Write-once optical disc, and method and apparatus for recording/reproducing data on/from the optical disc

• US 7,483,355 B2
• Filed: 10/19/2004
• Issued: 01/27/2009
• Est. Priority Date: 10/20/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): Dinh; Tan X
• Assistant Examiner(s): NGUYEN, LINH THI
• Application Number:
  US10/967,142
• Publication Number:
  US 20050083815A1
• Time in Patent Office: 1,561 Days
• Field of Search: 369/53.15, 369/47.14, 714/5
• US Class Current: 369/53.15
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/10861 Finalising a record carrier after a recording operation, e.g. to ensure compatibility with a ROM medium
• 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

Abstract

A write-once recording medium structure and an apparatus and method for recording final management information on the recording medium, are provided. The recording medium includes a temporary defect management area (TDMA) and a defect management area (DMA). The method includes transferring information recorded in the TDMA to the DMA of the recording medium and recording the transferred information in the DMA as final management information. The final management information includes at least one defect list and either space bit map information or sequential recording range information. The position information on one or all valid defect lists is recorded in the DMA.

Claims

1. A method for recording management information on a recording medium, the recording medium including a first management area being used before finalizing the recording medium and a second management area being used after finalizing the recording medium, the method comprising steps of:

(a) updating management information and recording the updated management information into the first management area, and recording temporary disc definition structure (TDDS) which includes first position information on the updated management information recorded in the first management area and non-meaningful information as second position information on a valid defect list; and

(b) recording latest management information recorded in the first management area into the second management area as final management information when the recording medium is to be finalized, the final management information including at least one defect list and record state information of the recording medium,

wherein the recording step includes;

storing, in the second management area, third position information on at least one valid defect list from among the at least one defect list recorded in the second management area.

2. The method of claim 1, wherein the third position information indicates only a position of a first valid defect list from among the at least one defect list recorded in the second management area.

3. The method of claim 1, wherein

the information recorded in the first management area includes temporary disc definition structure (TDDS) information which has 00h or FFh stored as the non-meaningful information at a place corresponding to the second position information.

4. The method of claim 1, wherein the third position information includes a first physical sector number of each of the at least one valid defect list.

5. The method of claim 1, wherein the step of (b) is repeated for up to seven times per second management area of the recording medium.

6. The method of claim 1, wherein the step of (b) records one of a Sequential Recording Range Information (SRRI) and a Space Bit Map (SBM) as the record state information.

7. A optical disc, comprising:

at least one recording layer; and

a first management area being used before finalizing the optical disc and a second management area being used after finalizing the optical disc on the at least one recording layer,

wherein the first management area stores therein management information and temporary disc definition structure (TDDS) which includes first position information on updated management information recorded in the first management area and non-meaningful information as second position information on a valid defect list,

the second management area stores therein latest management information recorded in the first management area as part of final management information when the optical disc is finalized, and

the final management information includes at least one defect list, record state information of the optical disc, and third position information on at least one valid defect list from among the at least one defect list recorded in the second management area.

8. The optical disc of claim 7, wherein the third position information indicates only a position of a first valid defect list from among the at least one defect list recorded in the second management area.

9. The optical disc of claim 8, wherein the third position information is a first physical sector number of the first valid defect list.

10. The optical disc of claim 7, wherein the second management area includes:

a first area for storing therein the third position information along with the record state information; and

a plurality of second areas each for optionally storing a defect list.

11. The optical disc of claim 7, wherein

the first management area stores therein 00h or FFh as the non-meaningful information at a place corresponding to the second position information.

12. The optical disc of claim 7, wherein the third position information includes a first physical sector number of each of the at least one valid defect list.

13. The optical disc of claim 7, wherein the second management information includes:

a first area for storing therein the third position information along with the record state information; and

a plurality of second areas each for storing a copy of a defect list.

14. The recording medium of claim 7, wherein the second management area stores therein one of a Sequential Recording Range Information (SRRI) and a Space Bit Map (SBM) as the record state information.

15. An apparatus for recording final management information on a recording medium, the recording medium including a first management area being used before finalizing the recording medium and a second management area being used after finalizing the recording medium, the apparatus comprising:

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

a microcomputer operatively coupled to the optical pickup and configured to update management information and control the optical pickup to record the undated management information into the first management area,

control the optical pickup to record temporary disc definition structure (TDDS) into the first management area, the temporary disc definition structure (TDDS) including first position information on the updated management information recorded in the first management area and non-meaningful information as second position information on a valid defect list,

control the optical pickup to record latest management information recorded in the first management information into the second management information as part of final management information when the recording medium is to be finalized, and

control the optical pickup to record at least one defect list, record state information, and third position information on at least one valid defect list from among the at least one defect list recorded in the second management area as the final management information.

