Write-once optical disc and method for recording management information thereon

• US 7,516,273 B2
• Filed: 09/07/2004
• Issued: 04/07/2009
• Est. Priority Date: 09/08/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): BATAILLE, PIERRE MICHE
• Application Number:
  US10/934,495
• Publication Number:
  US 20050055500A1
• Time in Patent Office: 1,673 Days
• Field of Search: 711/170, 711/169, 711/118, 711/112, 711/154, 711/156, 369/47.22, 369/47.14, 369/53.31, 369/47.27, 369/100
• US Class Current: 711/112
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• 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 optical disc and a method and apparatus for recording management information of the write-once optical disc, are provided. The method includes closing an opened session by closing all opened sequential recording-units of the opened session, opening a new session having a new sequential recording-unit, and recording session start information on the recording medium. The session start information indicates whether or not the new sequential recording-unit is a start of the new session.

Claims

1. A method for optically recording management information on a computer readable recording medium including an opened session composed of at least one sequential recording-unit, the method comprising:

closing the opened session, the closing step including closing all opened sequential recording-units of the opened session to close the opened session;

opening a new session having a new sequential recording-unit; and

optically recording session start information on the computer readable recording medium, the session start information indicating whether or not the new sequential recording-unit is a start of the new session, wherein the session start information is used to distinguish sessions.

2. The method of claim 1, wherein in the recording step, the session start information is recorded in a sequential recording-unit information entry associated with the new sequential recording-unit.

3. The method of claim 2, wherein the sequential recording-unit information entry is recorded in a temporary disc management area of the computer readable recording medium.

4. The method of claim 2, wherein the session start information is represented with a session start flag.

5. The method of claim 1, wherein the step of closing the opened session further includes:

padding at least one un-recorded cluster of at least one opened sequential recording-unit to be closed, each of the at least one un-recorded cluster being composed of a plurality of sectors; and

recording padding identification information indicating whether the padding step is performed.

6. The method of claim 5, wherein the padding identification information includes a plurality of padding flags, wherein each of the padding flags is related to each of the sectors and indicates whether or not the related sector is padded.

7. The method of claim 1, further comprising:

recording, in a sequential recording-unit information on the computer readable recording medium, identification numbers of opened sequential recording-units on the computer readable recording medium.

8. The method of claim 7, wherein the step of closing the opened sequential recording-units, identification numbers of the closed sequential recording-units are removed from the sequential recording-unit information.

9. The method of claim 1, wherein the new sequential recording-unit has a start address but no end address.

10. A method of optically recording management information on a computer readable recording medium including an opened session composed of at least one sequential recording range (SRR), the method comprising:

closing the opened session, the closing step including closing all opened SRRs of the opened session to close the opened session, and padding at least one un-recorded unit of at least one of the opened SRRs of the opened session so as to provide stability to the computer readable recording medium; and

optically recording, on the computer readable recording medium, padding identification information indicating which unit is padded, wherein the padding identification information is used to distinguish a unit that is padded from a unit that is recorded with other data, and is used to manage a recording/reproducing operation of the computer readable recording medium.

11. The method of claim 10, wherein the padding identification information includes a plurality of padding flags each assigned to a sector of the at least one opened SRR, and the padding flags are set to a certain value depending on whether or not the assigned sector is padded.

12. The method of claim 11, wherein there are 32 padding flags corresponding respectively to 32 sectors of a cluster of the SRR.

13. The method of claim 10, further comprising:

recording, in an SRR information (SRRI) on the computer readable recording medium, identification numbers of all opened SRRs.

14. The method of claim 13, where in the step of closing the opened SRRs, identification numbers of the closed SRRs are removed from the SRRI.

15. The method of claim 10, further comprising:

recording session start information indicating whether a particular SRR is a start of a session.

16. A method of managing a computer readable recording medium, the computer readable recording medium having an opened session including one or more recording units to store user data sequentially, the method comprising:

optically recording opened recording unit information indicating which recording unit is opened and available to store the user data, wherein all opened recording units of the opened session are closed when closing the opened session; and

optically recording, on the computer readable recording medium, padding identification information indicating whether or not each of the opened recording units is padded with dummy data when closing the each of the opened recording units,

wherein the computer readable recording medium has one opened session and at most a predetermined number of opened recording units, and wherein the padding identification information is used to distinguish a unit that is padded from a unit that is recorded with other data, and is used to manage a recording/reproducing operation of the computer readable recording medium.

17. A computer readable recording medium comprising:

an opened session composed of at least one sequential recording-unit, wherein when closing the opened session, all opened sequential recording-units of the opened session are closed;

a new session having a new sequential recording-unit and created after the opened session is closed; and

session start information recorded on the computer readable recording medium, the session start information indicating whether or not the new sequential recording-unit is a start of the new session, wherein the session start information is used to distinguish sessions.

18. The computer readable recording medium of claim 17, wherein the session start information is recorded in a sequential recording-unit information entry associated with the new sequential recording-unit.

19. The computer readable recording medium of claim 18, wherein the sequential recording-unit information entry is recorded in a temporary disc management area of the computer readable recording medium.

20. The computer readable recording medium of claim 18, wherein the session start information is represented with a session start flag.

21. The computer readable recording medium of claim 17, wherein when closing the opened session, at least one un-recorded cluster of at least one opened sequential recording-unit is padded, each of the at least one un-recorded cluster being composed of a plurality of sectors, and the computer readable recording medium further comprises recording padding identification information indicating whether the padding is performed.

