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DE69419278D1 - Aufzeichnungs- und/oder Wiedergabegerät und Verfahren zu seiner Steuerung - Google Patents

Aufzeichnungs- und/oder Wiedergabegerät und Verfahren zu seiner Steuerung

Info

Publication number
DE69419278D1
DE69419278D1 DE69419278T DE69419278T DE69419278D1 DE 69419278 D1 DE69419278 D1 DE 69419278D1 DE 69419278 T DE69419278 T DE 69419278T DE 69419278 T DE69419278 T DE 69419278T DE 69419278 D1 DE69419278 D1 DE 69419278D1
Authority
DE
Germany
Prior art keywords
recording
control
reproducing device
reproducing
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
DE69419278T
Other languages
English (en)
Other versions
DE69419278T2 (de
Inventor
Yoshio Sasaki
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
Application granted granted Critical
Publication of DE69419278D1 publication Critical patent/DE69419278D1/de
Publication of DE69419278T2 publication Critical patent/DE69419278T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0941Methods and circuits for servo gain or phase compensation during operation
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0946Disposition 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 operation during external perturbations not related to the carrier or servo beam, e.g. vibration
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0948Disposition 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
DE69419278T 1993-04-12 1994-04-07 Aufzeichnungs- und/oder Wiedergabegerät und Verfahren zu seiner Steuerung Expired - Fee Related DE69419278T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10726693A JP3243883B2 (ja) 1993-04-12 1993-04-12 記録又は再生装置

Publications (2)

Publication Number Publication Date
DE69419278D1 true DE69419278D1 (de) 1999-08-05
DE69419278T2 DE69419278T2 (de) 1999-11-04

Family

ID=14454702

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69419278T Expired - Fee Related DE69419278T2 (de) 1993-04-12 1994-04-07 Aufzeichnungs- und/oder Wiedergabegerät und Verfahren zu seiner Steuerung

Country Status (4)

Country Link
US (2) US5491677A (de)
EP (1) EP0620548B1 (de)
JP (1) JP3243883B2 (de)
DE (1) DE69419278T2 (de)

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DE4103974A1 (de) * 1991-02-09 1992-08-13 Thomson Brandt Gmbh Optisches aufzeichnungs- und/oder wiedergabegeraet
JP3622986B2 (ja) * 1991-07-16 2005-02-23 ソニー株式会社 デイスク記録装置

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EP0620548A1 (de) 1994-10-19
DE69419278T2 (de) 1999-11-04
EP0620548B1 (de) 1999-06-30
US5532991A (en) 1996-07-02
JPH06302104A (ja) 1994-10-28
US5491677A (en) 1996-02-13
JP3243883B2 (ja) 2002-01-07

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