DE69123636D1 - Such-Positionierungssystem für Scheibengerät - Google Patents

Such-Positionierungssystem für Scheibengerät

Info

Publication number
DE69123636D1
DE69123636D1 DE69123636T DE69123636T DE69123636D1 DE 69123636 D1 DE69123636 D1 DE 69123636D1 DE 69123636 T DE69123636 T DE 69123636T DE 69123636 T DE69123636 T DE 69123636T DE 69123636 D1 DE69123636 D1 DE 69123636D1
Authority
DE
Germany
Prior art keywords
positioning system
disc device
search positioning
search
disc
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
DE69123636T
Other languages
English (en)
Other versions
DE69123636T2 (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
Priority claimed from JP12760790A external-priority patent/JP2656369B2/ja
Priority claimed from JP12760890A external-priority patent/JP2610358B2/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69123636D1 publication Critical patent/DE69123636D1/de
Publication of DE69123636T2 publication Critical patent/DE69123636T2/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
    • G11B7/08505—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
DE69123636T 1990-05-17 1991-05-08 Such-Positionierungssystem für Scheibengerät Expired - Fee Related DE69123636T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12760790A JP2656369B2 (ja) 1990-05-17 1990-05-17 光ディスク装置
JP12760890A JP2610358B2 (ja) 1990-05-17 1990-05-17 光ディスク装置

Publications (2)

Publication Number Publication Date
DE69123636D1 true DE69123636D1 (de) 1997-01-30
DE69123636T2 DE69123636T2 (de) 1997-04-17

Family

ID=26463523

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69123636T Expired - Fee Related DE69123636T2 (de) 1990-05-17 1991-05-08 Such-Positionierungssystem für Scheibengerät

Country Status (3)

Country Link
US (1) US5258966A (de)
EP (1) EP0457194B1 (de)
DE (1) DE69123636T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04351720A (ja) * 1991-05-29 1992-12-07 Canon Inc 情報記録再生装置
KR0167891B1 (ko) * 1992-04-06 1999-03-20 강진구 디스크 시스템의 조기 브레이크 구동방법
JP3633095B2 (ja) * 1996-04-22 2005-03-30 富士通株式会社 光学的記憶装置
JPH09305984A (ja) * 1996-05-20 1997-11-28 Fujitsu Ltd 光学的記憶装置
US6768705B2 (en) * 1998-07-17 2004-07-27 Fujitsu Limited Optical disk drive including a positioner and means for compensating for an eccentricity of an optical disk
JP3927438B2 (ja) * 2001-12-06 2007-06-06 富士通株式会社 光学的記憶装置及び光学装置
KR20040029716A (ko) * 2002-10-02 2004-04-08 삼성전자주식회사 디스크 구동기의 트랙킹 제어 방법 및 장치
TWI227886B (en) * 2003-08-08 2005-02-11 Lite On It Corp A method of correcting the position of the optical pickup before track following
US7904182B2 (en) * 2005-06-08 2011-03-08 Brooks Automation, Inc. Scalable motion control system
US7633840B2 (en) * 2006-06-09 2009-12-15 Lsi Corporation Optimizing focus point for optical disc
CN106773651B (zh) * 2016-12-31 2020-01-17 深圳市优必选科技有限公司 舵机临界点锁位方法和装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618137A1 (de) * 1985-05-31 1986-12-11 Hitachi, Ltd., Tokio/Tokyo Bildplatten-zugriffsverfahren und bildplattenspeicher
JPS63273219A (ja) * 1987-04-30 1988-11-10 Mitsubishi Electric Corp 光デイスク駆動装置
WO1989002150A1 (en) * 1987-08-29 1989-03-09 Fujitsu Limited Methods of accessing an optical recording track
US5003524A (en) * 1987-12-26 1991-03-26 Kabushiki Kaisha Toshiba Optical disk drive with an accurately positioned objective lens
US5038333A (en) * 1989-05-05 1991-08-06 International Business Machines Corporation Positioning systems including reliable track crossing detection for high speed relative motions
US4914725A (en) * 1989-07-10 1990-04-03 International Business Machines Corporation Transducer positioning servo mechanisms employing digital and analog circuits
EP0420696B1 (de) * 1989-09-29 1995-11-29 Fujitsu Limited Spurfolgkreis für optische Scheibeeinheit

Also Published As

Publication number Publication date
EP0457194A2 (de) 1991-11-21
DE69123636T2 (de) 1997-04-17
EP0457194A3 (en) 1992-02-26
EP0457194B1 (de) 1996-12-18
US5258966A (en) 1993-11-02

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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