APPARATUS AND METHOD FOR RECORDING DATA IN INFORMATION RECORDING MEDIUM TO WHICH EXTRA ECC IS APPLIED OR REPRODUCING DATA FROM THE MEDIUM

• US 20080034269A1
• Filed: 01/17/2007
• Published: 02/07/2008
• Est. Priority Date: 08/03/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hwang, Sung-hee, Kwon, Joon-hwan, Chung, Hyun-kwon, Park, Hyun-jeong
• Granted Patent: US 7,975,207 B2
• Time in Patent Office: Days
• US Class Current: 714/756
• CPC Class Codes: G11B 20/1833 by adding special lists or symbols to the coded information G11B20/1806, G11B20/1866 take precedence
• CPC Class Codes: G11B 20/1866 by interleaving G11B20/1809 takes precedence
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/2703 the interleaver involving at least two directions
• CPC Class Codes: H03M 13/2909 Product codes
• CPC Class Codes: H03M 13/6356 by repetition or insertion of dummy data, i.e. rate reduction

Abstract

A data recording and/or reproducing apparatus and method for an information recording medium includes: an extra ECC encoder; and an extra ECC controller determining whether extra ECC is applied to the information recording medium, and controlling the extra ECC encoder to generate an extra parity data block corresponding to data that is to be recorded on the information storage medium. The extra ECC encoder includes: an extra parity generator generating an extra ECC data block based on data that is to be recorded on the information recording medium, performing ECC on the extra ECC data block, and generating at least one extra parity. An extra parity interleaver interleaves the at least one extra parity and generating the extra parity data block.

Claims

1. A recording apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the recording apparatus comprising:

an extra ECC encoder to generate an extra parity data block, the extra ECC encoder comprising;

an extra parity generator to generate an extra ECC data block based on ECC encoded data that is to be recorded on the information recording medium, to perform ECC on the generated extra ECC data block to obtain an extra ECC block, and to generate at least one extra parity from the obtained extra ECC block, and

an extra parity interleaver to interleave the generated at least one extra parity and to generate the extra parity data block; and

an extra ECC controller determining whether extra ECC is applied to the information recording medium, and controlling the extra ECC encoder to generate the extra parity data block corresponding to data that is to be recorded on the information storage medium.

2. The recording apparatus of claim 1, wherein:

the extra ECC controller further sets an extra ECC application rate, and whether an extra ECC process performed by the extra ECC controller is applied to the information recording medium, and

the extra ECC application rate is set in advance or according to an input from a user interface.

3. The recording apparatus of claim 1, wherein the extra ECC controller further generates extra ECC management information for managing an extra ECC process performed by the extra ECC controller.

4. The recording apparatus of claim 3, wherein the extra ECC management information includes:

information indicating whether the extra ECC process is applied to the information recording medium, and

information indicating a mapping relation between a location on the information recording medium at which the ECC encoded data is to be recorded and a location on the information recording medium at which the extra parity data block is to be recorded.

5. The recording apparatus of claim 3, wherein the extra ECC controller assigns an area on the information recording medium on which the extra parity data block and the extra ECC management information are recorded.

6. The recording apparatus of claim 2, wherein:

the extra parity interleaver collects and interleaves extra parities equal to or less than N at least one time, if the extra ECC application rate is 1/N.

7. The recording apparatus of claim 1, wherein the extra parity generator generates the extra ECC data block, from an error correction block generated from the ECC encoded data, the ECC encoded data, or other data generated from the ECC encoded data through a series of process steps.

8. A reproducing apparatus for an information recording medium in which data and an extra parity data block are subjected to error correction coding (ECC) and stored, the reproducing apparatus comprising:

an extra ECC controller determining whether ECC encoded data is to be reproduced from the information recording medium using an extra ECC process, and, if the ECC encoded data is to be reproduced from the information recording medium using the extra ECC process, obtaining from the information recording medium an extra parity data block corresponding to the ECC encoded data that is to be reproduced;

an extra parity deinterleaver deinterleaving the obtained extra parity data block and obtaining at least one extra parity from the deinterleaved extra parity data block;

an extra ECC block decoder generating an extra ECC block by combining an extra ECC data block with the obtained at least one extra parity, and performing error correction on the generated extra ECC block, the extra ECC data block having been generated from an ECC block for the ECC encoded data that is to be reproduced;

an extra ECC block updater updating the extra ECC data block obtained from the error-corrected extra ECC block to a corresponding ECC block for the ECC encoded data that is to be reproduced; and

an ECC decoder performing error correction on the updated ECC block to obtain the data.

