DE3372032D1 - Optical unit associated with an optical head for reading/writing an optical disc - Google Patents

Optical unit associated with an optical head for reading/writing an optical disc

Info

Publication number
DE3372032D1
DE3372032D1 DE8383400360T DE3372032T DE3372032D1 DE 3372032 D1 DE3372032 D1 DE 3372032D1 DE 8383400360 T DE8383400360 T DE 8383400360T DE 3372032 T DE3372032 T DE 3372032T DE 3372032 D1 DE3372032 D1 DE 3372032D1
Authority
DE
Germany
Prior art keywords
optical
writing
reading
unit associated
head
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
Application number
DE8383400360T
Other languages
English (en)
Inventor
Roland Malissin
Claude Monlouis
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of DE3372032D1 publication Critical patent/DE3372032D1/de
Expired 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
    • 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
    • G11B7/0908—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 focusing 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of Heads (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
DE8383400360T 1982-03-02 1983-02-22 Optical unit associated with an optical head for reading/writing an optical disc Expired DE3372032D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8203425A FR2522860B1 (fr) 1982-03-02 1982-03-02 Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete

Publications (1)

Publication Number Publication Date
DE3372032D1 true DE3372032D1 (en) 1987-07-16

Family

ID=9271492

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383400360T Expired DE3372032D1 (en) 1982-03-02 1983-02-22 Optical unit associated with an optical head for reading/writing an optical disc

Country Status (6)

Country Link
US (1) US4554653A (de)
EP (1) EP0088662B1 (de)
JP (1) JPS58159249A (de)
CA (1) CA1212763A (de)
DE (1) DE3372032D1 (de)
FR (1) FR2522860B1 (de)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5996564A (ja) * 1982-11-22 1984-06-04 Olympus Optical Co Ltd 記録再生装置
JPS6095735A (ja) * 1983-10-31 1985-05-29 Hitachi Ltd 対物レンズ駆動装置
JPS60102726U (ja) * 1983-12-19 1985-07-13 パイオニア株式会社 光学式情報読取装置
US4696566A (en) * 1984-02-08 1987-09-29 Sharp Kabushiki Kaisha Three-dimensional driving arrangement
JPH064415Y2 (ja) * 1984-04-23 1994-02-02 パイオニア株式会社 レンズ駆動装置
JPS60239943A (ja) * 1984-05-15 1985-11-28 Matsushita Electric Ind Co Ltd 光学ヘツド
US5683688A (en) * 1984-05-31 1997-11-04 Genentech, Inc. Unglycosylated recombinant human lymphotoxin polypeptides and compositions
JPS6122448A (ja) * 1984-07-10 1986-01-31 Fujitsu Ltd 光学ヘツド位置決め機構
JPS6124820U (ja) * 1984-07-13 1986-02-14 パイオニア株式会社 レンズ駆動装置
JPS6137165U (ja) * 1984-08-10 1986-03-07 住友特殊金属株式会社 磁気ヘツドの位置決め装置
JPS61202340A (ja) * 1985-03-04 1986-09-08 Fujitsu Ltd 光デイスク装置の焦点制御機構
JPS6214331A (ja) * 1985-07-12 1987-01-22 Oki Electric Ind Co Ltd 光学ヘツド
EP0214529B1 (de) * 1985-08-27 1991-01-02 Siemens Aktiengesellschaft Positioniereinrichtung für einen optischen Datenspeicher
JP2552109B2 (ja) * 1985-11-08 1996-11-06 セイコーエプソン株式会社 光記録再生装置
EP0225564A3 (en) * 1985-11-30 1988-07-06 Kabushiki Kaisha Toshiba Optical head
JP2611974B2 (ja) * 1986-05-27 1997-05-21 三菱電機株式会社 キヤリツジ組立体
US4763314A (en) * 1986-08-13 1988-08-09 Optimem Linear actuator for an optical disk storage apparatus
NL8701211A (nl) * 1987-05-21 1988-12-16 Philips Nv Samenstel omvattende een eerste en een met behulp van een lijm daaraan bevestigd tweede element alsmede een inrichting voorzien van het samenstel.
US4922477A (en) * 1987-05-30 1990-05-01 Nec Home Electronics Ltd. Optical head unit
JPH01118275A (ja) * 1987-10-31 1989-05-10 Toshiba Corp 光学ヘッド駆動装置
JPH0294126A (ja) * 1988-09-30 1990-04-04 Matsushita Electric Ind Co Ltd 対物レンズ駆動装置
DE69028217T2 (de) * 1989-06-13 1997-02-20 Toshiba Kawasaki Kk Elektromagnetisches Betätigungsgerät und optische Platte
US5265079A (en) * 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
DE69026429T2 (de) * 1989-06-30 1996-11-14 Fuji Xerox Co Ltd Magnetooptisches Aufzeichnungs-/Wiedergabegerät
US5410433A (en) * 1989-06-30 1995-04-25 Art Tech Gigadisc "Atg" Access and follower control device for optical disk
JP2771885B2 (ja) * 1990-05-08 1998-07-02 松下電器産業株式会社 光ディスク装置
US5218585A (en) * 1990-10-01 1993-06-08 International Business Machines Corporation Phase shifting feedback control in an optical disk drive
EP0486275B1 (de) * 1990-11-14 1997-05-14 Canon Kabushiki Kaisha Treibervorrichtung einer Objektivlinse
US5677899A (en) 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
ES2128338T3 (es) * 1991-07-25 1999-05-16 Canon Kk Metodo de grabacion/reproduccion de informaciones magnetoopticas que utiliza un patin flotante que soporta un cabezal magnetico y aparato para el mismo.
DE69228279T2 (de) * 1991-08-30 1999-07-08 Canon Kk Gerät für magnetooptische Platte mit schwebendem Magnetkopf
FR2683932B1 (fr) * 1991-11-19 1993-12-24 Atg Sa Dispositif d'acces et de suivi de pistes pour disque optique.
US5463612A (en) * 1991-12-05 1995-10-31 Canon Kabushiki Kaisha Objective lens drive apparatus used in optical information recording/reproducing apparatus
US5625607A (en) * 1992-02-13 1997-04-29 Canon Kabushiki Kaisha Magneto-optical disk apparatus including two magnetic field applying devices, one of which has a substantial ring-shaped core member with a gap in a portion thereof
US5436880A (en) * 1994-01-10 1995-07-25 Eastman Kodak Company Laser power control in an optical recording system using partial correction of reflected signal error
EP1338006A1 (de) * 2000-07-19 2003-08-27 Koninklijke Philips Electronics N.V. Optische abtasteinrichtung sowie mit der abtasteinrichtung versehener optischer spieler
US6654185B1 (en) * 2000-11-14 2003-11-25 Acute Applied Technologies Inc. Electromagnetic actuator having specific coil arrangement for improving utilization rate of magnetic circuit thereof
US6751183B2 (en) * 2002-02-11 2004-06-15 Pro-Techtor International Lower inertial compact disk driving device
JP4100083B2 (ja) * 2002-07-31 2008-06-11 富士通株式会社 対物レンズ駆動装置及び光記憶装置
US7352662B2 (en) * 2003-06-13 2008-04-01 Samsung Electronics Co., Ltd. Molded coil device for actuator of disc drive

