ZA92900B - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
ZA92900B
ZA92900B ZA92900A ZA92900A ZA92900B ZA 92900 B ZA92900 B ZA 92900B ZA 92900 A ZA92900 A ZA 92900A ZA 92900 A ZA92900 A ZA 92900A ZA 92900 B ZA92900 B ZA 92900B
Authority
ZA
South Africa
Prior art keywords
scanning device
optical scanning
optical
scanning
Prior art date
Application number
ZA92900A
Other languages
English (en)
Inventor
Gerhard Weissmann
Weissmann Gerhard
Christian Buchler
Buchler Christian
Original Assignee
Thomson Brandt Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of ZA92900B publication Critical patent/ZA92900B/xx

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers 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
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers 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 for track following only
    • G11B7/0903—Multi-beam tracking systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers 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
    • G11B7/094—Methods and circuits for servo offset compensation
ZA92900A 1991-02-08 1992-02-07 Optical scanning device ZA92900B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4103854A DE4103854A1 (de) 1991-02-08 1991-02-08 Optische abtastvorrichtung

Publications (1)

Publication Number Publication Date
ZA92900B true ZA92900B (en) 1993-01-27

Family

ID=6424662

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA92900A ZA92900B (en) 1991-02-08 1992-02-07 Optical scanning device

Country Status (11)

Country Link
US (1) US5570328A (xx)
EP (2) EP0498512A3 (xx)
JP (1) JPH06504869A (xx)
CN (1) CN1030358C (xx)
DE (2) DE4103854A1 (xx)
ES (1) ES2078032T3 (xx)
HK (1) HK69397A (xx)
MX (1) MX9200558A (xx)
MY (1) MY111874A (xx)
WO (1) WO1992014243A1 (xx)
ZA (1) ZA92900B (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743935A1 (de) 1997-10-04 1999-04-08 Thomson Brandt Gmbh Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger
CN102323590B (zh) * 2011-05-30 2012-12-26 北京理工大学 一种半主动激光目标方位精确识别装置
CN111650634B (zh) * 2020-05-22 2022-06-14 中国科学院上海应用物理研究所 一种基于纵向相位测量的束流位置探测器机械中心标定方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130240A (en) * 1981-02-05 1982-08-12 Olympus Optical Co Ltd Optical information recording and reproducing device and information recording medium for it
NL8105072A (nl) * 1981-11-10 1983-06-01 Philips Nv Electro-optische inrichting.
US4686662A (en) * 1984-07-16 1987-08-11 Storage Technology Partners Ii Subaperture coarse tracking optical system for optical data storage devices
US4782474A (en) * 1985-01-31 1988-11-01 Fujitsu Limited Tracking servo system for controllably projecting an optical beam on an optical disk
US5208792A (en) * 1987-05-29 1993-05-04 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus using opto-magneto media
JPH01173324A (ja) * 1987-12-28 1989-07-10 Toshiba Corp 情報処理装置
JPH01273228A (ja) * 1988-04-25 1989-11-01 Sharp Corp 光ピックアップ装置
KR930007174B1 (ko) * 1989-03-31 1993-07-31 가부시기가이샤 도시바 픽업 이송 장치
JP2747332B2 (ja) * 1989-07-05 1998-05-06 三菱電機株式会社 光ヘッド
US5412634A (en) * 1990-02-16 1995-05-02 Deutsche Thomson-Brandt Gmbh Optical scanning device for a disc player including improved focusing apparatus
KR920006926A (ko) * 1990-09-29 1992-04-28 정용문 광디스크 구동장치의 트랙편심 보정 방법 및 그 장치
JPH0690976B2 (ja) * 1990-10-05 1994-11-14 インターナショナル・ビジネス・マシーンズ・コーポレーション 光磁気記録媒体
US5452276A (en) * 1991-01-31 1995-09-19 Deutsche Thomson-Brandt/Gmbh Tracking regulation circuit including apparatus for disabling coarse drive signals

Also Published As

Publication number Publication date
DE59203394D1 (de) 1995-09-28
JPH06504869A (ja) 1994-06-02
EP0498512A2 (de) 1992-08-12
CN1030358C (zh) 1995-11-22
WO1992014243A1 (de) 1992-08-20
EP0570415B1 (de) 1995-08-23
MY111874A (en) 2001-02-28
MX9200558A (es) 1992-08-01
HK69397A (en) 1997-05-30
DE4103854A1 (de) 1992-08-27
EP0570415A1 (de) 1993-11-24
ES2078032T3 (es) 1995-12-01
US5570328A (en) 1996-10-29
EP0498512A3 (en) 1993-06-09
CN1066930A (zh) 1992-12-09

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