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1. (WO2007010905) RECORDING/REPRODUCING DEVICE, RECORDING CONDITION ADJUSTING DEVICE AND RECORDING/REPRODUCING METHOD
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/010905 International Application No.: PCT/JP2006/314188
Publication Date: 25.01.2007 International Filing Date: 18.07.2006
IPC:
G11B 20/18 (2006.01) ,G11B 20/10 (2006.01) ,G11B 7/0045 (2006.01) ,G11B 7/007 (2006.01) ,G11B 7/125 (2012.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20
Signal processing not specific to the method of recording or reproducing; Circuits therefor
10
Digital recording or reproducing
18
Error detection or correction; Testing
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20
Signal processing not specific to the method of recording or reproducing; Circuits therefor
10
Digital recording or reproducing
[IPC code unknown for G11B 7/045][IPC code unknown for G11B 7/07]
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording 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
12
Heads, e.g. forming of the optical beam spot or modulation of the optical beam
125
Optical 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
Applicants:
松下電器産業株式会社 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 〒5718501 大阪府門真市大字門真1006番地 Osaka 1006, Oaza Kadoma, Kadoma-shi, Osaka 5718501, JP (AllExceptUS)
東海林 衛 SHOJI, Mamoru; null (UsOnly)
日野 泰守 HINO, Yasumori; null (UsOnly)
宮下 晴旬 MIYASHITA, Harumitsu; null (UsOnly)
小林 勲 KOBAYASHI, Isao; null (UsOnly)
Inventors:
東海林 衛 SHOJI, Mamoru; null
日野 泰守 HINO, Yasumori; null
宮下 晴旬 MIYASHITA, Harumitsu; null
小林 勲 KOBAYASHI, Isao; null
Agent:
奥田 誠司 OKUDA, Seiji; 〒5410041 大阪府大阪市中央区北浜一丁目8番16号 大阪証券取引所ビル10階 奥田国際特許事務所 Osaka OKUDA & ASSOCIATES, 10th Floor, Osaka Securities Exchange Bldg., 8-16, Kitahama 1-chome, Chuo-ku, Osaka-shi, Osaka 5410041, JP
Priority Data:
2005-20776915.07.2005JP
Title (EN) RECORDING/REPRODUCING DEVICE, RECORDING CONDITION ADJUSTING DEVICE AND RECORDING/REPRODUCING METHOD
(FR) DISPOSITIF D’ENREGISTREMENT/DE REPRODUCTION, DISPOSITIF D'ADAPTATION DES CONDITIONS DE REPRODUCTION ET PROCÉDÉ D'ENREGISTREMENT/DE REPRODUCTION
(JA) 記録再生装置、記録条件調整装置および記録再生方法
Abstract:
(EN) An operation of a reliability value of ‖Pa-Pb‖-Pstd of maximum-likelihood decoding results of a portion, which is equivalent to a start/end edge of a recording mark edge and has a high error generating probability in the maximum-likelihood decoding method, is performed for each combination of a prescribed mark length and a length of a space just before the mark, and for each combination of the mark length and a space just after the mark. Based on the operation results, a recording parameter is optimized, and recording is performed by having the optimized recording parameter reflected.
(FR) La présente invention se rapporte à une opération de calcul d'une valeur de fiabilité de ‖Pa-Pb‖-Pstd concernant les résultats de décodage de probabilité maximale d'une partie qui équivaut à un bord de début/fin d'un bord de marque d'enregistrement et qui présente une forte probabilité de génération d'erreur dans le procédé de décodage de probabilité maximale. Cette opération est exécutée pour chaque combinaison d'une longueur de marque déterminée et d'une longueur d'espace précédant immédiatement la marque, ainsi que pour chaque combinaison de la longueur de marque et d'un espace consécutif à la marque. Selon les résultats de l'opération, un paramètre d'enregistrement est optimisé et l'enregistrement est réalisé en tenant compte du paramètre d'enregistrement optimisé.
(JA)  記録マークのエッジの始終端部分に相当し、尚且つ最尤復号法においてエラーの発生確率が高い部分の、最尤復号結果の信頼性値|Pa-Pb|-Pstdの演算を、所定のマーク長と直前のスペース長の組み合わせと、マーク長と直後のスペース長の組み合わせごとに行い、その演算結果から記録パラメータを最適化し、最適化した記録パラメータを反映した記録を行う。
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP1909280JPWO2007010905US20090034381CN101223601CN101807419JP5054521