22. The computer readable recording medium of claim 21, wherein the padding identification information includes a plurality of padding flags, wherein each of the padding flags is related to each of the sectors and indicates whether or not the related sector is padded.

23. The computer readable recording medium of claim 17, further comprising:

identification numbers of opened sequential recording-units, the identification numbers being recorded in a sequential recording-unit information on the computer readable recording medium.

24. The computer readable recording medium of claim 23, where when closing the opened session, identification numbers of the closed sequential recording-units are removed from the sequential recording-unit information.

25. The computer readable recording medium of claim 17, wherein the new sequential recording-unit has a start address but no end address.

26. A computer readable recording medium comprising:

an opened session composed of at least one sequential recording range (SRR), wherein when closing the opened session, all opened SRRs of the opened session are closed, and at least one un-recorded unit of at least one of the opened SRRs of the opened session is padded so as to provide stability to the computer readable recording medium; and

padding identification information recorded on the computer readable recording medium and indicating which unit is padded, wherein the padding identification information is used to distinguish a unit that is padded from a unit that is recorded with other data, and is used to manage a recording/reproducing operation of the computer readable recording medium.

27. The computer readable recording medium of claim 26, wherein the padding identification information includes a plurality of padding flags each assigned to a sector of the at least one opened SRR, and the padding flags are set to a certain value depending on whether or not the assigned sector is padded.

28. The computer readable recording medium of claim 27, wherein there are 32 padding flags corresponding respectively to 32 sectors of a cluster of the SRR.

29. The computer readable recording medium of claim 26, further comprising:

identification numbers of opened SRRs, the identification numbers being recorded in an SRR information (SRRI) on the computer readable recording medium.

30. The computer readable recording medium of claim 29, where when closing the opened SRRs, identification numbers of the closed SRRs are removed from the SRRI.

31. The computer readable recording medium of claim 26, further comprising:

session start information recorded on the computer readable recording medium and indicating whether a particular SRR is a start of a session.

32. An apparatus for optically recording management information on a computer readable recording medium including an opened session composed of at least one sequential recording-unit, the apparatus comprising:

a recording/reproducing part configured to close the opened session by closing all opened sequential recording-units of the opened session, to open a new session having a new sequential recording-unit after the opened session has been closed, and to record session start information on the computer readable recording medium, the session start information indicating whether or not the new sequential recording-unit is a start of the new session, wherein the session start information is used to distinguish sessions.

33. The apparatus of claim 32, wherein the recording/reproducing part is configured to include the session start information into a sequential recording-unit information entry associated with the new sequential recording-unit, and record the sequential recording unit information entry in a temporary disc management area of the recording medium.

34. The apparatus of claim 32, wherein when closing the opened session, the recording/reproducing part is configured to:

pad at least one un-recorded cluster of at least one opened sequential recording-unit to be closed, each of the at least one un-recorded cluster being composed of a plurality of sectors; and

record, on the recording medium of the write-once optical disc, padding identification information indicating whether the at least one un-recorded cluster is padded.

35. The apparatus of claim 34, wherein the padding identification information includes a plurality of padding flags, wherein each of the padding flags is related to each of the sectors and indicates whether or not a related sector is padded.

36. The apparatus of claim 32, wherein the recording/reproducing part is configured to record, in sequential recording-unit information on the recording medium, identification numbers of opened sequential recording-units on the recording medium.

37. The apparatus of claim 32, wherein, when closing the opened sequential recording-units, the recording/reproducing part is configured to remove, from the sequential recording-unit information, identification numbers of sequential recording-units to be closed.

38. The apparatus of claim 32, wherein the new sequential recording-unit has a start address but no end address.

39. An apparatus for optically recording management information on a computer readable recording medium including an opened session composed of at least one sequential recording range (SRR), the apparatus comprising:

a recording/reproducing part configured to close the opened session by closing all opened SRRs of the opened session and selectively padding at least one un-recorded unit of at least one of the opened SRRs of the opened session, and to record padding identification information indicating which unit is padded, wherein the padding identification information is used to distinguish a unit that is padded from a unit that is recorded with other data, and is used to manage a recording/reproducing operation of the computer readable recording medium.

40. The apparatus of claim 39, wherein the padding identification information includes a plurality of padding flags each assigned to a sector of the at least one opened SRR, and the padding flags are set to a certain value depending on whether or not the assigned sector is padded.

41. The apparatus of claim 40, wherein there are 32 padding flags corresponding respectively to 32 sectors of a cluster of the SRR.

42. The apparatus of claim 39, wherein the recording/reproducing part is configured to record, in SRR information (SRRI) on the recording medium, identification numbers of all opened SRRs.

43. The apparatus of claim 41, wherein when closing the opened session the recording/reproducing part is configured to remove the identification numbers from the SRRI.

44. The apparatus of claim 39, wherein the recording/reproducing part is configured to record session start information indicating whether a particular SRR is a start of a session.

45. A computer readable recording medium having an opened session including one or more recording units to store user data sequentially, the computer readable recording medium comprising:

opened recording unit information indicating which recording unit is opened and available to store the user data, wherein all opened recording units of the opened session are closed when closing the opened session; and

padding identification information indicating whether or not each of the opened recording units is padded with dummy data when closing the each of the opened recording units,

wherein the computer readable recording medium has one opened session and at most a predetermined number of opened recording units, and wherein the padding identification information is used to distinguish a unit that is padded from a unit that is recorded with other data, and is used to manage a recording/reproducing operation of the computer readable recording medium.