DE69019248D1 - Optisches Aufnahme- und/oder Wiedergabegerät. - Google Patents

Optisches Aufnahme- und/oder Wiedergabegerät.

Info

Publication number
DE69019248D1
DE69019248D1 DE69019248T DE69019248T DE69019248D1 DE 69019248 D1 DE69019248 D1 DE 69019248D1 DE 69019248 T DE69019248 T DE 69019248T DE 69019248 T DE69019248 T DE 69019248T DE 69019248 D1 DE69019248 D1 DE 69019248D1
Authority
DE
Germany
Prior art keywords
optical recording
playback device
playback
recording
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 - Fee Related
Application number
DE69019248T
Other languages
English (en)
Other versions
DE69019248T2 (de
Inventor
Kiyoshi Ohsato
Atsushi Fukumoto
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Publication of DE69019248D1 publication Critical patent/DE69019248D1/de
Application granted granted Critical
Publication of DE69019248T2 publication Critical patent/DE69019248T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/094—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
    • G11B7/095—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
DE69019248T 1989-07-21 1990-07-10 Optisches Aufnahme- und/oder Wiedergabegerät. Expired - Fee Related DE69019248T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1189272A JPH0354733A (ja) 1989-07-21 1989-07-21 光学記録および／または再生装置

Publications (2)

Publication Number Publication Date
DE69019248D1 true DE69019248D1 (de) 1995-06-14
DE69019248T2 DE69019248T2 (de) 1995-09-14

Family

ID=16238542

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69019248T Expired - Fee Related DE69019248T2 (de) 1989-07-21 1990-07-10 Optisches Aufnahme- und/oder Wiedergabegerät.

Country Status (6)

Country Link
US (1) US5090004A (de)
EP (1) EP0409469B1 (de)
JP (1) JPH0354733A (de)
KR (1) KR910003615A (de)
DE (1) DE69019248T2 (de)
MY (1) MY105948A (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2556906B2 (ja) * 1989-09-08 1996-11-27 シャープ株式会社 光ピックアップ装置
JPH0775081B2 (ja) * 1990-06-27 1995-08-09 パイオニア株式会社 光ピックアップ
JPH04313818A (ja) * 1991-01-30 1992-11-05 Pioneer Electron Corp アクチュエータ位置検出装置、アクチュエータ位置制御装置及びトラックサーチ制御装置
JP2935908B2 (ja) * 1991-01-30 1999-08-16 パイオニア株式会社 光スポット位置検出装置
JPH04313819A (ja) * 1991-01-30 1992-11-05 Pioneer Electron Corp 光スポット位置検出装置
US5173598A (en) * 1991-05-10 1992-12-22 U.S. Philips Corporation Optical scanning beam position control system which is free of modulation by tracking error
DE69319673T2 (de) * 1992-08-12 1999-02-25 Philips Electronics Nv Einrichtung zur optischen Abtastung einer Oberfläche
JP3103220B2 (ja) * 1992-10-30 2000-10-30 パイオニア株式会社 光学式信号再生装置
KR970011227B1 (ko) * 1994-04-30 1997-07-08 대우전자 주식회사 멀티 레이저비임형 광픽업장치
JPH08263855A (ja) * 1995-03-23 1996-10-11 Nec Corp 光学ヘッド用移送制御装置
TW444201B (en) * 1998-02-16 2001-07-01 Hitachi Ltd Optical head
US6963522B2 (en) * 2001-05-31 2005-11-08 Nec Corporation Optical head apparatus and optical information recording and reproducing apparatus
US20020181353A1 (en) * 2001-05-31 2002-12-05 Nec Corporation Optical head apparatus and optical information recording and reproducing apparatus
US7626900B2 (en) 2003-09-24 2009-12-01 Sony Corporation Optical pickup and disk drive apparatus
KR20080021053A (ko) * 2005-05-31 2008-03-06 코닌클리케 필립스 일렉트로닉스 엔.브이. 가드 밴드들 사이에서 다수의 트랙을 포착하는 광학 데이터기록/재생 시스템
CN101189668A (zh) * 2005-05-31 2008-05-28 皇家飞利浦电子股份有限公司 光学***
WO2006131858A1 (en) * 2005-06-06 2006-12-14 Koninklijke Philips Electronics N.V. An optical system with 3 spot radial tracking

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504938A (en) * 1981-04-07 1985-03-12 Victor Company Of Japan, Limited Device for feedback controlling focus of an optical system in an information recording/reproducing apparatus
JPH0675297B2 (ja) * 1981-08-28 1994-09-21 株式会社日立製作所 光学的情報記録再生装置
JPS5958637A (ja) * 1982-09-28 1984-04-04 Sony Corp 光学式再生装置
JPH0687316B2 (ja) * 1983-02-10 1994-11-02 オリンパス光学工業株式会社 光学式再生装置
JPH0795371B2 (ja) * 1984-02-29 1995-10-11 日本電気ホームエレクトロニクス株式会社 光学ヘツド
JPS6194246A (ja) * 1984-10-15 1986-05-13 Sony Corp 光学式ヘッドのトラッキング誤差検出方法
US4787075A (en) * 1984-12-26 1988-11-22 Canon Kabushiki Kaisha Optical information recording medium and apparatus for recording/reproducing information using the same
US4750162A (en) * 1985-07-16 1988-06-07 Victor Company Of Japan, Ltd. Optical tracking system utilizing three photo-detectors
KR900008378B1 (ko) * 1986-03-19 1990-11-17 상요 덴기 가부시기가이샤 광학식 기록장치
JPS63104225A (ja) * 1986-10-21 1988-05-09 Csk Corp 光記録媒体のトラツキング方式
FR2613866B1 (fr) * 1987-04-07 1994-01-14 Mitsubishi Denki Kk Appareil d'enregistrement et de reproduction optique d'information
JPH0237940A (ja) * 1988-07-26 1990-02-07 Kawasaki Steel Corp 表面性状の優れた熱延鋼板用スラブの製造方法

Also Published As

Publication number Publication date
EP0409469B1 (de) 1995-05-10
US5090004A (en) 1992-02-18
EP0409469A3 (en) 1992-01-22
MY105948A (en) 1995-02-28
JPH0354733A (ja) 1991-03-08
KR910003615A (ko) 1991-02-28
DE69019248T2 (de) 1995-09-14
EP0409469A2 (de) 1991-01-23

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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