DE3684663D1 - Optisches informationsaufnahme- und -wiedergabegeraet. - Google Patents

Optisches informationsaufnahme- und -wiedergabegeraet.

Info

Publication number
DE3684663D1
DE3684663D1 DE8686308509T DE3684663T DE3684663D1 DE 3684663 D1 DE3684663 D1 DE 3684663D1 DE 8686308509 T DE8686308509 T DE 8686308509T DE 3684663 T DE3684663 T DE 3684663T DE 3684663 D1 DE3684663 D1 DE 3684663D1
Authority
DE
Germany
Prior art keywords
information recording
playback device
optical information
playback
optical
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE8686308509T
Other languages
English (en)
Inventor
Masaru Nomura
Toshihisa Daiya-Height Deguchi
Shigeo Terashima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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
Priority claimed from JP24509685A external-priority patent/JPS62103854A/ja
Priority claimed from JP60246497A external-priority patent/JPH0746434B2/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE3684663D1 publication Critical patent/DE3684663D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
    • 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
    • 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
    • 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
    • G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
DE8686308509T 1985-10-30 1986-10-30 Optisches informationsaufnahme- und -wiedergabegeraet. Expired - Lifetime DE3684663D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24509685A JPS62103854A (ja) 1985-10-30 1985-10-30 光情報記録再生装置
JP60246497A JPH0746434B2 (ja) 1985-10-31 1985-10-31 光情報記録再生装置

Publications (1)

Publication Number Publication Date
DE3684663D1 true DE3684663D1 (de) 1992-05-07

Family

ID=26537042

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686308509T Expired - Lifetime DE3684663D1 (de) 1985-10-30 1986-10-30 Optisches informationsaufnahme- und -wiedergabegeraet.

Country Status (4)

Country Link
US (1) US4849953A (de)
EP (1) EP0221782B1 (de)
CA (1) CA1270559A (de)
DE (1) DE3684663D1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6378386A (ja) * 1986-09-19 1988-04-08 Pioneer Electronic Corp 微調サ−ボ装置におけるオフセツト補償回路
US5214635A (en) * 1987-02-27 1993-05-25 Matsushita Electric Industrial Co., Ltd. Erasable optical disk and optical information recording/reproduction apparatus
US4939713A (en) * 1987-02-27 1990-07-03 Matsushita Electric Industrial Co., Ltd. Erasable optical disk and optical information recording/reproduction apparatus
US5396477A (en) * 1988-09-21 1995-03-07 Hitachi, Ltd. Light spot positioning method and optical disc memory apparatus employing the same
JPH069087B2 (ja) * 1988-10-06 1994-02-02 キヤノン株式会社 光学的情報記録再生装置
JPH02161620A (ja) * 1988-12-14 1990-06-21 Asahi Optical Co Ltd 自動利得制御装置
US5268894A (en) * 1990-04-13 1993-12-07 Pioneer Electronic Corporation Apparatus for reproducing information by delaying and attenuating a reproducing signal
JPH0423234A (ja) * 1990-05-18 1992-01-27 Sony Corp 光学装置のトラッキング誤差信号生成装置
USRE36864E (en) * 1990-09-27 2000-09-12 International Business Machines Corporation Optical disk drive and methods for counting the number of tracks on an optical disk
US5199017A (en) * 1991-09-11 1993-03-30 International Business Machines Corporation Optical disk drive and method for counting the number of tracks on an optical disk
JP2682748B2 (ja) * 1991-03-05 1997-11-26 富士通株式会社 光記録媒体のトラック横断信号作成回路
US5197058A (en) * 1991-03-05 1993-03-23 Hewlett-Packard Company Electronic offset compensation of the continuous composite track error signal in optical recording
JP3176145B2 (ja) * 1992-09-08 2001-06-11 パイオニア株式会社 光学式情報記録再生装置
US5566152A (en) * 1992-10-21 1996-10-15 Matsushita Electric Industrial Co., Ltd. Tracking control system with correction capabilities for correcting disagreement between optical axes
JPH06282849A (ja) * 1993-01-29 1994-10-07 Sony Corp 光記録媒体、光記録媒体の記録再生装置及び再生装置
US5491681A (en) * 1993-12-13 1996-02-13 I M P, Inc. Peak detector for amplitude modulated signals
CN1098519C (zh) * 1994-05-17 2003-01-08 索尼公司 跟踪伺服装置及轨迹计数装置
KR0138337B1 (ko) * 1994-07-28 1998-05-15 김광호 포커스 제어방법 및 장치
JP3550836B2 (ja) * 1995-10-19 2004-08-04 ソニー株式会社 光学装置におけるトラッキングサーボ装置及びトラッキングサーボ方法
JP2008507071A (ja) * 2004-07-14 2008-03-06 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 改善されたトラッキングエラー信号の較正方法、及びかかる方法を実現するディスクドライブ

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814332A (ja) * 1981-07-16 1983-01-27 Mitsubishi Electric Corp 光学式情報再生装置
US4564929A (en) * 1981-11-25 1986-01-14 Hitachi, Ltd. Information recording and reproducing apparatus with tracking control by sampling
JPS58118039A (ja) * 1982-01-06 1983-07-13 Hitachi Ltd 光デイスクトラツク追跡装置
JPS58125242A (ja) * 1982-01-22 1983-07-26 Victor Co Of Japan Ltd 光学的情報信号再生装置のトラツキング誤差検出方式
JPS5919250A (ja) * 1982-07-21 1984-01-31 Hitachi Ltd 情報の記録再生装置
FR2536196B1 (fr) * 1982-11-11 1993-05-07 Sony Corp Circuit de servocommande d'alignement destine a un appareil de reproduction optique
JPS59191144A (ja) * 1983-04-14 1984-10-30 Sony Corp 光ピツクアツプのトラツキングサ−ボ回路
JPS6052935A (ja) * 1983-09-02 1985-03-26 Toshiba Corp トラツキングエラ−信号生成回路
JPS6061925A (ja) * 1983-09-14 1985-04-09 Ricoh Co Ltd 光情報記録再生装置
CA1255385A (en) * 1985-01-31 1989-06-06 Shigeru Arai Track servo system for controllably projecting an optical beam to an optical disk
JPH0652935A (ja) * 1992-06-05 1994-02-25 Sony Corp 装着状態監視機能付き接続装置およびこれを使用した電子機器
JP2910429B2 (ja) * 1992-08-05 1999-06-23 日本電気株式会社 移動無線電話機の位置情報管理装置および方法

Also Published As

Publication number Publication date
CA1270559A (en) 1990-06-19
EP0221782B1 (de) 1992-04-01
EP0221782A2 (de) 1987-05-13
EP0221782A3 (en) 1988-09-14
US4849953A (en) 1989-07-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee