium, each recording portion of the final defect management area consists of 6 clusters.