16. The apparatus of claim 15, wherein the microcomputer is configured to control the optical pickup to record information that indicates only a position of first valid defect list from among the at least one defect list recorded in the second management area as the third position information.

17. The apparatus of claim 15, wherein the microcomputer is configured to control the optical pickup to record the third position information as part of disc definition structure (DDS) information within the final management information.

18. The apparatus of claim 15, wherein the microcomputer is configured to control the optical pickup to record a first physical sector number of the first valid defect list as the third position information.

19. The apparatus of claim 15, wherein the microcomputer is configured to control the optical pickup to record one of space bitmap information (SBM) and sequential recording range information (SRRI) as the record state information.

20. The apparatus of claim 15, wherein the microcomputer is configured to

control the optical pickup to record a defect list into one of defect list areas of the second management area,

verify if the recorded defect list area is defective, and

control the optical pickup to record, into the recording medium, position information on the recorded defect list area as the third position information if the recorded defect list area is not defective.

21. The apparatus of claim 20, wherein the microcomputer is configured to control the optical pickup to record the defect list into each of next available defect list areas of the second management area.

22. The apparatus of claim 20, wherein the microcomputer is configured to control the optical pickup to fill up remaining defect list areas with designated information.

23. The apparatus of claim 20, wherein the recording medium has seven defect list areas per second management area of the recording medium.

24. The apparatus of claim 15, wherein

the microcomputer is configured to control the optical pickup to record 00h or FFh as the non-meaningful information at a place corresponding to the second position information.

25. The apparatus of claim 15, wherein the microcomputer is configured to control the pickup to record, as the second position information, a first physical sector number of each of the at least one valid defect list into the second management area.

26. A method of reproducing data from a recording medium, the recording medium including a first management area being used before finalizing the recording medium and a second management area being used after finalizing the recording medium, the method comprising steps of:

reading management information from the first management area based on temporary disc definition structure (TDDS) before the recording medium is finalized, the temporary disc definition structure (TDDS) including first position information on the management, information updated and recorded in the first management area and non-meaningful information as second position information on a valid defect list, and reproducing data from the recording medium based on the management information; and

reading at least one valid defect list from among the final defect management information recorded in the second management information based on third position information of at least one valid defect list, the final management information including at least one defect list and record state information of the recording medium after the recording medium is finalized, and reproducing data from the recording medium based on the at least one valid defect list and the record state information.

27. The method of claim 26, wherein the record state information is one of a Sequential Recording Range Information (SRRI) and a Space Bit Map (SBM).

28. The method of claim 26, wherein the first management area stores therein 00h or FFh as the non-meaningful information at a place corresponding to the second position information, and the third position information includes a first physical sector number of a first valid defect list recorded in the second management area.

29. The apparatus of claim 26, wherein the non-meaningful information read at a place corresponding to the second position information by the optical pickup is 00h or FFh, and the third position information read by the optical pickup is a first physical sector number of a first valid defect list recorded in the second management area.

30. An apparatus for reproducing data from a recording medium, the recording medium including a first management area being used before finalizing the recording medium and a second management area being used after finalizing the recording medium, the apparatus comprising:

an optical pickup to read data from the recording medium; and

a microcomputer operatively coupled to the optical pickup and configured to

control the pickup to read management information from the first management area based on temporary disc definition structure (TDDS) before the recording medium is finalized, the temporary disc definition structure (TDDS) including first position information on the management information updated and recorded in the first management area and non-meaningful information as second position information on a valid defect list,

control the optical pickup to reproduce data from the recording medium based on the management information,

control the optical pickup to read at least one valid defect list from among the final defect management information recorded in the second management information based on third position information of at least one valid defect list, the final management information including at least one defect list and record state information of the recording medium, and

control the optical pickup to reproduce data from the recording medium based on the at least one valid defect list and the record state information.

31. The apparatus of claim 30, wherein the microcomputer is configured to control the pickup to read one of a Sequential Recording Range Information (SRRI) and a Space Bit Map (SBM) as the record state information from the recording medium.