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1. JP2007519140 - 符号付き偏差による訂正の方法、装置及び記録担体

Office
Japan
Application Number 2006520096
Application Date 15.07.2004
Publication Number 2007519140
Publication Date 12.07.2007
Publication Kind A
IPC
G11B 7/0045
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
G11B 7/125
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
G11B 20/18
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
18Error detection or correction; Testing
CPC
G11B 7/00458
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
00458Verification, i.e. checking data during or after recording
G11B 7/1263
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
126Circuits, methods or arrangements for laser control or stabilisation
1263Power control during transducing, e.g. by monitoring
G11B 7/1267
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
126Circuits, methods or arrangements for laser control or stabilisation
1267Power calibration
G11B 11/10502
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
10using recording by magnetic means ; or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
105using a beam of light or a magnetic field for recording ; by change of magnetisation; and a beam of light for reproducing, ; i.e. magneto-optical,; e.g. light-induced thermo-magnetic recording, ; spin magnetisation recording,; Kerr ; or Faraday; effect reproducing
10502characterised by the transducing operation to be executed
G11B 11/10595
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
10using recording by magnetic means ; or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
105using a beam of light or a magnetic field for recording ; by change of magnetisation; and a beam of light for reproducing, ; i.e. magneto-optical,; e.g. light-induced thermo-magnetic recording, ; spin magnetisation recording,; Kerr ; or Faraday; effect reproducing
10595Control of operating function
G11B 20/10212
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
10009Improvement or modification of read or write signals
10046filtering or equalising, e.g. setting the tap weights of an FIR filter
10212compensation for data shift (e.g. pulse crowding effects)
Applicants コーニンクレッカ フィリップス エヌ ヴェ
Inventors ヘラルド イー エヌ シュラールズ
ヘラルドゥス アール ランヘリーズ
Agents 伊東 忠彦
箱守 英史
Priority Data 03102199.1 17.07.2003 EP
Title
(JA) 符号付き偏差による訂正の方法、装置及び記録担体
Abstract
(JA)

記録担体上のトラックに情報を記録するための記録装置は、公称ランレングスを有するマーク及びスペースの書き込み及び読み取り処理を行う。この装置は検出ユニット(32)を有し、この検出ユニットは、マークの開始エッジ及び終端エッジの公称位置に対するこれら開始エッジ及び終端エッジの双方又はいずれか一方の位置偏差を表す符号付き偏差値信号(34)を発生する。計算ユニット(31)は、予め定められたランレングスのパターンの少なくとも1つを選択し、この選択されたランレングスのパターンに対する符号付き偏差値信号の少なくとも1つの統計的に計算されたパラメータに基づき、訂正信号(33)を決定する。放射源制御ユニット(29)は、この訂正信号に従い書き込み処理中に放射源の出力を制御する。