DE69019437D1 - Antriebseinheiten für optische Platte. - Google Patents

Antriebseinheiten für optische Platte.

Info

Publication number
DE69019437D1
DE69019437D1 DE69019437T DE69019437T DE69019437D1 DE 69019437 D1 DE69019437 D1 DE 69019437D1 DE 69019437 T DE69019437 T DE 69019437T DE 69019437 T DE69019437 T DE 69019437T DE 69019437 D1 DE69019437 D1 DE 69019437D1
Authority
DE
Germany
Prior art keywords
optical disk
disk drive
drive units
units
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
DE69019437T
Other languages
English (en)
Other versions
DE69019437T2 (de
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.)
Panasonic Corp
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
Application granted granted Critical
Publication of DE69019437D1 publication Critical patent/DE69019437D1/de
Publication of DE69019437T2 publication Critical patent/DE69019437T2/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
    • G11B7/085—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
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors
    • 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
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in 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
    • G11B7/08—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
    • 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
DE69019437T 1989-08-19 1990-08-17 Antriebseinheiten für optische Platte. Expired - Fee Related DE69019437T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1213421A JP2593941B2 (ja) 1989-08-19 1989-08-19 光ディスク装置のアクチュエータオフセット除去装置

Publications (2)

Publication Number Publication Date
DE69019437D1 true DE69019437D1 (de) 1995-06-22
DE69019437T2 DE69019437T2 (de) 1995-10-05

Family

ID=16638947

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69019437T Expired - Fee Related DE69019437T2 (de) 1989-08-19 1990-08-17 Antriebseinheiten für optische Platte.

Country Status (4)

Country Link
US (1) US5189653A (de)
EP (1) EP0414450B1 (de)
JP (1) JP2593941B2 (de)
DE (1) DE69019437T2 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265079A (en) 1991-02-15 1993-11-23 Applied Magnetics Corporation Seek actuator for optical recording
US6141300A (en) 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
US5448540A (en) * 1990-09-21 1995-09-05 Victor Company Of Japan, Ltd. Device for detecting the position of a recording/reproducing element
US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US5729511A (en) 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US6069857A (en) 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
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
JP2682748B2 (ja) * 1991-03-05 1997-11-26 富士通株式会社 光記録媒体のトラック横断信号作成回路
JP2930750B2 (ja) * 1991-03-06 1999-08-03 パイオニア株式会社 光学式記録装置
JPH05109092A (ja) * 1991-10-14 1993-04-30 Sony Corp 光テープ記録再生装置
US5475661A (en) * 1992-04-07 1995-12-12 Matsushita Electric Industrial Co., Ltd. Objective lens actuator having frame-shaped leaf springs for minimizing focusing and tracking errors
US5543292A (en) * 1992-06-16 1996-08-06 Hitachi, Ltd. Process for the measurement of nucleic acids
US5566152A (en) * 1992-10-21 1996-10-15 Matsushita Electric Industrial Co., Ltd. Tracking control system with correction capabilities for correcting disagreement between optical axes
JP3263258B2 (ja) * 1994-09-30 2002-03-04 富士通株式会社 光ディスク装置のアクチュエータオフセット量検出方法及び装置
US5748578A (en) 1995-01-25 1998-05-05 Discovision Associates Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
US6091684A (en) 1995-01-25 2000-07-18 Discovision Associates Optical disc system and method for changing the rotational rate of an information storage medium
US6434087B1 (en) 1995-01-25 2002-08-13 Discovision Associates Optical disc system and method for controlling bias coil and light source to process information on a storage medium
JP3505282B2 (ja) * 1995-07-31 2004-03-08 株式会社東芝 光ヘッド装置および情報処理装置
JP3550836B2 (ja) * 1995-10-19 2004-08-04 ソニー株式会社 光学装置におけるトラッキングサーボ装置及びトラッキングサーボ方法
DE19630887A1 (de) * 1996-07-31 1998-02-05 Thomson Brandt Gmbh Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger
JP3588519B2 (ja) * 1996-08-19 2004-11-10 富士通株式会社 光学的記憶装置
KR100518514B1 (ko) 1998-02-20 2005-11-24 삼성전자주식회사 하드 디스크 드라이브에서 엑츄에이터 온트랙 제어장치및 그방법
JP2001204463A (ja) * 2000-01-27 2001-07-31 Toyo Kohan Co Ltd ヌクレオチド固定用担体
TWI316243B (en) * 2005-07-14 2009-10-21 Quanta Storage Inc A seeking method of an optical disk player
US7400567B2 (en) * 2005-11-29 2008-07-15 Canon Kabushiki Kaisha Optical information recording-reproduction apparatus
JP4609735B2 (ja) * 2008-03-31 2011-01-12 ソニー株式会社 情報処理装置および方法、プログラム、並びに記録再生装置
US8760833B2 (en) * 2012-02-14 2014-06-24 Hewlett Packard Development Company, L.P. Apparatus and methods for limiting surges in load current

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7812111A (nl) * 1978-12-13 1980-06-17 Philips Nv Inrichting voor het optisch uitlezen van een schijf- vormige registratiedrager, in het bijzonder het snel opzoeken van een gewenst programmagedeelte.
FR2497378B1 (fr) * 1980-12-29 1985-06-28 Thomson Csf Dispositif compensateur de desequilibre d'un miroir de renvoi appartenant a un systeme optique d'eclairement d'un support d'information
US4674076A (en) * 1982-05-19 1987-06-16 Burroughs Corporation Optical memory system having improved positioning and focusing control circuitry
JPS5928255A (ja) * 1982-08-05 1984-02-14 Aiwa Co Ltd 光学式情報再生装置
JPS5977639A (ja) * 1982-10-25 1984-05-04 Hitachi Ltd 光ディスク記録再生方法
JPS59168835U (ja) * 1983-04-27 1984-11-12 パイオニア株式会社 光学式記録情報読取装置
DE3324861C2 (de) * 1983-07-09 1986-02-13 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Lesevorrichtung zum optischen Abtasten von auf einem bewegten plattenförmigen Träger aufgezeichneten Informationen
JPS61208641A (ja) * 1985-03-13 1986-09-17 Olympus Optical Co Ltd 光学的情報記録再生装置
JPS6222245A (ja) * 1985-07-22 1987-01-30 Seiko Epson Corp 光学ピツクアツプ
US4768180A (en) * 1986-03-17 1988-08-30 Laser Magnetic Storage International Company Multistage tracking system
JPS62219335A (ja) * 1986-03-20 1987-09-26 Ricoh Co Ltd トラツク信号検出方法
JPS6337828A (ja) * 1986-07-30 1988-02-18 Ricoh Co Ltd 光情報記録再生装置
JPS6437729A (en) * 1987-08-04 1989-02-08 Canon Kk Optical information recording and reproducing device
JPH0196835A (ja) * 1987-10-07 1989-04-14 Csk Corp 光メモリカードのトラッキング装置

Also Published As

Publication number Publication date
EP0414450B1 (de) 1995-05-17
JP2593941B2 (ja) 1997-03-26
US5189653A (en) 1993-02-23
DE69019437T2 (de) 1995-10-05
EP0414450A2 (de) 1991-02-27
JPH0378120A (ja) 1991-04-03
EP0414450A3 (en) 1991-11-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP

8339 Ceased/non-payment of the annual fee