DE3887795D1 - Zugriffssystem für optische Platten. - Google Patents

Zugriffssystem für optische Platten.

Info

Publication number
DE3887795D1
DE3887795D1 DE88113952T DE3887795T DE3887795D1 DE 3887795 D1 DE3887795 D1 DE 3887795D1 DE 88113952 T DE88113952 T DE 88113952T DE 3887795 T DE3887795 T DE 3887795T DE 3887795 D1 DE3887795 D1 DE 3887795D1
Authority
DE
Germany
Prior art keywords
optical disks
access system
disks
access
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
DE88113952T
Other languages
English (en)
Other versions
DE3887795T2 (de
Inventor
Shigenori Fujitsu Limit Yanagi
Masateru Fujitsu Limite Sasaki
Akira Fujitsu Limited Minami
Toshitaka Fujitsu Limi Iwamoto
Shigeyoshi Fujitsu Limi Tanaka
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.)
Fujitsu Ltd
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 JP62214555A external-priority patent/JPH0738257B2/ja
Priority claimed from JP63008798A external-priority patent/JPH01184727A/ja
Priority claimed from JP63012314A external-priority patent/JP2746591B2/ja
Priority claimed from JP63088684A external-priority patent/JPH0748267B2/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE3887795D1 publication Critical patent/DE3887795D1/de
Application granted granted Critical
Publication of DE3887795T2 publication Critical patent/DE3887795T2/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
    • G11B7/09—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
    • G11B7/0945—Methods for initialising servos, start-up sequences
    • 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
    • G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus 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
    • G11B7/0908—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 for focusing 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
    • G11B7/094—Methods and circuits for servo offset compensation
DE3887795T 1987-08-28 1988-08-26 Zugriffssystem für optische Platten. Expired - Fee Related DE3887795T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP62214555A JPH0738257B2 (ja) 1987-08-28 1987-08-28 光ディスク装置
JP63008798A JPH01184727A (ja) 1988-01-19 1988-01-19 フォーカスサーボオフセットの自動調整方法
JP63012314A JP2746591B2 (ja) 1988-01-22 1988-01-22 光ディスク装置及びそのフォーカスオフセット自動調整方法
JP63088684A JPH0748267B2 (ja) 1988-04-11 1988-04-11 光学記憶装置

Publications (2)

Publication Number Publication Date
DE3887795D1 true DE3887795D1 (de) 1994-03-24
DE3887795T2 DE3887795T2 (de) 1994-05-19

Family

ID=27455025

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3887795T Expired - Fee Related DE3887795T2 (de) 1987-08-28 1988-08-26 Zugriffssystem für optische Platten.

Country Status (4)

Country Link
US (1) US5077719A (de)
EP (1) EP0304932B1 (de)
KR (1) KR910008499B1 (de)
DE (1) DE3887795T2 (de)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1261467A (en) * 1985-11-28 1989-09-26 Akira Minami Focus servomechanism control system of optical disc system having offset setting means
US5251194A (en) * 1989-04-17 1993-10-05 Mitsubishi Denki Kabushiki Kaisha Techniques for controlling beam position and focus in optical disk drives
JPH0721868B2 (ja) * 1989-08-04 1995-03-08 キヤノン株式会社 光情報処理装置
JPH0369025A (ja) * 1989-08-07 1991-03-25 Oki Electric Ind Co Ltd 光ディスク装置の焦点調整方法
DE69023870T2 (de) * 1989-09-29 1996-04-25 Fujitsu Ltd Spurfolgkreis für optische Scheibeeinheit.
US5351224A (en) * 1990-03-08 1994-09-27 Oki Electric Industry Co., Ltd. Adjustment of tracking servo and focusing servo in optical data recording/reproducing apparatus
JP2540224B2 (ja) * 1990-05-22 1996-10-02 松下電器産業株式会社 光ディスクのサ―ボ装置
JP2793698B2 (ja) * 1990-06-18 1998-09-03 株式会社リコー フオーカスオフセット補正方法
US5164932A (en) * 1990-09-28 1992-11-17 International Business Machines Corporation Acquiring a best focus using a focus signal offset
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
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
FR2676302B1 (fr) * 1991-05-07 1993-07-16 Thomson Csf Procede de lecture des informations contenues dans un disque optique.
US5825729A (en) * 1993-12-15 1998-10-20 Canon Kabushiki Kaisha Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods
US5561645A (en) * 1994-01-10 1996-10-01 Eastman Kodak Company Method and apparatus for focusing a recording light beam on a recording medium
US5878005A (en) * 1994-09-05 1999-03-02 Canon Kabushiki Kaisha Information recording/reproducing apparatus for periodically executing servo processing
US5675562A (en) 1995-03-20 1997-10-07 Fujitsu Limited Seek control method in optical storage device
JPH097195A (ja) * 1995-06-15 1997-01-10 Fujitsu Ltd 焦点制御方法及び光ディスク装置
US6128267A (en) * 1996-04-01 2000-10-03 International Business Machines Corporation Active tracking method for optical disk storage
FR2770324B1 (fr) * 1997-10-29 2000-01-28 Atg Sa Procede et dispositif de fermeture de la boucle de focalisation d'un lecteur-enregistreur de disque optique
US6088309A (en) * 1998-02-13 2000-07-11 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a method for controlling vertical laser alignment
US6097681A (en) * 1998-02-13 2000-08-01 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for determining angular position, θ
US6128262A (en) * 1998-02-13 2000-10-03 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a method for customizing said media with timing information
US6081489A (en) * 1998-02-13 2000-06-27 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for performing both read and write operations
US5892739A (en) * 1998-02-13 1999-04-06 International Business Machines Corporation In system for creating reading and writing on rotatable information storage media, an apparatus for multilayer source positioning using the laser source as a detector
US6088306A (en) * 1998-02-13 2000-07-11 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for combined writing and reading operations
US6222813B1 (en) 1998-02-13 2001-04-24 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for controlling vertical laser alignment
US6034929A (en) * 1998-02-13 2000-03-07 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a method for multi-layer laser source positioning
US5872723A (en) * 1998-02-13 1999-02-16 International Business Machines Corporation In a system for creating, reading and writing on rotatable information storage media an apparatus for determining drive mechanism aging characteristics
US6081487A (en) * 1998-02-13 2000-06-27 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for controlling laser positioning
US6232045B1 (en) 1998-02-13 2001-05-15 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a method for producing a recording blank
US6088308A (en) * 1998-02-13 2000-07-11 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a tracking circuit for providing positioning information
US6097677A (en) * 1998-02-13 2000-08-01 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a method for combined writing and reading operations
