Write-once optical disc, and method and apparatus for recording/playback management information on/from optical disc

• US 7,952,972 B2
• Filed: 12/19/2008
• Issued: 05/31/2011
• Est. Priority Date: 08/05/2003
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): Hindi; Nabil Z
• Application Number:
  US12/340,457
• Publication Number:
  US 20090129226A1
• Time in Patent Office: 893 Days
• Field of Search: 369/53.12, 369/53.13, 369/53.14, 369/53.15, 369/53.17, 369/53.1, 369/275.3, 369/47.27, 718/8
• 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 2020/1873 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 27/034 on discs G11B27/036, G11B27/038 take precedence

Abstract

An apparatus and method for recording and reproducing data are discussed. According to an embodiment, the present invention provides an apparatus for recording management information on a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until the recording medium is closed and a final management area for storing therein final management information when the recording medium is to be closed, the apparatus comprising a pickup adapted for recording data on the recording medium and a microcomputer configured to control the pickup to record data onto a first indicator when closing the recording medium so as to indicate that the recording medium is closed, the first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas.

Claims

1. An apparatus for recording management information on a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until the recording medium is closed and a final management area for storing therein final management information when the recording medium is to be closed, the apparatus comprising:

a pickup adapted for recording data on the recording medium; and

a microcomputer configured to control the pickup to record data onto a first indicator when closing the recording medium so as to indicate that the recording medium is closed, the first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas.

2. The apparatus of claim 1, wherein the first indicator consists of one cluster and the first head cluster of the first temporary management area is used as the first indicator.

3. The apparatus of claim 2, wherein the microcomputer is configured to control the pickup to record the latest temporary disc definition structure information stored in the one or more temporary management areas onto the first indicator when the recording medium is to be finalized.

4. The apparatus of claim 2, wherein the first temporary management area is located in a lead-in area of the recording medium.

5. The apparatus of claim 4, wherein the microcomputer is configured to control the pickup to record data onto a second indicator among one or more second indicators so as to indicate which temporary management area is currently available for use where the one or more second indicators respectively correspond, in a direction of descending address, to the temporary management areas except the first temporary management area.

6. The apparatus of claim 5, wherein each of the one or more second indicators consists of one cluster and one or more clusters starting from the second head cluster of the first defect management area are used as the one or more second indicators.

7. The apparatus of claim 5, wherein the microcomputer is configured to control the pickup to record temporary disc definition structure information stored first in a temporary management area currently available for use onto a second indicator corresponding to the temporary management area currently available for use when the temporary management area currently available for use becomes available.

8. The apparatus of claim 4, further comprising:

a host configured to send a record/reproduce command for a specific area of the recording medium via an interface, wherein the microcomputer is configured to control the pickup to perform recording/reproducing in the specific area according to the command from the host.

9. An apparatus for recording management information on a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until closing the recording medium and a final management area for storing therein final management information when the recording medium is to be closed, the apparatus comprising:

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

a data processor configured to convert a signal from the pickup into an appropriate signal value or modulate a to-be-recorded signal into an appropriate recording signal for the recording medium;

a servo configured to control the pickup to precisely read/record signals from/to the recording medium;

a memory configured to temporarily store information associated with the recording medium;

an interface configured to perform communication with an external device; and

a microcomputer configured to control operations of above elements—

the pickup, the pickup, the data processor, the servo, the memory and the interface—

in the apparatus, wherein the apparatus is configured to record data onto a first indicator, under the control of the microcomputer, when closing the recording medium so as to indicate that the recording medium is closed, the first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas.

10. The apparatus of claim 9, wherein the first indicator consists of one cluster and the first head cluster of the first temporary management area is used as the first indicator.

11. The apparatus of claim 10, wherein the apparatus is configured to record the latest temporary disc definition structure information stored in the one or more temporary management areas onto the first indicator, under the control of the microcomputer, when the recording medium is to be finalized.

12. The apparatus of claim 10, wherein the first temporary management area is located in a lead-in area of the recording medium.

13. The apparatus of claim 12, wherein the apparatus is configured to record data onto a second indicator among one or more second indicators, under the control of the microcomputer, so as to indicate which temporary management area is currently available for use where the one or more second indicators respectively correspond, in a direction of descending address, to the temporary management areas except the first temporary management area.

14. The apparatus of claim 13, wherein each of the one or more second indicators consists of one cluster and one or more clusters starting from the second head cluster of the first defect management area are used as the one or more second indicators.

15. The apparatus of claim 13, wherein the apparatus is configured to record temporary disc definition structure information stored first in a temporary management area currently available for use onto a second indicator corresponding to the temporary management area currently available for use, under the control of the microcomputer, when the temporary management area currently available for use becomes available.

16. The apparatus of claim 12, further comprising:

a host configured to send a record/reproduce command for a specific area of the recording medium via the interface, wherein the apparatus is configured to perform recording/reproducing in the specific area according to the command from the host.

17. An apparatus for reproducing management information from a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until closing the recording medium and a final management area for storing therein final management information when the recording medium is to be closed, the apparatus comprising:

a pickup configured to reproduce data from the recording medium;

a microcomputer configured to control the pickup to access a first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas; and

determine whether or not the recording medium has been closed based on whether the first indicator has recorded data or not.

18. The apparatus of claim 17, wherein the first indicator consists of one cluster and the first head cluster of the first temporary management area is used as the first indicator, wherein the microcomputer is configured to control the pickup to access the first head cluster in order to determine whether or not the recording medium has been closed.

19. The apparatus of claim 18, wherein when the recording medium has been closed the microcomputer is configured to control the pickup to read the final management information from the final management area.

20. The apparatus of claim 19, wherein when the recording medium has not been closed the microcomputer is configured to control the pickup to access one or more second indicators so as to determine a temporary management area currently available for use, where the one or more second indicators respectively correspond, in a direction of descending address, to the temporary management areas except the first temporary management area.

21. The apparatus of claim 20, wherein the microcomputer is configured to control the pickup to access the first temporary management area located in a lead-in area of the recording medium in order to access the first and second indicators.

22. The apparatus of claim 20, wherein each of the one or more second indicators consists of one cluster and one or more clusters starting from the second head cluster of the first defect management area are used as the one or more second indicators, wherein the microcomputer is configured to control the pickup to access the one or more clusters in order to determine which temporary management area is currently available for use.

23. The apparatus of claim 20, wherein the microcomputer is configured to determine a temporary management area corresponding to a second indicator having recorded data last as the temporary management area currently available for use.

24. The apparatus of claim 23, wherein the microcomputer is configured to control the pickup to reproduce, from at least one of sectors configuring the second indicator having recorded data last, temporary disc definition structure information identical to temporary disc definition structure information stored first in the temporary management area determined currently available for use.

25. The apparatus of claim 23, wherein the microcomputer is configured to control the pickup to reproduce the temporary management information from the temporary management area determined currently available for use.

26. The apparatus of claim 23, further comprising:

a host configured to send a record/reproduce command for a specific area of the recording medium via an interface, wherein the microcomputer is configured to control the pickup to perform recording/reproducing in the specific area according to the command from the host.

27. An apparatus for reproducing management information from a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until closing the recording medium and a final management area for storing therein final management information when the recording medium is to be closed, the apparatus comprising:

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

a data processor configured to convert a signal from the pickup into an appropriate signal value;

a servo configured to control the pickup to precisely read signals from the recording medium;

a memory configured to temporarily store information associated with the recording medium;

an interface configured to perform communication with an external device; and

a microcomputer configured to control operations of above elements—

the pickup, the pickup, the data processor, the servo, the memory and the interface—

in the apparatus, wherein the apparatus is configured to access, under control of the microcomputer, a first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas; and

determine whether or not the recording medium has been closed based on whether the first indicator has recorded data or not.

