# US 7,161,879 B2 · Method of and drive for recording medium defect management, and defect managed recording medium

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,161,879 B2
- Document ID: US7161879B2
- Status: Granted
- Kind: B2
- Application number: 11/432,470
- Filed: 2006-05-12
- Published: 2006-09-14
- Granted: 2007-01-09
- Earliest claimed: 2003-04-26
- Assignees: Samsung Electronics Co., Ltd.
- Inventors: Sung-hee Hwang; Jung-wan Ko
- Web page: https://patentgrep.com/patent/US7161879B2

## CPC

- G11B 20/1251: {for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data}
- G11B 20/1883: {Methods for assignment of alternate areas for defective areas}
- G11B 27/36: Monitoring, i.e. supervising the progress of recording or reproducing {(for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06)}
- G11B 2020/1285: {Status of the record carrier, e.g. space bit maps, flags indicating a formatting status or a write permission}
- G11B 2020/1823: {wherein a flag is set when errors are detected or qualified}
- G11B 2020/1873: {Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL}
- G11B 2220/20: Disc-shaped record carriers
- G11B 2220/218: Write-once discs
- G11B 2220/2537: Optical discs
- G11B 2220/2562: DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A method of and drive for recording medium defect management, and a defect managed recording medium. The defect management method includes: writing first state information that specifies that an update cycle of a temporary defect management structure (TDMS) is open when updating of the TDMS begins, the TDMS containing information regarding temporary defect management; updating the TDMS when data is written to or read from the information storage medium; and writing second state information that specifies that the update cycle of the TDMS is closed, when the updating of the TDMS is completed.

## Claims

### Claim 1

A method for reproducing data recorded on an information storage medium comprising:
reading first state information from the information storage medium that specifies that an update cycle of a temporary defect management structure (TDMS) of the information storage medium is open, the TDMS containing information regarding temporary defect management; and
reading second state information from the information storage medium that specifies that the update cycle of the TDMS is closed, when updating of the TDMS is completed.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first state information is read in response to a command to open the TDMS updated cycle.

### Claim 3 (depends on 1)

The method of claim 1, wherein the first state information is read in response to a read command from the information storage medium.

### Claim 4 (depends on 1)

The method of claim 1, wherein the TDMS is updated to manage defect when data is read from the information storage medium.

### Claim 5 (depends on 1)

The method of claim 1, wherein the second state information is read in response to a command to eject the information storage medium.

### Claim 6 (depends on 1)

The method of claim 1, wherein the second state information is read in response to a command to close the TDMS update cycle.

### Claim 7 (depends on 1)

The method of claim 1, wherein one of the first and second state information is contained in the TDMS and read during the updating of the TDMS.

### Claim 8 (depends on 1)

The method of claim 1, wherein the TDMS contains temporary defect management information (TDDS) and a temporary defect list (TDFL), and one of the first and second state information is included in the TDDS.

### Claim 9 (depends on 1)

A computer readable medium encoded with processing instructions for implementing the method of claim 1 performed by a computer.

### Claim 10

A method for reproducing data recorded on an information storage medium, the method comprising:
reading first state information, which specifies that an update cycle of information for defect management is open, from an area of the information storage medium; and
reading second state information, which specifies that the update cycle of the information is closed, from the area when updating of the information is completed, wherein the information is updated to manage defect when data is read from the information storage medium.

### Claim 11 (depends on 10)

A computer readable medium encoded with processing instructions for implementing the method of claim 10 performed by a computer.

### Claim 12

A method for reproducing data recorded on an information storage medium by determining whether defect management of an information storage medium was abnormally terminated due to an abnormal event, the method comprising:
reading state information that specifies whether an update cycle of a temporary defect management structure (TDMS) of the information storage medium is open or closed, the TDMS containing information regarding temporary defect management; and
determining that the TDMS is up-to-date where the update cycle of the TDMS is closed and that the TDMS is not up-to-date where the update cycle of the TDMS is open.

### Claim 13 (depends on 12)

The method of claim 12, wherein the information storage medium is a write once information storage medium or a rewritable information storage medium.

### Claim 14 (depends on 12)

The method of claim 12, wherein the reading of the state information comprises reading lastly recorded state information of the TDMS.

### Claim 15 (depends on 12)

The method of claim 12, wherein the TDMS is updated to manage defect when data is read from the information storage medium.

### Claim 16 (depends on 12)

A computer readable medium encoded with processing instructions for implementing the method of claim 12 performed by a computer.