RECORDING AND/OR REPRODUCING METHOD, RECORDING AND/OR REPRODUCING APPARATUS AND INFORMATION STORAGE MEDIUM

• US 20090122682A1
• Filed: 04/21/2008
• Published: 05/14/2009
• Est. Priority Date: 11/08/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hwang, Sung-hee
• Granted Patent: US 8,370,692 B2
• Time in Patent Office: Days
• US Class Current: 369/94
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 20/1262 with more than one format/standard, e.g. conversion from CD-audio format to R-DAT format
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2007/0013 for carriers having multiple discrete layers
• CPC Class Codes: G11B 2020/1836 using a Reed Solomon [RS] code
• CPC Class Codes: G11B 2020/185 using an low density parity check [LDPC] code
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/235 Multilayer discs, i.e. multiple recording layers accessed from the same side
• CPC Class Codes: G11B 2220/2537 Optical discs
• 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 information storage medium including two or more recording layers to reproduce or record data by using a same reproducing and/or recording optical system per layer includes error correction code (ECC) blocks recorded onto the two or more recording layers by using two or more data formats used to store user data.

Claims

1. An information storage medium comprising two or more recording layers on which data is recorded on and/or reproduced from by using a same recording and/or reproducing optical system for each of the two or more recording layers, wherein error correction code (ECC) blocks are recorded onto the two or more recording layers by using two or more data formats used to store user data.

2. The information storage medium of claim 1, wherein an ECC block is recorded onto a recording layer having a cover layer with a first thickness by using a data format from among the two or more data formats that has a first error correction performance, and an ECC block is recorded onto another recording layer having another cover layer with a second thickness which is thinner than the first thickness by using a data format from among the two or more data formats that has a second error correction performance which is relatively high compared to the first error correction performance.

3. The information storage medium of claim 1, wherein each of the two or more recording layers comprises a disc management information area separate from a data area in which the user data is recorded, onto which at least one of the ECC blocks are recorded by using the same data format for each of the disc management information areas.

4. The information storage medium of claim 1, wherein first replacement data for replacing first user data of a first type ECC block having a first data format by performing a defect management operation or a logical overwrite (LOW) operation is stored onto the first type ECC block having the first data format, and second replacement data for replacing second user data of a second type ECC block having a second data format by performing the defect management operation or the LOW operation is stored onto the second type ECC block having the second data format.

5. The information storage medium of claim 4, further comprising:

a first spare area formed in one of the recording layers onto which the first type ECC block is recorded and having the first replacement data of the first type ECC block recorded thereon; and

a second spare area formed in a another one of the recording layers onto which the second type ECC block is recorded and having the second replacement data of the second type ECC block recorded thereon.

6. A method of recording data onto an information storage medium including two or more recording layers to reproduce or record the data by using a same reproducing and/or recording optical system per layer, the method comprising:

recording ECC blocks onto the two or more recording layers by using two or more data formats used to store user data.

7. The method of claim 6, wherein the recording of the ECC blocks further comprises:

recording one of the ECC blocks onto one of the recording layers having a cover layer with a first thickness by using one of the data formats which has a first error correction performance, and recording another one of the ECC blocks onto another one of the recording layers having another cover layer with a second thickness which is thinner than the first thickness by using another one of the data formats having a second error correction performance which is relatively high compared to the first error correction performance.

8. The method of claim 6, wherein each recording layer comprises a disc management information area, and the recording of the ECC blocks further comprises:

recording the ECC blocks onto the disc management information area of each recording layer by using the same data format.

9. The method of claim 6, wherein the recording of the ECC blocks further comprises:

storing first replacement data for replacing first user data of a first type ECC block having a first data format by performing a defect management operation or a logical overwrite (LOW) operation onto the first type ECC block having the first data format; and

storing second replacement data for replacing second user data of a second type ECC block having a second data format by performing the defect management operation or the LOW operation onto the second type ECC block having the second data format.

10. The method of claim 9, wherein the recording of the ECC blocks further comprises:

recording the first replacement data onto a first spare area of the information storage medium and recording the second replacement data onto a second spare area of the information storage medium that is separate from the first spare area.

11. An apparatus to record data onto an information storage medium including two or more recording layers to reproduce or record the data by using a same reproducing and/or recording optical system per layer, the apparatus comprising:

a recording unit to record the data onto the information storage medium; and

a controller to control the recording unit to record ECC blocks onto the two or more recording layers by using two or more data formats used to store user data.

12. The apparatus of claim 11, wherein the controller controls the recording unit to record one of the ECC blocks onto a recording layer having a cover layer with a first thickness by using one of the data formats having a first error correction performance, and to record another one of the ECC blocks onto another one of the recording layers having another cover layer with a second thickness which is thinner than the first thickness by using another one of the data formats having a second error correction performance which is relatively high compared to the first error correction performance.

13. The apparatus of claim 11, wherein each recording layer comprises a disc management information area, the controller controls the recording unit to record at least one of the ECC blocks onto the disc management information area of each respective recording layer by using the same data format.

14. The apparatus of claim 11, wherein the controller controls the recording unit to store first replacement data for replacing first user data of a first type ECC block having a first data format by performing a defect management operation or a logical overwrite (LOW) operation onto the first type ECC block having the first data format, and to store second replacement data for replacing second user data of a second type ECC block having a second data format by performing the defect management operation or the LOW operation onto the second type ECC block having the second data format.

15. The apparatus of claim 14, wherein the controller controls the recording unit to record the first replacement data onto a first spare area of the information storage medium and the second replacement data onto a second spare area of the information storage medium that is separate from the first spare area.

16. A method of reproducing data from an information storage medium including two or more recording layers to reproduce or record the data by using a same reproducing and/or recording optical system per layer, the method comprising:

reproducing ECC blocks from the two or more recording layers by using two or more data formats used to store user data.

17. The method of claim 16, wherein the reproducing of the ECC blocks further comprises:

reproducing one of the ECC blocks from a recording layer having a cover layer with a first thickness by using one of the data formats having a first error correction performance, and reproducing another one of the ECC blocks from another recording layer having another cover layer with a second thickness which is thinner than the first thickness by using another one of the data formats having a second error correction performance which is relatively high compared to the first error correction performance.

18. The method of claim 16, wherein each recording layer comprises a disc management information area, and the reproducing of the ECC blocks further comprises:

reproducing the ECC blocks from the disc management information area of each recording layer by using the same data format.

19. The method of claim 16, wherein the reproducing of the ECC blocks further comprises:

reading first replacement data for replacing first user data of a first type ECC block having a first data format by performing a defect management operation or a logical overwrite (LOW) operation from the first type ECC block having the first data format; and

reading second replacement data for replacing second user data of a second type ECC block having a second data format by performing the defect management operation or the LOW operation from the second type ECC block having the second data format.

20. The method of claim 19, wherein the reproducing of the ECC blocks further comprises:

reproducing the first replacement data from a first spare area of the information storage medium and reproducing the second replacement data from a second spare area of the information storage medium that is separate from the first spare area.

21. An apparatus to reproduce data from an information storage medium including two or more recording layers to reproduce or record the data by using a same reproducing and/or recording optical system per layer, the apparatus comprising:

a reproducing unit to reproduce the data from the information storage medium; and

a controller to control the reproducing unit to reproduce ECC blocks from the two or more recording layers by using two or more data formats used to store user data.

22. The apparatus of claim 21, wherein the controller controls the reproducing unit to reproduce one of the ECC blocks from a recording layer having a cover layer with a first thickness by using one of the data formats having a first error correction performance, and to reproduce another one of the ECC blocks from another recording layer having another cover layer with a second thickness which is less than the first thickness by using another one of the data formats having a second error correction performance which is relatively high compared to the first error error correction performance.

23. The apparatus of claim 21, wherein each recording layer comprises a disc management information area, and the controller controls the reproducing unit to reproduce at least one the ECC blocks respectively recorded in each of the disc management information areas of each recording layer by using the same data format.

24. The apparatus of claim 21, wherein the controller controls the reproducing unit to read first replacement data for replacing first user data of a first type ECC block having a first data format by performing a defect management operation or a logical overwrite (LOW) operation from the first type ECC block having the first data format, and to read second replacement data for replacing second user data of a second type ECC block having a second data format by performing the defect management operation or the LOW operation from the second type ECC block having the second data format.

25. The apparatus of claim 24, wherein the controller controls the reproducing unit to reproduce the first replacement data from a first spare area of the information storage medium and the second replacement data from a second spare area of the information storage medium that is separate from the first spare area.

26. A method of recording data onto an information storage medium, the method comprising:

recording error correction code (ECC) blocks on respective recording layers of the information storage medium, wherein a ratio of user data to additional information used to record and/or reproduce the user data and included within each ECC block varies according to thicknesses of cover layers respectively corresponding to each of the recording layers.

27. The method of claim 26, wherein an amount of the additional information increases relative to an amount of the user data as the thickness of the cover layer decreases.

28. The method of claim 26, wherein the additional information comprises parity information.

29. A method of reproducing data from an information storage medium, the method comprising:

reproducing error correction code (ECC) blocks from respective recording layers of the information storage medium, wherein a ratio of user data to additional information used to record and/or reproduce the user data and included within each ECC block varies according to thicknesses of cover layers respectively corresponding to each of the recording layers.

30. The method of claim 29, wherein an amount of the additional information increases relative to an amount of the user data as the thickness of the cover layer decreases.

31. The method of claim 30, wherein the additional information comprises parity information.