FR2437042B1 - Appareil de commande de lecture - Google Patents

Appareil de commande de lecture

Info

Publication number
FR2437042B1
FR2437042B1 FR7923119A FR7923119A FR2437042B1 FR 2437042 B1 FR2437042 B1 FR 2437042B1 FR 7923119 A FR7923119 A FR 7923119A FR 7923119 A FR7923119 A FR 7923119A FR 2437042 B1 FR2437042 B1 FR 2437042B1
Authority
FR
France
Prior art keywords
control apparatus
reading control
reading
control
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
FR7923119A
Other languages
English (en)
Other versions
FR2437042A1 (fr
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of FR2437042A1 publication Critical patent/FR2437042A1/fr
Application granted granted Critical
Publication of FR2437042B1 publication Critical patent/FR2437042B1/fr
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
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0932—Details of sprung supports
    • 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 The Head For Recording And Reproducing By Optical Means (AREA)
  • Automatic Focus Adjustment (AREA)
FR7923119A 1978-09-19 1979-09-17 Appareil de commande de lecture Expired FR2437042B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11608878A JPS5542369A (en) 1978-09-19 1978-09-19 Pickup controller

Publications (2)

Publication Number Publication Date
FR2437042A1 FR2437042A1 (fr) 1980-04-18
FR2437042B1 true FR2437042B1 (fr) 1985-10-11

Family

ID=14678405

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7923119A Expired FR2437042B1 (fr) 1978-09-19 1979-09-17 Appareil de commande de lecture

Country Status (3)

Country Link
JP (1) JPS5542369A (fr)
FR (1) FR2437042B1 (fr)
NL (1) NL183791C (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064848B (en) * 1979-11-12 1983-09-14 Nippon Telegraph & Telephone Pick up device for use in a video and/or audio information readout apparatus
FR2474740A1 (fr) * 1980-01-24 1981-07-31 Thomson Csf Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage
US4592037A (en) * 1980-11-28 1986-05-27 Hitachi, Ltd. Device for displacing a pickup head in multi-axial directions
FR2522860B1 (fr) * 1982-03-02 1989-07-13 Thomson Csf Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete
US4696566A (en) * 1984-02-08 1987-09-29 Sharp Kabushiki Kaisha Three-dimensional driving arrangement
NL8701526A (nl) * 1987-06-30 1989-01-16 Philips Nv Inrichting voor het optisch aftasten van een roterende plaat.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946367A (en) * 1972-12-20 1976-03-23 Videonics Of Hawaii, Inc. Three dimensional electro-optical retrieval system
US3848095A (en) * 1972-12-20 1974-11-12 I O Metrics Corp Three dimensional electro-optical retrieval system
US4003059A (en) * 1974-02-07 1977-01-11 Canon Kabushiki Kaisha Optical recorder having focus controlling means
US4092529A (en) * 1975-10-08 1978-05-30 Olympus Optical Company Limited Detecting head for use in an apparatus for reading optically an information recorded on a record carrier as a track or tracks
NL176315C (nl) * 1976-05-12 1985-03-18 Philips Nv Optische aftastinrichting.
NL7608561A (nl) * 1976-08-02 1978-02-06 Philips Nv Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur.
NL7703232A (nl) * 1977-03-25 1978-09-27 Philips Nv Optische aftastinrichting.

Also Published As

Publication number Publication date
NL183791C (nl) 1989-01-16
NL7906866A (nl) 1980-03-21
NL183791B (nl) 1988-08-16
JPS5542369A (en) 1980-03-25
FR2437042A1 (fr) 1980-04-18

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