CA2024360A1 - Appareil a disque optique - Google Patents

Appareil a disque optique

Info

Publication number
CA2024360A1
CA2024360A1 CA2024360A CA2024360A CA2024360A1 CA 2024360 A1 CA2024360 A1 CA 2024360A1 CA 2024360 A CA2024360 A CA 2024360A CA 2024360 A CA2024360 A CA 2024360A CA 2024360 A1 CA2024360 A1 CA 2024360A1
Authority
CA
Canada
Prior art keywords
optical head
track
reference optical
light beam
proper
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.)
Granted
Application number
CA2024360A
Other languages
English (en)
Other versions
CA2024360C (fr
Inventor
Shigenori Yanagi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of CA2024360A1 publication Critical patent/CA2024360A1/fr
Application granted granted Critical
Publication of CA2024360C publication Critical patent/CA2024360C/fr
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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
CA002024360A 1989-08-31 1990-08-30 Appareil a disque optique Expired - Fee Related CA2024360C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1222936A JPH0766547B2 (ja) 1989-08-31 1989-08-31 光デイスク装置
JP1-222936 1989-08-31

Publications (2)

Publication Number Publication Date
CA2024360A1 true CA2024360A1 (fr) 1991-03-01
CA2024360C CA2024360C (fr) 1995-11-21

Family

ID=16790191

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002024360A Expired - Fee Related CA2024360C (fr) 1989-08-31 1990-08-30 Appareil a disque optique

Country Status (5)

Country Link
US (1) US5086419A (fr)
EP (1) EP0415782B1 (fr)
JP (1) JPH0766547B2 (fr)
CA (1) CA2024360C (fr)
DE (1) DE69018904T2 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5444684A (en) * 1990-10-03 1995-08-22 Fujitsu Limited Seek control system of dual processor magneto-optic disk unit
JP2930750B2 (ja) * 1991-03-06 1999-08-03 パイオニア株式会社 光学式記録装置
JP3126182B2 (ja) * 1991-11-01 2001-01-22 富士通株式会社 Ｃｄ−ｒｏｍ読取り装置
JPH05128545A (ja) * 1991-11-08 1993-05-25 Pioneer Electron Corp ２ヘツドデイスクプレーヤにおける情報読取再生方法
DE4211285C2 (de) * 1992-04-03 2001-05-10 Thomson Brandt Gmbh Verfahren und Anordnung zum Korrigieren der Winkellage eines Abtasters zum Informationsträger, insbesondere beim Anspringen von Abtastorten
KR100230892B1 (ko) * 1992-10-20 1999-11-15 모리시타 요이찌 디스크장치
JP3106750B2 (ja) * 1992-12-11 2000-11-06 松下電器産業株式会社 ディスク再生装置
JP2629637B2 (ja) * 1995-02-28 1997-07-09 日本電気株式会社 トラックアクセス制御方法及びこれを利用した光ディスク装置
KR100373673B1 (ko) * 1995-05-08 2003-05-09 산요 덴키 가부시키가이샤 광학기록·재생장치및광픽업
US5978329A (en) 1995-06-07 1999-11-02 Discovision Associates Technique for closed loop servo operation in optical disc tracking control
ES2112224T1 (es) 1995-12-06 1998-04-01 Discovision Ass Aparato y metodo para control de foco.
US5689485A (en) 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
US6172958B1 (en) * 1996-05-09 2001-01-09 Sony Corporation Optical pick-up and disk player
WO1997042632A1 (fr) * 1996-05-09 1997-11-13 Sony Corporation Tete de lecture optique et lecteur de disque
JP3042484B2 (ja) 1998-01-12 2000-05-15 日本電気株式会社 光ディスク装置の制御方法及び光ディスク装置
EP2141701B1 (fr) 2008-06-26 2011-03-09 Harman Becker Automotive Systems GmbH Dispositif de capture optique avec deux actionneurs
WO2013105151A1 (fr) * 2012-01-11 2013-07-18 パナソニック株式会社 Dispositif optique d'enregistrement/lecture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074085A (en) * 1976-03-31 1978-02-14 Eli S. Jacobs Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks
US4841502A (en) * 1985-06-14 1989-06-20 Kabushiki Kaisha Toshiba Information recording system and reproducing for recording and reproducing information on a magneto-optical disk
JPS6278744A (ja) * 1985-10-01 1987-04-11 Shibasoku:Kk 光デイスク装置
US4873679A (en) * 1986-12-25 1989-10-10 Matsushita Electric Industrial Co., Ltd. Optical information recording disk and optical information recording disk apparatus
DE3804701A1 (de) * 1987-03-20 1988-09-29 Hitachi Ltd Mehrfachlichtfleck-lageregeleinrichtung
JPS6482340A (en) * 1987-09-24 1989-03-28 Nikon Corp Optical disk recording and reproducing device
JPH025225A (ja) * 1988-06-24 1990-01-10 Nippon Telegr & Teleph Corp <Ntt> 光ディスク装置

Also Published As

Publication number Publication date
EP0415782A2 (fr) 1991-03-06
DE69018904T2 (de) 1995-08-31
JPH0388129A (ja) 1991-04-12
DE69018904D1 (de) 1995-06-01
EP0415782A3 (en) 1992-03-04
US5086419A (en) 1992-02-04
EP0415782B1 (fr) 1995-04-26
CA2024360C (fr) 1995-11-21
JPH0766547B2 (ja) 1995-07-19

Similar Documents

Publication Publication Date Title
CA2024360A1 (fr) Appareil a disque optique
EP0403266A3 (fr) Appareil d&#39;enregistrement et/ou de reproduction magnéto-optique
EP0336328A3 (fr) Appareil d&#39;enregistrement et de reproduction optique d&#39;information
EP0283002A3 (fr) Tête optique
EP0272873A3 (en) Tracking servo systems for optical disc players
MY115076A (en) Disc recording and/or reproducing apparatus
CA2011377A1 (fr) Dispositif de controle de la position des faisceaux laser pour systeme a disques optiques
EP0301865A3 (fr) Appareil d&#39;enregistrement optique et disque optique
EP0422227A4 (en) Optical disc recording/reproducing apparatus
CA2080057A1 (fr) Appareil d&#39;enregistrement-lecture d&#39;information a support optique
EP0387018A3 (fr) Méthode et dispositif d&#39;accès aux pistes pour appareil de disque optique
KR910006935A (ko) 광 디스크 장치의 트랙 액세스 제어회로
US5444684A (en) Seek control system of dual processor magneto-optic disk unit
KR100195557B1 (en) Optical disk and movement control of its optical spot
JPS5313309A (en) Optically reproducing unit
AU7054091A (en) A tracking system in an optical recording/reproducing device
US4530079A (en) Track following system for optical disc drive
AU4821296A (en) Improved optical disc tracking control
JPS57205834A (en) Light focusing position controller
JPS6432431A (en) Track follow-up control system for optical disk device
JPS5683874A (en) Reproducing device
JPS6482340A (en) Optical disk recording and reproducing device
JPS6423428A (en) Recording medium driver and focus tracking device in recording medium driver
JPS57186236A (en) Crosstalk eliminating device for recorded information reader
JPS6266427A (ja) 光デイスク装置のポジシヨナ駆動方式

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed