Method and apparatus for recording data on write-once recording medium

• US 20050207305A1
• Filed: 03/18/2005
• Published: 09/22/2005
• Est. Priority Date: 03/19/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung Wan
• Granted Patent: US 8,149,664 B2
• Time in Patent Office: Days
• US Class Current: 369/53.290
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• 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 2020/1893 using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
• CPC Class Codes: G11B 2020/1896 using skip or slip replacement to relocate data from a defective block to the next usable block, e.g. with a primary defect list [PDL]
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs

Abstract

A method and apparatus for recording data on a write-once recording medium are disclosed. In the write-once recording medium, the method includes, when a defect area is detected in the recording medium, deciding a replacement recording method for replacing the defect area, when the detected defect area is replacement recorded in a spare area, recording a position information of the defect area and a position information of the spare area in a temporary management area as a defect management information, and when the detected defect area is skipped and the data is replacement recorded in a next consecutive area, an information indicating that the skipped area is the defect area is recorded in a temporary management area as a defect management information. Thus, the write-once recording medium may be managed with more efficiency and data may be efficiently recorded on the recording medium.

Claims

1. In a write-once recording medium, a method for recording data in the write-once recording medium, the method comprising:

when a defect area is detected in the recording medium, deciding a replacement recording method for replacing the defect area;

when the detected defect area is replacement recorded in a spare area, recording a position information of the defect area and a position information of the spare area in a temporary management area as a defect management information; and

when the detected defect area is skipped and the data is replacement recorded in a next consecutive area, an information indicating that the skipped area is the defect area is recorded in a temporary management area as a defect management information.

2. The method of claim 1, wherein the data being recorded on the recording medium is data recorded in non real-time.

3. The method of claim 1, wherein the defect management information is recorded as a defect entry configuring a temporary defect list (TDFL) within the temporary management area.

4. The method of claim 3, wherein, when the defect area is replacement recorded in the spare area, the defect entry records each cluster as a re-allocatable defect (RAD) type.

5. The method of claim 3, wherein, when the defect area is replacement recorded in the spare area, the defect entry records a plurality of consecutive clusters as a consecutive re-allocatable defect (CRD) type.

6. The method of claim 3, wherein, when the defect area is replacement recorded to a next consecutive area by skipping the defect area, the defect entry records each cluster as a non-reallocatable defect (NRD) type.

7. The method of claim 3, wherein, when the defect area is replacement recorded to a next consecutive area by skipping the defect area, the defect entry records a plurality of consecutive clusters as a consecutive non-reallocatable defect (CND) type.

8. In a write-once recording medium, a method for recording data on the recording medium, the method comprising:

when a defect area is detected while recording data on the recording medium in real-time, either replacement recording data of the defect area on a next consecutive area by skipping the defect area or recording data by ignoring the corresponding defect area;

when data is replacement recorded on a next consecutive area by skipping the defect area, recording an information indicating that the skipped area is the defect area in a temporary management area as a defect management information; and

when data is recorded by ignoring the corresponding defect area, recording an information indicating that the ignored area is the defect area in a temporary management area as a defect management information.

9. The method of claim 8, wherein the defect management information is recorded as a defect entry configuring a temporary defect list (TDFL) within the temporary management area.

10. The method of claim 9, wherein the defect entry managing the defect area records each cluster as a non-reallocatable defect (NRD) type.

11. The method of claim 9, wherein the defect entry managing the defect area records a plurality of consecutive clusters as a consecutive non-reallocatable defect (CND) type.

12. In a method for recording data on a write-once recording medium, a data recording method of the write-once recording medium, the method comprising:

when a defect area is detected while recording data on the recording medium, and when data is recorded in non real-time, performing recording by using one of a linear replacement method in a spare area and a skip replacement method skipping the defect area;

when data is recorded in real-time, performing recording by using one of a stream recording method and a skip replacement method skipping the defect area; and

recording a defect management information according to each recording method in a temporary management area within the recording medium.

13. The method of claim 12, wherein the defect management information being recorded in the temporary management area, when replacement recording is performed in the spare area, includes a re-allocatable defect (RAD) type performing replacement recording for the defect area occurring in one cluster, and a consecutive re-allocatable defect (CRD) type performing replacement recording for the defect area occurring in a plurality of consecutive clusters.

14. The method of claim 12, wherein the stream recording method in the real-time recording method ignores the defect area and consecutively records the data without replacement recording.

15. The method of claim 12, wherein the skip replacement method skips the cluster having the defect area occurred therein and continuously records data on a next consecutive cluster.

16. The method of claim 12, wherein, in the skip replacement method in the non real-time recording method, a next record starting position is decided from a host and performs recording starting from the decided position.

17. The method of claim 16, wherein the defect management information corresponding to the defect area is recorded as a non-reallocatable defect (NRD) type when the defect area is a single cluster, and as a consecutive non-reallocatable defect (CND) type when the defect area is a plurality of consecutive clusters, in the temporary management area of the recording medium as a temporary defect list (TDFL) information.

18. The method of claim 16, wherein, in the skip replacement method in the real-time recording method, a drive decides by itself a next record starting position, without host designation, and performs recording starting from the decided position.

19. The method of claim 18, wherein the defect management information corresponding to the defect area is recorded as a non-reallocatable defect (NRD) type when the defect area is a single cluster, and as a consecutive non-reallocatable defect (CND) type when the defect area is a plurality of consecutive clusters, in the temporary management area of the recording medium as a temporary defect list (TDFL) information.

20. In a method for recording data on a write-once recording medium, a data recording method of the write-once recording medium, the method comprising:

recording data on a first open sequential recording range (SRR), and, when a defect area is detected while recording data, skipping the defect area so as to perform recording by using a skip replacement method in a next consecutive area; and

when the next consecutive area is a second open sequential recording range (SRR), changing the first open SRR to a closed SRR.

21. An apparatus for recording data on a write-once recording medium, the apparatus comprising:

a memory reading and storing a management information on the write-once recording medium; and

a microcomputer controlling operations so that data is recorded in a non recording-completed area and a non-defect area through the management information stored in the memory, and so that when a defect area is detected while recording data on the recording medium, and when data is recorded in non real-time, recording is performed by using one of a linear replacement method in a spare area and a skip replacement method skipping the defect area, and when data is recorded in real-time, recording is performed by using one of a stream recording method and a skip replacement method skipping the defect area.