US6049512A (en) * 1998-02-13 2000-04-11 International Business Machines Corporation In a system for creating, reading and writing on rotatable information storage media, an apparatus for two-sided writing
US6108282A (en) * 1998-02-13 2000-08-22 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for multilayer laser source positioning
US6046970A (en) * 1998-02-13 2000-04-04 International Business Machines Corporation System for creating, reading and writing on rotatable storage media, an apparatus for determining laser aging characteristics
US6111830A (en) * 1998-02-13 2000-08-29 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, an apparatus for determining linear and/or angular velocity
US6118740A (en) * 1998-02-13 2000-09-12 International Business Machines Corporation System for creating, reading and writing on rotatable information storage media, a method for writing closely spaced information tracks
JP2000339727A (ja) * 1999-05-18 2000-12-08 Lg Electronics Inc 光記録媒体の記録再生方法
US7061594B2 (en) * 2000-11-09 2006-06-13 Burstein Technologies, Inc. Disc drive system and methods for use with bio-discs
US7200088B2 (en) * 2001-01-11 2007-04-03 Burstein Technologies, Inc. System and method of detecting investigational features related to a sample
US7522480B2 (en) 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
US6965547B2 (en) * 2001-01-25 2005-11-15 Dphi Acquisitions, Inc. Tracking and focus servo system with error signal inverse non-linearity calibration
JP4223291B2 (ja) * 2001-05-11 2009-02-12 パナソニック株式会社 ディスク記録再生装置
US7187630B2 (en) * 2001-06-11 2007-03-06 Mitutoyo Corporation Focusing servo device and focusing servo method
CN100373473C (zh) * 2003-04-18 2008-03-05 松下电器产业株式会社 光盘控制装置
JP2005196896A (ja) * 2004-01-08 2005-07-21 Toshiba Corp 光ディスク装置およびその制御方法
US7606121B2 (en) * 2004-07-29 2009-10-20 Panasonic Corporation Optical disk drive with target focus control
CN101084544A (zh) * 2004-12-20 2007-12-05 皇家飞利浦电子股份有限公司 优化校准系统
KR20070097568A (ko) * 2005-01-13 2007-10-04 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학 저장매체에 기록시의 포커스 관리 방법 및 장치
EP1994532A4 (de) * 2005-12-04 2009-11-11 Hd2 Ltd Optisches pickup-verfahren und einrichtung für ein mehrschichtiges aufzeichnungsmedium
US7839732B2 (en) * 2007-04-14 2010-11-23 Mediatek Inc. System and method for calibrating recording track offset of optical storage device
US8045436B2 (en) * 2007-11-29 2011-10-25 Mediatek Inc. Method and apparatus for adjusting focus offset based on target condition
JP2011119000A (ja) * 2009-12-07 2011-06-16 Hitachi-Lg Data Storage Inc 光ディスク装置およびデフォーカス補正方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870434A (ja) * 1981-10-22 1983-04-26 Toshiba Corp 光学ヘツド
JPS58158045A (ja) * 1982-03-16 1983-09-20 Nec Corp 焦点制御修正装置
US4581664A (en) * 1983-09-21 1986-04-08 Memorex Corporation Disk accessing circuitry
JPS60119642A (ja) * 1983-11-30 1985-06-27 Ricoh Co Ltd 光情報記録再生装置
GB2158611A (en) * 1984-05-07 1985-11-13 Rca Corp Servo error reduction apparatus for disc record playback system
JPS61123028A (ja) * 1984-11-20 1986-06-10 Matsushita Electric Ind Co Ltd 光学的デイスク装置
JPS61158038A (ja) * 1984-12-29 1986-07-17 Nec Home Electronics Ltd フオ−カスサ−ボ回路
JPS61175938A (ja) * 1985-01-29 1986-08-07 Sony Corp 光デイスク記録再生装置
JPS61188745A (ja) * 1985-02-15 1986-08-22 Olympus Optical Co Ltd フオ−カスサ−ボ制御方式
JPS61265735A (ja) * 1985-05-20 1986-11-25 Toshiba Corp デイスク装置
JPH0614407B2 (ja) * 1985-11-06 1994-02-23 キヤノン電子株式会社 サ−ボ制御回路
US4700056A (en) * 1985-11-13 1987-10-13 Optotech, Inc. Objective lens focus initialization system
CA1261467A (en) * 1985-11-28 1989-09-26 Akira Minami Focus servomechanism control system of optical disc system having offset setting means
US4866688A (en) * 1985-12-20 1989-09-12 Hitachi, Ltd. Composite tracking servo system for optical disc apparatus with track offset correction
JPS62277636A (ja) * 1986-05-27 1987-12-02 Pioneer Electronic Corp フオ−カスエラ−信号の信号レベル補正方法及びその装置
JPH0810542B2 (ja) * 1987-06-06 1996-01-31 富士通株式会社 磁気ディスク装置のトラックアクセス制御方式

Also Published As

Publication number Publication date
US5077719A (en) 1991-12-31
KR910008499B1 (ko) 1991-10-18
EP0304932A2 (de) 1989-03-01
EP0304932B1 (de) 1994-02-16
KR890004281A (ko) 1989-04-21
EP0304932A3 (de) 1991-09-11
DE3887795T2 (de) 1994-05-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee