NL8600680A - Toegangswerkwijze en inrichting voor onttrekking van informatie. - Google Patents

Toegangswerkwijze en inrichting voor onttrekking van informatie. Download PDF

Info

Publication number
NL8600680A
NL8600680A NL8600680A NL8600680A NL8600680A NL 8600680 A NL8600680 A NL 8600680A NL 8600680 A NL8600680 A NL 8600680A NL 8600680 A NL8600680 A NL 8600680A NL 8600680 A NL8600680 A NL 8600680A
Authority
NL
Netherlands
Prior art keywords
eccentricity
speed
head
signal
track
Prior art date
Application number
NL8600680A
Other languages
English (en)
Dutch (nl)
Original Assignee
Hitachi 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 JP60055831A external-priority patent/JPH0831262B2/ja
Priority claimed from JP60116416A external-priority patent/JP2539363B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of NL8600680A publication Critical patent/NL8600680A/nl

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
    • G11B7/085—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
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • G11B7/08588—Sled-type positioners with position sensing by means of an auxiliary system using an external scale
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
    • 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
    • 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
    • G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
NL8600680A 1985-03-22 1986-03-17 Toegangswerkwijze en inrichting voor onttrekking van informatie. NL8600680A (nl)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP60055831A JPH0831262B2 (ja) 1985-03-22 1985-03-22 光スポット位置決め方法
JP5583185 1985-03-22
JP60116416A JP2539363B2 (ja) 1985-05-31 1985-05-31 光ディスクのアクセス方法
JP11641685 1985-05-31

Publications (1)

Publication Number Publication Date
NL8600680A true NL8600680A (nl) 1986-10-16

Family

ID=26396740

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8600680A NL8600680A (nl) 1985-03-22 1986-03-17 Toegangswerkwijze en inrichting voor onttrekking van informatie.

Country Status (4)

Country Link
US (1) US4745587A (ko)
KR (1) KR940002001B1 (ko)
DE (1) DE3609460A1 (ko)
NL (1) NL8600680A (ko)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543568A1 (de) * 1985-12-10 1987-06-11 Thomson Brandt Gmbh Verfahren fuer das spursuchen bei einem rotierenden plattenfoermigen informationstraeger und schaltungsanordnung zur durchfuehrung des verfahrens
US4864552A (en) * 1986-08-29 1989-09-05 Laser Magnetic Storage International Company Driving signal for coarse servo employing sampled offset signal
US4982389A (en) * 1987-01-30 1991-01-01 Hitachi, Ltd. Magneto-optical recorder with compensation for variation in applied magnetic field intensity on a recording medium
JPS63269324A (ja) * 1987-04-28 1988-11-07 Mitsubishi Electric Corp 光デイスク駆動装置
US4871903A (en) * 1987-07-31 1989-10-03 General Electric Company Apparatus for rapidly accessing a large data base employing an optical disc reading system with multiple heads and track position compensation means
JPH01263978A (ja) * 1988-04-14 1989-10-20 Matsushita Electric Ind Co Ltd 情報トラックの検索装置
JP2573301B2 (ja) * 1988-04-22 1997-01-22 株式会社東芝 ディスク装置
JP2732591B2 (ja) * 1988-06-30 1998-03-30 株式会社東芝 記録媒体処理装置
US5270988A (en) * 1988-08-08 1993-12-14 Olympus Optical Co., Ltd. Optical recording and reproducing apparatus making access by multitrack jump
JPH0279223A (ja) * 1988-09-16 1990-03-19 Hitachi Ltd 光学式記録再生装置
US5396477A (en) * 1988-09-21 1995-03-07 Hitachi, Ltd. Light spot positioning method and optical disc memory apparatus employing the same
JP2785290B2 (ja) * 1988-12-19 1998-08-13 ソニー株式会社 光ディスクのシーク及びトラッキング装置
JPH02187932A (ja) * 1989-01-12 1990-07-24 Olympus Optical Co Ltd 光ビーム移動装置
US4972350A (en) * 1989-05-26 1990-11-20 Literal Corporation Position mode track seek servo for high capacity disk drive system
JPH03205619A (ja) * 1989-10-11 1991-09-09 Olympus Optical Co Ltd 光ディスクのアクセス装置
JP3063230B2 (ja) * 1991-05-31 2000-07-12 ソニー株式会社 書き換え可能なディスクおよびディスク装置
JPH05325210A (ja) * 1992-05-26 1993-12-10 Pioneer Electron Corp トラックジャンプ制御装置
KR100292038B1 (ko) * 1992-12-04 2001-06-01 이데이 노부유끼 디스크장치
JP2928849B2 (ja) * 1993-12-10 1999-08-03 株式会社日本コンラックス 光学的情報記録再生装置におけるトラックシーク方法及び装置
US5623464A (en) * 1994-09-29 1997-04-22 Fujitsu Limited Optical disk apparatus and seek control method
KR100271569B1 (ko) * 1997-08-25 2000-11-15 구자홍 편심억압서보방법및이를이용한서보장치
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
US6498772B1 (en) * 1999-09-20 2002-12-24 Matsushita Electric Industrial Co., Ltd. Optical disc apparatus
US6765848B2 (en) * 2001-01-10 2004-07-20 Infineon Technologies North America Corp. Focus and tracking repeatable runout compensator
KR20030084399A (ko) * 2002-04-26 2003-11-01 삼성전기주식회사 광 디스크의 트랙 편차 보정방법
EP1475789A1 (en) * 2003-05-07 2004-11-10 Deutsche Thomson-Brandt Gmbh Track jumping for optical recording media
US7057836B1 (en) * 2004-11-19 2006-06-06 Western Digital Technologies, Inc. Disk drive servo controller utilizing an extended servo header
JP4963593B2 (ja) * 2006-11-09 2012-06-27 ソニー株式会社 光ディスク装置、トラッキング制御開始方法及びトラッキング制御開始プログラム

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549439A (en) * 1976-07-06 1979-08-08 Data Recording Instr Co Magnetic disc storage devices
US4135217A (en) * 1976-11-02 1979-01-16 Xerox Corporation Utilization of stored run-out information in a track following servo system
FR2396379A1 (fr) * 1977-07-01 1979-01-26 Thomson Brandt Lecteur optique de disque d'information muni d'un dispositif d'acces automatique aux informations
JPS56153562A (en) * 1980-04-26 1981-11-27 Matsushita Electric Ind Co Ltd Recorder and reproducer
JPS57108811A (en) * 1980-12-26 1982-07-07 Hitachi Ltd Optical focus position detector
JPS57181436A (en) * 1981-05-01 1982-11-08 Toshiba Corp Optical disc device
KR880000999B1 (ko) * 1981-11-25 1988-06-10 미쓰다 가쓰시게 광학적 정보 기억장치
JPS58158081A (ja) * 1982-03-15 1983-09-20 Toshiba Corp 情報記録装置
JPS5940378A (ja) * 1982-08-31 1984-03-06 Toshiba Corp デイスク装置
JPS59175071A (ja) * 1983-03-25 1984-10-03 Hitachi Ltd 情報検索装置
EP0130248B1 (en) * 1983-06-30 1987-11-25 International Business Machines Corporation Track following servo system for a disk file
JPS6052971A (ja) * 1983-09-02 1985-03-26 Fujitsu Ltd 光ディスクの位置決め方法
JPS60131640A (ja) * 1983-12-20 1985-07-13 Canon Inc 光デイスク装置のトラツクアクセス方法

Also Published As

Publication number Publication date
US4745587A (en) 1988-05-17
KR860007642A (ko) 1986-10-15
DE3609460A1 (de) 1986-10-16
KR940002001B1 (ko) 1994-03-12
DE3609460C2 (ko) 1989-08-03

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BV The patent application has lapsed