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1. (WO2007004360) OPTICAL PICKUP DEVICE AND INFORMATION RECORDING/REPRODUCING DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/004360 International Application No.: PCT/JP2006/309861
Publication Date: 11.01.2007 International Filing Date: 17.05.2006
Chapter 2 Demand Filed: 25.04.2007
IPC:
G11B 7/095 (2006.01) ,G11B 7/08 (2006.01) ,G11B 7/135 (2006.01)
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
095
specially adapted for discs, e.g. for compensation of eccentricity or wobble
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
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:
パイオニア株式会社 PIONEER CORPORATION [JP/JP]; 〒1538654 東京都目黒区目黒一丁目4番1号 Tokyo 4-1, Meguro 1-chome, Meguro-ku, Tokyo 1538654, JP (AllExceptUS)
柳澤琢麿 YANAGISAWA, Takuma [JP/JP]; JP (UsOnly)
棚橋祥夫 TANAHASHI, Yasuo [JP/JP]; JP (UsOnly)
Inventors:
柳澤琢麿 YANAGISAWA, Takuma; JP
棚橋祥夫 TANAHASHI, Yasuo; JP
Agent:
石川泰男 ISHIKAWA, Yasuo; 〒1050014 東京都港区芝二丁目17番11号 パーク芝ビル2階 Tokyo Park Shiba Building 2F 17-11, Shiba 2-chome Minato-ku, Tokyo 105-0014, JP
Priority Data:
2005-19365501.07.2005JP
Title (EN) OPTICAL PICKUP DEVICE AND INFORMATION RECORDING/REPRODUCING DEVICE
(FR) DISPOSITIF CAPTEUR OPTIQUE ET DISPOSITIF D’ENREGISTREMENT/REPRODUCTION D’INFORMATIONS
(JA) 光ピックアップ装置及び情報記録再生装置
Abstract:
(EN) In the case of performing tracking correction and CTC by using three beams, an irradiation position of the sub-beam is surely and correctly adjusted. The irradiation position of the sub-beam on a disk plane of an optical disc (DK) is adjusted by changing the angle of a diffraction grating (211) arranged in an optical pickup device (PU). In the adjustment, the angle of the diffraction grating (211) is adjusted by three steps of (i) rough adjustment, (ii) initial fine adjustment, and (iii) continued fine adjustment.
(FR) Réglage sûr et correct de la position de rayonnement du sous-faisceau lors de la correction de tracking et CTC au moyen de trois faisceaux. La position de rayonnement du sous-faisceau sur un plan de disque d’un disque optique (DK) est réglée en changeant l’angle d’un réseau de diffraction (211) disposé dans un dispositif capteur optique (PU). Au cours de l’ajustement, l’angle du réseau de diffraction (211) est réglé en trois étapes : (i) réglage grossier, (ii) réglage fin initial et (iii) réglage fin de suite.
(JA)  3ビームを用いてトラッキング補正やCTCを行う場合にサブビームの照射位置を確実且つ適切に調整可能とする。  光ピックアップ装置PUに設けられた回折格子211の角度を変化させることにより、光ディスクDKの盤面におけるサブビームの照射位置を調整する。かかる調整に際して、(i)粗調整、(ii)初期微調整、(iii)継続微調整の3段階にて回折格子211の角度を調整する。
front page image
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, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, 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, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, 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:
JPWO2007004360US20090092029JP4579982