9. The reproducing apparatus of claim 8, wherein the extra ECC controller obtains location information of the extra parity data block and information indicating whether the extra ECC process is applied to the information recording medium, from extra ECC management information read from the information recording medium.

10. A recording apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the recording apparatus comprising:

a file system drive outputting a data writing command to record the data; and

a physical drive receiving the data writing command from the file system drive to perform an extra ECC process by generating an extra parity data block corresponding to the data after ECC encoding, to record the extra parity data block on the information recording medium, and to manage and perform an extra ECC process.

11. The recording apparatus of claim 10, wherein the physical drive comprises:

an extra ECC encoder comprising;

an extra parity generator generating an extra ECC data block based on the ECC encoded data that is to be recorded on the information recording medium, and generating at least one extra parity by performing ECC process on the generated extra ECC data block; and

an extra parity interleaver generating the extra parity data block by interleaving the generated at least one extra parity; and

an extra ECC controller determining whether the extra ECC process is applied to the information recording medium, and, when the extra ECC process is applied to the information recording medium, controlling the extra ECC encoder to generate the extra parity data block corresponding to the ECC encoded data that is to be recorded on the information recording medium.

12. The recording apparatus of claim 11, wherein the extra ECC controller further generates extra ECC management information which includes information indicating a mapping relation between a location on the information recording medium at which the ECC encoded data is to be recorded and a location on the information recording medium at which the extra parity data block is to be recorded.

13. The recording apparatus of claim 12, wherein the extra ECC controller assigns an area of the information recording medium on which the extra parity data block and the extra ECC management information are recorded, and controls the apparatus to record the extra parity data block and the extra ECC management information on the assigned area.

14. A reproducing apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the reproducing apparatus comprising:

a file system drive outputting a data read command; and

a physical drive receiving the data read command from the file system drive, and performing an extra ECC process by reading from the information recording medium an extra parity data block corresponding to ECC data recorded on the information recording medium, performing error correction on the extra parity data block, and transferring the error-corrected extra parity data block to the file system drive for use in ECC decoding the ECC data.

15. The reproducing apparatus of claim 14, wherein the physical drive comprises:

an extra ECC controller determining whether the ECC data must be reproduced from the information recording medium using the extra ECC process, and obtaining the extra parity data block corresponding to the ECC data that is to be reproduced from the information recording medium;

an extra parity deinterleaver deinterleaving the extra parity data block and obtaining at least one extra parity from the deinterleaved extra parity data block;

an extra ECC block decoder generating an extra ECC block by combining an extra ECC data block with the at least one extra parity, and performing error correction on the generated extra ECC block, the extra ECC data block being created from an ECC block for the ECC data;

an extra ECC block updater updating the extra ECC data block obtained from the error-corrected extra ECC block to a corresponding ECC block; and

an ECC decoder performing error correction on the updated ECC block to obtain the data.

16. The reproducing apparatus of claim 15, wherein:

the extra ECC controller uses extra ECC management information to obtain the extra parity data block, and

the extra ECC management information includes information indicating a mapping relation between a location on the information recording medium of the ECC data and a location on the information recording medium of the extra parity data block.

17. The reproducing apparatus of claim 16, wherein the extra ECC controller obtains information indicating whether the extra ECC process is applied to the information recording medium and location information of the extra parity data block, from the extra ECC management information read from the information recording medium.

18. A recording apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the recording apparatus comprising:

a physical drive transferring/receiving at least one part of an ECC block of user data; and

a file system drive receiving the at least one part of the ECC block from the physical drive, generating an extra parity data block using the at least one block of the ECC block, and managing extra ECC recording of the generated extra parity data block.

19. The recording apparatus of claim 18, wherein:

the file system drive comprises;

an extra ECC encoder comprising;

an extra parity generator generating an extra ECC data block based on the at least one part of an ECC block that is to be recorded on the information recording medium, performing ECC on the extra ECC data block, and generating at least one extra parity; and

an extra parity interleaver generating the extra parity data block by interleaving the generated at least one extra parity; and

an extra ECC controller determining whether the extra ECC recording is applied to the information recording medium, and if the extra ECC recording is applied, receiving the at least one part of the ECC block from the physical drive, controlling the extra ECC encoder to generate the extra parity data block from the received part of the ECC block, and allowing the physical drive to record the generated extra parity data block on the information recording medium.

