# US 8,787,133 B2 · Recording apparatus, recording method, and sparing destination selecting method

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- Number: US 8,787,133 B2
- Document ID: US8787133B2
- Status: Granted
- Kind: B2
- Application number: 13/917,698
- Filed: 2013-06-14
- Published: 2013-12-26
- Granted: 2014-07-22
- Earliest claimed: 2012-06-22
- Assignees: Sony Corporation
- Applicants: Sony Corporation
- Inventors: Tomotaka Kuraoka
- Web page: https://patentgrep.com/patent/US8787133B2

## CPC

- G11B 7/007: Arrangement of the information on the record carrier, e.g. form of tracks {, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track}
- G11B 20/1883: {Methods for assignment of alternate areas for defective areas}
- G11B 20/1889: {with discs}
- 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 7/2405: being also used as track layers of pre-formatted layers (tracks or pits G11B7/2407)
- G11B 2007/0013: {for carriers having multiple discrete layers}
- 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]}
- 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 recording apparatus includes: a recording unit to record information by laser irradiation on a recording medium having multiple recording layers where information is recorded, with a track formed in the layers as a continuous recording area and data recorded within a track, and also multiple tracks set to one layer according to recording purpose; and a control unit to determine a sparing destination where information is recorded on a recording position specified according to a recording request, and if sparing processing occurs, as a first priority the next recording address of a track being recorded is selected as a sparing destination, and as a second priority the next recording address of a track overlapped with a track where recording is performed according to the recording request in a layering direction of the layers is selected as a sparing destination, and to cause the recording unit to execute sparing recording.

## Claims

### Claim 1

A recording apparatus comprising:
a recording unit configured to perform recording of information by laser irradiation on a recording medium having a plurality of layers serving as recording layers where recording of information is performed by laser irradiation, and a track serving as a continuous recording area is formed in the plurality of layers and recording of data is performed within a track, and also a plurality of tracks are set to one layer according to recording purpose; and
a control unit configured to determine a sparing destination by sparing destination selecting processing where recording of information by the recording unit is executed on a recording position on the recording medium specified according to a recording request, and also in the event that sparing processing occurs, as a first priority the next recording address of a track being recorded is selected as a sparing destination, and as a second priority the next recording address of a track overlapped with a track where recording is performed according to the recording request in a layering direction of the layers is selected as a sparing destination, and to cause the recording unit to execute sparing recording.

### Claim 2 (depends on 1)

The recording apparatus according to claim 1, wherein the control unit searches, of tracks overlapped with a track where recording is performed according to the recording request, in a layering direction of the layers, from the rear-most layer as viewed from a laser beam entry face side, and selects as the second priority the next recording address of a track in an opened state first found, as a sparing destination.

### Claim 3 (depends on 1)

The recording apparatus according to claim 1, wherein of a plurality of tracks according to recording purpose set in each layer, tracks of the same recording purpose are set so as to be overlapped in a layer layering direction;
and wherein a track including a sparing destination selected as the second priority is a track of the same recording purpose as with a track including a sparing source.

### Claim 4 (depends on 3)

The recording apparatus according to claim 3, wherein, with the layers of the recording medium, there are set at least a management information track of which the recording purpose is to record management information, a user data track of which the recording purpose is to record user data, and a mirror track of which the recording purpose is to record mirror data of the management information.

### Claim 5 (depends on 1)

The recording apparatus according to claim 1, wherein as a third priority in the sparing destination selecting processing the control unit selects the next recording address of a track in an opened state first found by searching from the head of volume space as a sparing destination.

### Claim 6

A recording method comprising:
executing recording of information by laser irradiation on a recording position specified according to a recording request on a recording medium having a plurality of layers serving as recording layers where recording of information is performed by laser irradiation, and a track serving as a continuous recording area is formed, and recording of data is performed within a track, and also a plurality of tracks are set to one layer according to recording purpose; and
determining, in the event that sparing processing occurs, a sparing destination by sparing destination selecting processing where as a first priority the next recording address of a track being recorded is selected as a sparing destination, and as a second priority the next recording address of a track overlapped with a track where recording is performed according to the recording request in a layering direction of the layers is selected as a sparing destination, and sparing recording is executed.

### Claim 7

A sparing destination selecting method in a case where sparing processing of a recording position occurs on a recording medium having a plurality of layers serving as recording layers where recording of information is performed by laser irradiation, and a track serving as a continuous recording area is formed in the plurality of layers, and recording of data is performed within a track, and also a plurality of tracks are set to one layer according to recording purpose, the method comprising:
selecting, as a first priority, the next recording address of a track being recorded as a sparing destination; and
selecting, as a second priority, the next recording address of a track overlapped with a track where recording is performed according to the recording request in a layering direction of the layers as a sparing destination.