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7402768A (nl) * 1974-02-28 1975-09-01 Philips Nv Inrichting voor het schrijven en/of weergeven van informatie in respektievelijk van een draaiende schijfvormige registratiedrager.
DE2661051C2 (de) * 1975-10-08 1987-10-29 Olympus Optical Co., Ltd., Tokio/Tokyo, Jp
US4185836A (en) * 1976-09-09 1980-01-29 Plessey Handel Und Investments Ag Disc record player
NL7713711A (nl) * 1977-12-12 1979-06-14 Philips Nv Optisch uitleeseenheid voor het uitlezen van een bewegende informatiedrager, in het bijzonder voor het uitlezen van een videoplaat.
NL7808638A (nl) * 1978-08-22 1980-02-26 Philips Nv Inrichting voor het uitlezen van een schijfvormige re- gistratiedrager.
JPS5542369A (en) * 1978-09-19 1980-03-25 Mitsubishi Electric Corp Pickup controller
NL7810386A (nl) * 1978-10-17 1980-04-21 Philips Nv Optische leesinrichting voor het uitlezen van een schijfvormige registratiedrager.
FR2443734A1 (fr) * 1978-12-08 1980-07-04 Thomson Csf Dispositif d'acces a une piste portee par un support enregistrable ou lisible optiquement et systeme optique comportant un tel dispositif
GB2052829B (en) * 1979-04-27 1983-01-12 Olympus Optical Co Apparatus for driving objective lens in tracking direction
JPS56170537U (de) * 1980-05-16 1981-12-16
JPS57103131A (en) * 1980-12-18 1982-06-26 Sony Corp Biaxial driver

Also Published As

Publication number Publication date
JPH0320817B2 (de) 1991-03-20
EP0088662A1 (de) 1983-09-14
JPS58159249A (ja) 1983-09-21
CA1212763A (en) 1986-10-14
FR2522860A1 (fr) 1983-09-09
US4554653A (en) 1985-11-19
EP0088662B1 (de) 1987-06-10
FR2522860B1 (fr) 1989-07-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition