Method and apparatus for recording or reproducing on or from optical medium using SBM information

• US 7,826,320 B2
• Filed: 06/23/2009
• Issued: 11/02/2010
• Est. Priority Date: 03/04/2003
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Sung Dae, Park, Yong Cheol
• Primary Examiner(s): HALEY, JOSEPH R
• Application Number:
  US12/490,224
• Publication Number:
  US 20090257328A1
• Time in Patent Office: 497 Days
• Field of Search: None
• US Class Current: 369/53.17
• 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 2020/10907 using pseudo-overwriting, i.e. virtually or logically overwriting data on WORM media by remapping recorded blocks to alternate areas
• 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
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• 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

Abstract

A method and apparatus for recording or reproducing data are discussed. According to an embodiment, the invention is directed to a method for recording data onto a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the method comprising steps of: (a) recording a first data block having a temporary defect list for managing a defective area of the data area onto a temporary defect management area allocated in the inner area or the spare area; and (b) recording a second data block having a space bitmap onto the temporary defect management area.

Claims

1. A method for recording data onto a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the method comprising steps of:

(a) recording a first data block having a temporary defect list for managing a defective area of the data area onto a temporary defect management area allocated in the inner area or the spare area; and

(b) recording a second data block having a space bitmap onto the temporary defect management area, the space bitmap including layer information indicating a layer number of the recording layer to which the bitmap data is applied, bitmap data indicating whether or not each cluster in the user data area on the recording layer contains recorded data, first position information of a start cluster of the user data area on the recording layer,

wherein each of the first and second data blocks contains second position information indicating a position of a latest temporary defect list recorded in the temporary defect management area and second position information indicating a position of a latest space bit map recorded in the temporary defect management area.

2. The method of claim 1, further comprising a step of:

(c) recording a final temporary defect list and a final space bit map onto a defect management area located in the inner area or the outer area when completing recording to the recording medium.

3. The method of claim 1, wherein the recording medium has a first recording layer and a second recording layer, and the method comprises:

recording a second space bitmap applied to the first recording layer onto the temporary defect management area; and

recording a second space bitmap applied to the second recording layer onto the temporary defect management area.

4. An apparatus for recording data onto a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the apparatus comprising:

a pickup configured to record data onto the recording medium;

a microcomputer configured to control the pickup, wherein the pickup is configured to record first data block having a temporary defect list for managing a defective area of the data area onto a temporary defect management area allocated in the inner area or the spare area; and

configured to record second data block having a space bitmap onto the temporary defect management area, the space bitmap including layer information indicating a layer number of the recording layer to which the bitmap data is applied, bitmap data indicating whether or not each cluster in the user data area on the recording layer contains recorded data, first position information of a start cluster of the user data area on the recording layer,

wherein each of the first and second data blocks contains second position information indicating a position of a latest temporary defect list recorded in the temporary defect management area and second position information indicating a position of a latest space bit map recorded in the temporary defect management area.

5. The apparatus of claim 4, wherein the pickup is configured to record a final temporary defect list and a final space bit map onto a defect management area located in the inner area or the outer area when completing recording to the recording medium.

6. The apparatus of claim 4, wherein the recording medium has a first recording layer and a second recording layer, wherein the pickup is configured to record a second space bitmap applied to the first recording layer onto the temporary defect management area;

and record a second space bitmap applied to the second recording layer onto the temporary defect management area.

7. The apparatus of claim 4, further comprising:

a servo configured to control the pickup to achieve a tracking properly and maintain a distance with respect to the recording medium; and

a data processor configured to process data to be recorded on the recording medium.

8. A method for reproducing data from a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the method comprising steps of:

(a) reproducing a first data block having a temporary defect list for managing a defective area of the data area from a temporary defect management area allocated in the inner area or the spare area; and

(b) reproducing a second data block having a space bitmap from the temporary defect management area, the space bitmap including layer information indicating a layer number of the recording layer to which the bitmap data is applied, bitmap data indicating whether or not each cluster in the user data area on the recording layer contains recorded data, first position information of a start cluster of the user data area on the recording layer,

wherein each of the first and second data blocks contains second position information indicating a position of a latest temporary defect list recorded in the temporary defect management area and second position information indicating a position of a latest space bit map recorded in the temporary defect management area.

9. The method of claim 8, further comprising a step of:

(c) reproducing a final defect list and a final space bit map from a defect management area located in the inner area or the outer area if recording to the recording medium has been completed.

10. The method of claim 8, further comprising a step of:

(d) reproducing data recorded in a replacement area replacing the defective area based on the temporary defect list reproduced from the temporary defect management area or based on the final defect list reproduced from the defect management area. The method of claim 8, further comprising a step of;

(e) determining whether or not a specific area to which data is requested to be recorded contains data recorded already based on the space bitmap reproduced from the temporary defect management area or based on the final space bitmap reproduced from the defect management area.

11. The method of claim 8, further comprising a step of:

(e) determining whether or not a specific area to which data is requested to be recorded contains data recorded already based on the space bitmap reproduced from the temporary defect management area or based on the final space bitmap reproduced from the defect management area.

12. The method of claim 8, further comprising steps of:

(f) determining whether or not a specific area to which data is requested to be recorded contains data recorded already based on the space bitmap reproduced from the temporary defect management area or based on the final space bitmap reproduced from the defect management area; and

(g) recording, onto another area in the data area, the data requested to be recorded if the specific area contains recorded data.

13. An apparatus for reproducing data from a recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the apparatus comprising:

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

a microcomputer configured to control the pickup, wherein the pickup is configured to reproduce a first data block having a temporary defect list for managing a defective area of the data area from a temporary defect management area allocated in the inner area or the spare area; and

configured to reproduce a second data block having a space bitmap from the temporary defect management area, the space bitmap including layer information indicating a layer number of the recording layer to which the bitmap data is applied, bitmap data indicating whether or not each cluster in the user data area on the recording layer contains recorded data, first position information of a start cluster of the user data area on the recording layer,

wherein each of the first and second data blocks contains second position information indicating a position of a latest temporary defect list recorded in the temporary defect management area and second position information indicating a position of a latest space bit map recorded in the temporary defect management area.

14. The apparatus of claim 13, wherein the pickup is configured to reproduce a final defect list and a final space bit map from a defect management area located in the inner area or the outer area if recording to the recording medium has been completed.

15. The apparatus of claim 13, wherein the pickup is configured to reproduce data recorded in a replacement area replacing the defective area based on the temporary defect list reproduced from the temporary defect management area or based on the final defect list reproduced from the defect management area.

16. The apparatus of claim 13, wherein the microcomputer is configured to determine whether or not a specific area to which data is requested to be recorded contains data recorded already based on the space bitmap reproduced from the temporary defect management area or based on the final space bitmap reproduced from the defect management area.

17. The apparatus of claim 13, wherein the microcomputer is configured to determine whether or not a specific area to which data is requested to be recorded contains data recorded already based on the space bitmap reproduced from the temporary defect management area or based on the final space bitmap reproduced from the defect management area, and the pickup is configured to record, onto another area in the data area, the data requested to be recorded if the specific area contains recorded data.

18. A recording medium having a recording layer, the recording layer including an inner area, a data area and an outer area, the data area having a user data area and a spare area, the user data area consisting of a plurality of clusters, the recording medium comprising:

a temporary defect management area allocated in the inner area or the spare area, the temporary defect management area storing therein a first data block having a temporary defect list for managing a defective area of the data area and storing therein a second data block having a space bitmap from the temporary defect management area, the space bitmap including layer information indicating a layer number of the recording layer to which the bitmap data is applied, bitmap data indicating whether or not each cluster in the user data area on the recording layer contains recorded data, first position information of a start cluster of the user data area on the recording layer,

wherein each of the first and second data blocks contains second position information indicating a position of a latest temporary defect list stored in the temporary defect management area and second position information indicating a position of a latest space bit map stored in the temporary defect management area.

19. The recording medium of claim 18, further comprising:

a defect management area located in the inner area or the outer area, the defect management area storing therein a final temporary defect list and a final space bit map onto when recording to the recording medium is to be completed.

20. The recording medium of claim 18, wherein the recording medium has a first recording layer and a second recording layer, and the temporary defect management area stores therein a second data block for the first recording layer and a second data block for the second recording layer separately.