20. The recording apparatus of claim 19, wherein the extra ECC controller further generates extra ECC management information which includes information indicating a mapping relation between a location on the information recording medium of the ECC block of the user data that is to be recorded and a location at which the extra parity data block is recorded on the information recording medium, and allows the physical drive to record the extra ECC management information on the information recording medium.

21. The recording apparatus of claim 20, wherein the extra ECC controller assigns an area on the information recording medium on which the extra parity data block and the extra ECC management information are recorded, and allows the physical drive to record the extra parity data block and the extra ECC management information in the assigned area.

22. A reproducing apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the reproducing apparatus comprising:

a physical drive reading, from the information recording medium, an extra parity data block corresponding to ECC encoded user data, and transferring the read extra parity data block, in response to a data read command; and

a file system drive performing error correction on the transferred extra parity data block received from the physical drive, and managing and performing an extra ECC process using the data read command and/or the extra panty data block.

23. The reproducing apparatus of claim 22, wherein the file system drive comprises:

an extra ECC controller determining whether the ECC encoded user data must be reproduced from the information recording medium using the extra ECC process, and obtaining the extra parity data block corresponding to the ECC encoded user data that is to be reproduced from the information recording medium;

an extra parity deinterleaver obtaining at least one extra parity by deinterleaving the obtained extra parity data block; and

an extra ECC block decoder generating an extra ECC block by combining an extra ECC data block with the obtained at least one extra parity, and performing error correction on the generated extra ECC block, the extra ECC data block being created from an ECC block for the ECC encoded user data that is to be reproduced; and

an extra ECC block updater updating the extra ECC data block obtained from the error-corrected extra ECC block to a form the ECC block.

24. The reproducing apparatus of claim 23, wherein:

the extra ECC controller uses extra ECC management information while performing the extra ECC process, and

the extra ECC management information includes information indicating a mapping relation between a location on the information recording medium of the ECC encoded user data and a location on the information recording medium of the extra parity data block.

25. The reproducing apparatus of claim 24, wherein, from the extra ECC management information read from the information recording medium, the extra ECC controller obtains information indicating whether the extra ECC process is applied to the information recording medium and location information of the extra parity data block.

26. A recording apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the recording apparatus comprising:

a file system drive transmitting t a command to generate an extra parity data block from ECC encoded user data; and

a physical drive receiving the transmitted command and being controlled by the file system drive to generate the extra parity data block from the ECC encoded user data and to record the extra parity data block on the information recording medium according to the transmitted command,

wherein the file system drive performs an extra ECC process together with the physical drive to create and record the extra parity data block.

27. The recording apparatus of claim 26, wherein the file system drive:

generates and manages extra ECC management information which includes information indicating a mapping relation between a location on the information recording medium at which the ECC encoded user data is recorded and a location on the information recording medium at which the extra parity data block is recorded, and

assigns an area of the information recording medium at which the extra parity data block and the extra ECC management information are recorded.

28. The recording apparatus of claim 26, wherein:

the file system drive generates and manages extra ECC management information which includes information indicating a mapping relation between a location on the information recording medium at which the ECC encoded user data is recorded and a location on the information recording medium at which the extra parity data block is recorded, and

the physical drive assigns an area of the information recording medium at which the extra parity data block and the extra ECC management information are recorded.

29. A reproducing apparatus for an information recording medium in which data is subjected to error correction coding (ECC) and stored, the reproducing apparatus comprising:

a file system drive transmitting a command to read ECC encoded user data from the information recording medium;

a physical drive to receive the transmitted command and being controlled by the file system drive to read, from the information recording medium, an extra parity data block corresponding to the ECC encoded user data, to perform error correction on the read extra parity data block, and to transfer the error-corrected extra parity data block to the file system drive,

wherein the file system drive performs an extra ECC process together with the physical drive to decode the extra parity data block and the ECC encoded user data.

30. The reproducing apparatus of claim 29, wherein the file system drive generates and manages extra ECC management information which includes information indicating a mapping relation between a location on the information recording medium at which the ECC encoded user data is recorded and a location on the information recording medium at which the extra parity data block is recorded.

31. The reproducing apparatus of claim 29, wherein:

the file system drive generates and manages extra ECC management information which includes information indicating a mapping relation between a location on the information recording medium at which the ECC encoded user data is recorded and a location on the information recording medium at which the extra parity data block is recorded, and

the physical drive assigns an area on the information recording medium at which the extra parity data block and the extra ECC management information are recorded.

32. A method of recording data in an information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

determining whether an extra ECC process is applied to the information recording medium; and

if the extra ECC process is applied to the information recording medium,

generating an extra ECC data block based on ECC encoded data that is to be recorded on the information recording medium,

performing ECC on the generated extra ECC data block,

generating at least one extra parity using the generated extra ECC data block,

generating an extra parity data block by interleaving the generated at least one extra parity, and

recording the generated extra parity data block on the information recording medium.

33. The method of claim 32, further comprising setting an extra ECC application rate, wherein whether the extra ECC process is applied to the information recording medium and the extra ECC application rate are set in advance or according to an input from a user interface.

34. The method of claim 32, further comprising generating extra ECC management information for managing the extra ECC process.

35. The method of claim 34, wherein the generated extra ECC management information includes:

information indicating whether the extra ECC process is applied, and

information indicating a mapping relation between a location on the information recording medium at the ECC encoded data is to be recorded and a location on the information recording medium at which the generated extra parity data block is to be recorded.

36. The method of claim 34, further comprising assigning an area of the information recording medium at which the generated extra parity data block and the generated extra ECC management information are recorded.

37. The method of claim 32, wherein the extra ECC data block is generated from an error-corrected block generated from the ECC encoded data, the ECC encoded data, or other data generated from the ECC encoded data through a series of process steps.

38. A method of reproducing data from an information recording medium in which data and an extra parity data block are subjected to error correction coding (ECC) and stored, the method comprising:

determining whether ECC encoded data is to be reproduced from the information recording medium using an extra ECC process; and

if it is determined that the extra ECC process is to be used,

reading, from the information recording medium, an extra parity data block corresponding to the ECC encoded data that is to be reproduced,

deinterleaving the read extra parity data block,

obtaining at least one extra parity from the deinterleaved extra parity data block,

generating an extra ECC block by combining an extra ECC data block with the obtained at least one extra parity, and performing error correction on the generated extra ECC block, the extra ECC data block having been generated from an ECC block for the ECC encoded data that is to be reproduced,

updating the extra ECC data block obtained from the error-corrected extra ECC block to a corresponding ECC block; and

performing error correction on the updated ECC block.

39. The method of claim 38, further comprising reading extra ECC management information from the information recording medium to obtain information indicating whether the extra ECC process is used with the information recording medium and location information of the extra parity data block.

40. A method of recording data in an information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

transferring a data write command to a physical drive of an apparatus from a file system drive of the apparatus; and

at the physical drive, receiving the data write command from the file system drive, generating an extra parity data block corresponding to ECC encoded data, recording the extra parity data block on the information recording medium, and managing and performing extra ECC by the physical drive with respect to the of the extra parity data block and the ECC encoded data.

41. A method of reproducing data from information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

transferring a file system drive of an apparatus a data read command to a physical drive of the apparatus; and

at the physical drive, receiving the data read command from the file system drive, reading an extra parity data block from the information recording medium and which corresponds to ECC encoded data to be reproduced, performing error correction on the extra parity data block, and transferring the error-corrected extra parity data block to the file system drive.

42. A method of recording data in an information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

transferring and/or receiving from a physical drive of an apparatus at least one part of an ECC block of user data with respect to a file system drive of the apparatus; and

at the file system drive, receiving the at least one part of the ECC block from the physical drive, generating an extra parity data block from the ECC block, and performing recording of extra ECC process by recording the generated extra parity data block.

43. A method of reproducing data from an information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

at a physical drive of an apparatus and in response to a data read command sent from the file system drive, reading an extra parity data block corresponding to ECC encoded user data from the information recording medium, and transferring the extra parity data block to the file system drive; and

at the file system drive, performing error correction on the transferred extra parity data block received from the physical drive, and managing and performing extra ECC with respect to the extra parity data block and the ECC encoded user data.

44. A method of recording data in an information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

at a file system drive of an apparatus, controlling a physical drive of the apparatus to generate an extra parity data block for ECC encoded user data; and

the physical drive being controlled by the file system drive to generate the extra parity data block from the user data and record the generated extra parity data block on the information recording medium such that the file system drive performs an extra ECC recording process together with the physical drive.

45. A method of reproducing data from an information recording medium in which data is subjected to error correction coding (ECC) and stored, the method comprising:

at a file system drive of an apparatus, controlling a physical drive of the apparatus to read ECC encoded user data from the information recording medium; and

the physical drive being controlled by the file system drive to read an extra parity data block corresponding to the read ECC encoded user data from the information recording medium, perform error correction on the read extra parity data block, and transfer the error-corrected extra parity data block to the file system drive such that the file system drive performs an extra ECC reproducing process together with the physical drive.

46. A recording and/or reproducing apparatus for an information recording medium, comprising:

an optical pickup;

a first ECC encoder/decoder to ECC encode/decode data transferred with respect to the information recording medium in units of ECC blocks;

a second ECC encoder/decoder to generate extra ECC blocks based on the ECC blocks using extra parity data blocks, each of the extra parity data blocks including at least one extra parity from the corresponding extra ECC block; and

a controller to control the optical pickup to transfer the ECC data with respect to the information recording medium, to control the first ECC encoder/decoder to encode/decode the data to be transferred in the ECC blocks, and controls the second ECC encoder/decoder to generate the extra parity data block corresponding to data that is to be recorded on the information storage medium and/or to obtain from the extra parity data blocks stored on the information storage medium the corresponding extra parities for the data that is to be reproduced from the information storage medium using the extra ECC block.

47. The recording and/or reproducing apparatus of claim 46, wherein controller further transfers extra ECC management information with respect to the information recording medium, and uses the extra ECC management information to relate the data to be recorded and/or reproduced with the corresponding extra parity data blocks.

48. The recording and/or reproducing apparatus of claim 47, wherein the extra ECC management information comprises location information connecting the data to be recorded and/or reproduced and location information of the corresponding extra parity data blocks.

49. The recording and/or reproducing apparatus of claim 46, wherein:

the extra parity data blocks are recorded on a first area of the information recording medium,

the data is recorded on a second area of the information recording medium other than the first area, and

the controller further transfers the data with respect to the second area and the extra parity data blocks with respect to the first area.

50. The recording and/or reproducing apparatus of claim 49, wherein:

the information recording medium includes a user data area and a management information area including management information used by the controller to manage the user data area, and

the user data area includes the first and second areas.

51. The recording and/or reproducing apparatus of claim 50, wherein controller further transfers extra ECC management information with respect to the second area, and uses the extra ECC management information to relate the data to be recorded and/or reproduced with respect to the first area with the corresponding extra parity data blocks of the second area.

52. The recording and/or reproducing apparatus of claim 46, wherein:

the first ECC encoder/decoder ECC encodes/decodes in units of the ECC blocks according to a Reed-Solomon Product Code (RSPC) format, and

the second ECC encoder/decoder generates the extra ECC blocks according to the RSPC format.

53. A recording and/or reproducing apparatus for use with an information recording medium, the apparatus comprising:

an optical pickup;

an ECC encoder to ECC encode user data to generate ECC blocks having user data blocks, to ECC encode the user data blocks using corresponding extra parities to generate extra ECC blocks, and to form extra parity data blocks from the extra parities of the generated extra ECC blocks; and

a controller to control the optical pickup to record the ECC blocks in a first area of the information recording medium, and to record the extra parity data blocks in a second area of the information recording medium.

54. The recording apparatus of claim 53, wherein:

the ECC encoder, to form the extra parity data blocks, uses the extra parities of the generated extra ECC blocks to form parity ECC blocks, interleaves the extra parities included in the formed parity ECC blocks to obtain the extra parity data blocks, and forms extra parity ECC blocks, and

the controller, to record the extra parity data blocks, controls the optical pickup to record the extra parity ECC blocks in the second area of the information recording medium.

55. The recording apparatus of claim 54, wherein the controller further:

generates extra ECC management information to manage the ECC blocks and the extra parity ECC blocks, and

controls the optical pickup to record the extra ECC management information in the second area of the information recording medium.

56. The recording apparatus of claim 53, wherein the ECC encoder comprises:

a first ECC encoder to ECC encode the user data blocks to generate the ECC blocks, and

a second ECC encoder including;

an extra parity generator to generate the extra ECC data blocks from the user data blocks in the generated ECC blocks, to perform ECC on the generated extra ECC data blocks to obtain the extra ECC blocks, and to generate the extra parities from the obtained extra ECC blocks, and

an extra parity interleaver to interleave the generated extra parities and to generate the extra parity data block.

57. An information recording medium, comprising:

a first area including error correction coding (ECC) encoded user data;

a second area other than the first area and including extra parity data blocks formed from extra parities of extra ECC blocks related to the ECC encoded user data;

an extra ECC management information area having extra ECC management information used by a recording and/or reproducing apparatus to decode the ECC encoded user data of the first area with the extra parity data blocks by re-forming the extra ECC blocks related to the ECC user data; and

a management area including management information used by the recording and/or reproducing apparatus to manage the first area, the second area, and the extra ECC management information area.