Method and apparatus of recording data on write-once recording medium

• US 20060034411A1
• Filed: 08/15/2005
• Published: 02/16/2006
• Est. Priority Date: 08/16/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Granted Patent: US 8,341,456 B2
• Time in Patent Office: Days
• US Class Current: 375/376
• 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 2020/1893 using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
• 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 7/00375 arrangements for detection of physical defects, e.g. of recording layer
• CPC Class Codes: G11B 7/00458 Verification, i.e. checking data during or after recording
• CPC Class Codes: G11B 7/006 Overwriting G11B7/0065 takes precedence
• 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

An apparatus of recording data on a recording medium includes an optical recording device and a microcomputer. The recording medium has a lead-in area, a lead-out area, and a data zone, where the data zone has a user data area and a spare area. When the microcomputer receives a command for physically overwriting first data in a first area within the user data area and determines that the first area is included in a pre-recorded area, it controls the recording device to record the first data in a first replacement area instead and to record a first entry in a TDMA, where the first entry specifies the locations of the first area and the first replacement area. In addition, when the microprocessor receives a command for recording second data in a second area within the user data area and finds the second area defective, it controls the optical recording device to record the second data in a second replacement area instead and to record a second entry in the TDMA, where the second entry specifies the locations of the second area and the second replacement area.

Claims

1. A method of recording data on a recording medium having a lead-in area, a lead-out area, and a data zone, the data zone having a user data area and a spare area, the method comprising:

recording first data in a first replacement area when a command for physically overwriting the first data in a first area within the user data area is received and the first area is included in a pre-recorded area;

recording a first entry in a temporary disc management area (TDMA), the first entry specifying locations of the first area and the first replacement area;

recording second data in a second replacement area when a command for recording the second data in a second area within the user data area is received and the second area is found to be defective; and

recording a second entry in the TDMA, the second entry specifying locations of the second area and the second replacement area.

2. The method of claim 1, wherein the TDMA is included in the lead-in area.

3. The method of claim 1, wherein the TDMA is included in the spare area within the data zone.

4. The method of claim 1, wherein the first replacement area is included in a data-writable area within the user data area.

5. The method of claim 1, wherein the first replacement area is included in the spare area within the data zone.

6. The method of claim 1, wherein the second replacement area is included in the spare area within the data zone.

7. The method of claim 1, wherein the first and second entries recorded in the TDMA are distinguishable from each other.

8. The method of claim 1, wherein the first entry comprises a status field identifying the first entry as a logical overwrite (LOW) entry.

9. The method of claim 1, wherein the first entry comprises:

a first data field indicating the location of the first area; and

a second data field indicating the location of the first replacement area.

10. The method of claim 1, wherein the first entry comprises a status field indicating whether the first entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry.

11. The method of claim 10, wherein the status field further indicates whether the first replacement area is included in the user data area or in the spare area.

12. The method of claim 1, wherein the first entry comprises:

a first status field identifying the first entry as a logical overwrite (LOW) entry;

a first data field indicating the location of the first area;

a second data field indicating the location of the first replacement area; and

a second status field indicating whether the first entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry and whether the first replacement area is included in the user data area or in the spare area.

13. The method of claim 1, wherein the second entry comprises a status field indicating whether the second entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry.

14. The method of claim 1, wherein the second entry comprises:

a first data field indicating the location of the second area; and

a second data field indicating the location of the second replacement area.

15. The method of claim 1, wherein the second entry comprises:

a status field indicating whether the second entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry;

a first data field indicating the location of the second area; and

a second data field indicating the location of the second replacement area.

16. An apparatus of recording data on a recording medium having a lead-in area, a lead-out area, and a data zone, the data zone having a user data area and a spare area, the apparatus comprising:

an optical recording device configured to record data on the recording medium; and

a microcomputer providing control signals to the optical recording device to record first data in a first replacement area when a command for physically overwriting the first data in a first area within the user data area is received and the first area is included in a pre-recorded area, and to record a first entry in a temporary disc management area (TDMA), the first entry specifying locations of the first area and the first replacement area, wherein the microprocessor further provides control signals to the optical recording device to record second data in a second replacement area when a command for recording the second data in a second area within the user data area is received and the second area is found to be defective, and to record a second entry in the TDMA, the second entry specifying locations of the second area and the second replacement area.

17. The apparatus of claim 16, wherein the TDMA is included in the lead-in area.

18. The apparatus of claim 16, wherein the TDMA is included in the spare area within the data zone.

19. The apparatus of claim 16, wherein the first replacement area is included in a data-writable area within the user data area.

20. The apparatus of claim 16, wherein the first replacement area is included in the spare area within the data zone.

21. The apparatus of claim 16, wherein the second replacement area is included in the spare area within the data zone.

22. The apparatus of claim 16, wherein the first and second entries recorded in the TDMA are distinguishable from each other.

23. The apparatus of claim 16, wherein the first entry comprises a status field identifying the first entry as a logical overwrite (LOW) entry.

24. The apparatus of claim 16, wherein the first entry comprises:

a first data field indicating the location of the first area; and

a second data field indicating the location of the first replacement area.

25. The apparatus of claim 16, wherein the first entry comprises a status field indicating whether the first entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry.

26. The apparatus of claim 25, wherein the status field further indicates whether the first replacement area is included in the user data area or in the spare area.

27. The apparatus of claim 16, wherein the first entry comprises:

a first status field identifying the first entry as a logical overwrite (LOW) entry;

a first data field indicating the location of the first area;

a second data field indicating the location of the first replacement area; and

a second status field indicating whether the first entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry and whether the first replacement area is included in the user data area or in the spare area.

28. The apparatus of claim 16, wherein the second entry comprises a status field indicating whether the second entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry.

29. The apparatus of claim 16, wherein the second entry comprises:

a first data field indicating the location of the second area; and

a second data field indicating the location of the second replacement area.

30. The apparatus of claim 16, wherein the second entry comprises:

a status field indicating whether the second entry is a re-allocated defect (RAD) or contiguous re-allocated defect (CRD) type entry;

a first data field indicating the location of the second area; and

a second data field indicating the location of the second replacement area.