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1. (WO2014203527) OPTICAL DISC INFORMATION DEVICE AND INFORMATION PROCESSING DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/203527 International Application No.: PCT/JP2014/003261
Publication Date: 24.12.2014 International Filing Date: 17.06.2014
IPC:
G11B 7/005 (2006.01) ,G11B 7/09 (2006.01) ,G11B 7/135 (2012.01)
[IPC code unknown for G11B 7/05]
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
08
Disposition or mounting of heads or light sources relatively to record carriers
09
with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
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
135
Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.[JP/JP]; 1-61, Shiromi 2-chome, Chuo-ku, Osaka-shi, Osaka 5406207, JP
Inventors: WAKABAYASHI, Kanji; null
SANO, Kousei; null
YAMASAKI, Fumitomo; null
KOMMA, Yoshiaki; null
TANAKA, Toshiyasu; null
Agent: KOTANI, Etsuji; JP
Priority Data:
2013-13087521.06.2013JP
2013-16676909.08.2013JP
Title (EN) OPTICAL DISC INFORMATION DEVICE AND INFORMATION PROCESSING DEVICE
(FR) DISPOSITIF SUPPORT D'INFORMATIONS À DISQUE OPTIQUE ET DISPOSITIF DE TRAITEMENT D'INFORMATIONS
(JA) 光ディスク情報装置及び情報処理装置
Abstract:
(EN) An optical disc information device reproduces and/or records information from or onto an optical disc which has a groove track and which is capable of recording information on the land portion and the groove portion in the groove, the optical disc information device comprising: a laser light source; an object lens; a transmittance limiting element; a splitting element; a light detector; a central amplifier; at least two end amplifiers; a gain controller; an adder; a playback signal processing unit; and a control signal processing unit. The transmittance limiting element includes a first central region and at least two first end regions sandwiching the first central region, and, with respect to the light flux emitted from a laser light source, attenuates at least the light passing through the first end regions more than the light passing through the first central region.
(FR) L'invention concerne un dispositif support d'informations à disque optique reproduisant et/ou enregistrant des informations à partir de ou sur un disque optique, qui possède une piste de sillon, et qui est capable d'enregistrer des informations sur la partie de plage et la partie de sillon dans le sillon. Le dispositif support d'informations à disque optique comporte : une source de lumière laser ; une lentille d'objectif ; un élément de limitation de transmittance ; un élément de séparation ; un détecteur de lumière ; un amplificateur central ; au moins deux amplificateurs finaux, une commande de gain ; un additionneur ; une unité de traitement de signal de lecture et une unité de traitement de signal de commande. L'élément de limitation de transmittance comporte une première région centrale et aux moins deux premières régions finales prenant en sandwich la première région centrale, et, en fonction du flux lumineux émis par une source de lumière laser, atténue la lumière passant à travers les premières régions finales de manière au moins plus forte que la lumière passant à travers la première région centrale.
(JA)  光ディスク情報装置は、溝状のトラックを有し、溝のランド部及びグルーブ部に情報を記録可能な光ディスクに対して情報を再生及び/又は記録する光ディスク情報装置であって、レーザー光源と、対物レンズと、透過率制限素子と、分割素子と、光検出器と、中央部増幅器と、少なくとも2つの端部増幅器と、利得制御器と、加算器と、再生信号処理部と、制御信号処理部とを備え、透過率制限素子は、第一の中央部領域と、第一の中央部領域を挟む少なくとも2つの第一の端部領域とを有し、レーザー光源から出射された光束のうち少なくとも第一の端部領域を透過する光を第一の中央部領域を透過する光よりも減衰する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)