# US 7,313,066 B2 · Write once disc allowing management of data area, method of managing the data area, and method for reproducing data from write once disc

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- Number: US 7,313,066 B2
- Document ID: US7313066B2
- Status: Granted
- Kind: B2
- Application number: 10/797,050
- Filed: 2004-03-11
- Published: 2004-09-16
- Granted: 2007-12-25
- Earliest claimed: 2003-03-13
- Assignees: Samsung Electronics Co., Ltd.
- Inventors: Sung-hee Hwang; Jung-wan Ko; Kyung-geun Lee
- Web page: https://patentgrep.com/patent/US7313066B2

## CPC

- 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)}
- G11B 7/00745: {Sectoring or header formats within a track (formats in general G11B20/12)}
- G11B 20/1806: {Pulse code modulation systems for audio signals (G11B20/1803 takes precedence)}
- G11B 20/1883: {Methods for assignment of alternate areas for defective areas}
- G11B 23/28: Indicating {or preventing} prior or unauthorised use, {e.g. cassettes with sealing or locking means, write-protect devices for discs (write-protect devices for tapes G11B23/042, G11B23/08714; dummy cassettes for locking in the drive G11B33/005)}
- G11B 23/36: Signals on record carriers or on containers and recorded by the same method as the main recording
- G11B 27/329: {on a disc [VTOC]}
- G11B 20/1879: {Direct read-after-write methods}
- G11B 2020/1285: {Status of the record carrier, e.g. space bit maps, flags indicating a formatting status or a write permission}
- G11B 2020/1873: {Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL}
- 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]}
- G11B 2220/20: Disc-shaped record carriers
- G11B 2220/218: Write-once discs
- G11B 2220/235: Multilayer discs, i.e. multiple recording layers accessed from the same side
- 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 write once disc allowing management of a data area, a method of managing the data area of the write once disc, an apparatus recording data on the write once disc, an apparatus and method of reproducing data from a write once disc. The write once disc, includes a lead-in zone, a data area, and a lead-out zone. The write once disc includes a predetermined area storing area allocation information which indicates whether at least one section of the data area is allocated for disc defect management. In the disc and method, area allocation information specifying a structure of the data area is recorded on the disc, thus allowing a recording/reproducing apparatus to recognize the data area structure. Therefore, allocating areas, such as a spare area, for disc defect management other than an area for storing user data, to the data area is possible. The allocation of the areas for disc defect management to the data area enables effective use of the write once disc.

## Claims

### Claim 1

A write once disc including a lead-in zone, a data area, and a lead-out zone, the disc comprising:
a predetermined area storing area allocation information that indicates whether at least one section of the data area is allocated for disc defect management, wherein the predetermined area is formed in a temporary disc defect structure (TDDS) of a temporary defect management area (TDMA), and the area allocation information recorded in the temporary disc defect structure (TDDS) is recorded in a defect management area (DMA).

### Claim 2 (depends on 1)

The disc of claim 1, wherein the area allocation information comprises information specifying a size of the at least one section of the data area.

### Claim 3

A method of managing a data area of a write once disc, comprising:
receiving an instruction regarding whether allocation of at least one section of the data area of the disc for disc defect management is required; and
recording area allocation information, which indicates whether the at least one section of the data area is allocated for disc defect management, in a predetermined area of the disc, wherein the predetermined area is formed in a temporary disc defect structure (TDDS) of a temporary defect management area (TDMA).

### Claim 4 (depends on 3)

The method of claim 3, wherein the recording of the area allocation information comprises recording information specifying a size of the at least one section of the data area.

### Claim 5

A method of reproducing data from a write once disc, comprising:
accessing a predetermined area of the disc to read area allocation information that indicates whether at least one section of a data area is allocated for disc defect management; and
obtaining the area allocation information, wherein the predetermined area is formed in a temporary disc defect structure (TDDS) of a temporary defect management area (TDMA), and the area allocation information recorded in the temporary disc defect structure (TDDS) is recorded in a defect management area (DMA).

### Claim 6 (depends on 5)

The method of claim 5, wherein the area allocation information comprises information specifying a size of the at least one section.