28. The apparatus of claim 27, wherein the first indicator consists of one cluster and the first head cluster of the first temporary management area is used as the first indicator, wherein the apparatus configured to access the first head cluster, under the control of the microcomputer, in order to determine whether or not the recording medium has been closed.

29. The apparatus of claim 28, wherein when the recording medium has been closed the apparatus is configured to read the final management information from the final management area under the control of the microcomputer.

30. The apparatus of claim 29, wherein when the recording medium has not been closed the apparatus is configured to access one or more second indicators, under the control of the microcomputer, so as to determine a temporary management area currently available for use where the one or more second indicators respectively correspond, in a direction of descending address, to the temporary management areas except the first temporary management area.

31. The apparatus of claim 30, wherein the apparatus is configured to access the first temporary management area located in a lead-in area of the recording medium, under the control of the microcomputer, in order to access the first and second indicators.

32. The apparatus of claim 30, wherein each of the one or more second indicators consists of one cluster and one or more clusters starting from the second head cluster of the first defect management area are used as the one or more second indicators, wherein the apparatus is configured to access the one or more clusters in order to determine which temporary management area is currently available for use under the control of the microcomputer.

33. The apparatus of claim 30, wherein the apparatus is configured to determine a temporary management area corresponding to a second indicator having recorded data last as the temporary management area currently available for use.

34. The apparatus of claim 33, wherein the apparatus is configured to reproduce, from at least one of sectors configuring the second indicator having recorded data last, temporary disc definition structure information identical to temporary disc definition structure information stored first in the temporary management area determined currently available for use under the control of the microcomputer.

35. The apparatus of claim 33, wherein the apparatus is configured to reproduce the temporary management information from the temporary management area determined currently available for use under the control of the microcomputer.

36. The apparatus of claim 33, further comprising:

a host configured to send a record/reproduce command for a specific area of the recording medium via the interface, wherein the apparatus is configured to perform recording/reproducing in the specific area according to the command from the host.

37. A method of recording management information on a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until the recording medium is closed and a final management area for storing therein final management information when the recording medium is to be closed, the method comprising a step of:

recording data onto a first indicator when the recording medium is closed so as to indicate that the recording medium is closed, the first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas.

38. A method of reproducing management information from a writable recording medium, the recording medium including one or more temporary management areas being used in a designated order for storing therein temporary management information until closing the recording medium and a final management area for storing therein final management information when the recording medium is to be closed, the method comprising steps of:

accessing a first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas; and

determining whether or not the recording medium has been closed based on whether the first indicator has recorded data or not.

39. An optical computer-readable recording medium comprising:

one or more temporary management areas being used in a designated order for storing therein temporary management information until closing the recording medium;

a final management area for storing therein final management information when the recording medium is to be closed; and

a first indicator located at the most front position of a first temporary management area being used first among the one or more temporary management areas and indicating whether or not the recording medium has been closed.

40. The optical computer-readable recording medium of claim 39, wherein the first indicator consists of one cluster and the first head cluster of the first temporary management area is used as the first indicator.

41. The optical computer-readable recording medium of claim 40, wherein when the recording medium has closed the first indicator has recorded data therein.

42. The optical computer-readable recording medium of claim 41, further comprising:

one or more second indicators respectively corresponding, in a direction of descending address, to the temporary management areas except the first temporary management area and indicating which temporary management area is currently available for use.

43. The optical computer-readable recording medium of claim 42, wherein the first temporary management area is located in a lead-in area of the recording medium.

44. The optical computer-readable recording medium of claim 42, wherein each of the one or more second indicators consists of one cluster and one or more clusters starting from the second head cluster of the first defect management area are used as the one or more second indicators.

45. The optical computer-readable recording medium of claim 44, wherein when a temporary management area has been currently available for use a cluster corresponding to the temporary management area having been currently available for use has recorded data therein.