DE69623224D1 - Servospurfolgegerät für optische Platten - Google Patents

Servospurfolgegerät für optische Platten

Info

Publication number
DE69623224D1
DE69623224D1 DE69623224T DE69623224T DE69623224D1 DE 69623224 D1 DE69623224 D1 DE 69623224D1 DE 69623224 T DE69623224 T DE 69623224T DE 69623224 T DE69623224 T DE 69623224T DE 69623224 D1 DE69623224 D1 DE 69623224D1
Authority
DE
Germany
Prior art keywords
optical disks
servo tracker
tracker
servo
disks
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 - Lifetime
Application number
DE69623224T
Other languages
English (en)
Inventor
Yasuo 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 DE69623224D1 publication Critical patent/DE69623224D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/085—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
    • G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
    • 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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/10563—Access of indexed parts
    • 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
    • G11B7/0943—Methods and circuits for performing mathematical operations on individual detector segment outputs

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
DE69623224T 1995-10-19 1996-10-18 Servospurfolgegerät für optische Platten Expired - Lifetime DE69623224D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29626895A JP3550836B2 (ja) 1995-10-19 1995-10-19 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

Publications (1)

Publication Number Publication Date
DE69623224D1 true DE69623224D1 (de) 2002-10-02

Family

ID=17831378

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69623224T Expired - Lifetime DE69623224D1 (de) 1995-10-19 1996-10-18 Servospurfolgegerät für optische Platten

Country Status (5)

Country Link
US (2) US5930211A (de)
EP (3) EP0769776B1 (de)
JP (1) JP3550836B2 (de)
KR (1) KR100462914B1 (de)
DE (1) DE69623224D1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19748188A1 (de) * 1997-10-31 1999-05-06 Thomson Brandt Gmbh Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger
JP3882303B2 (ja) * 1997-12-26 2007-02-14 ソニー株式会社 光ディスクの記録及び／又は再生装置並びに光ディスクのトラッキング制御方法
JP3645711B2 (ja) * 1998-05-27 2005-05-11 松下電器産業株式会社 光ディスク装置および光ディスク制御方法
US6459664B1 (en) * 1998-08-31 2002-10-01 Matsushita Electric Industrial Co., Ltd. Optical disc tilt control apparatus
JP3384336B2 (ja) 1998-09-03 2003-03-10 ティアック株式会社 情報記憶装置
JP4258046B2 (ja) * 1998-11-17 2009-04-30 ソニー株式会社 ディスクドライブ装置
JP3503513B2 (ja) * 1999-02-22 2004-03-08 ヤマハ株式会社 光ディスク記録方法及び装置
WO2000051114A1 (fr) * 1999-02-26 2000-08-31 Matsushita Electric Industrial Co., Ltd. Dispositif d'enregistrement/lecture d'informations optiques
JP2000322743A (ja) * 1999-05-13 2000-11-24 Sony Precision Technology Inc 光ディスクのクロストークの測定方法及び測定装置
US6633520B1 (en) * 1999-06-14 2003-10-14 Oak Technology, Inc. Method and apparatus for searching in a disk drive
US6798724B1 (en) * 2000-06-01 2004-09-28 Hewlett-Packard Development Company, L.P. Low cost detection of wobble inversions using a tuned circuit
JP2003203366A (ja) * 2002-01-09 2003-07-18 Texas Instr Japan Ltd 光ディスク用サーボエラー検出装置
US6982935B2 (en) * 2002-02-01 2006-01-03 Discovision Associates Pause control for a media player with a movable pickup
DE102004019692A1 (de) * 2004-04-20 2005-11-10 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung für das Spurzählen bei optischen Aufzeichnungsträgern
JP2007272972A (ja) * 2006-03-30 2007-10-18 Sharp Corp 前段アンプ回路、受光アンプ回路、ならびに光ピックアップ装置
US11557319B1 (en) * 2021-08-24 2023-01-17 Seagate Technology Llc Read offset calibration for error recovery
US11568895B1 (en) 2021-09-03 2023-01-31 Seagate Technology Llc Read offset calibration for error recovery

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1270559A (en) * 1985-10-30 1990-06-19 Shigeo Terashima Tracking circuit for an optical information recording and reproducing apparatus
US4866688A (en) * 1985-12-20 1989-09-12 Hitachi, Ltd. Composite tracking servo system for optical disc apparatus with track offset correction
JPS62267929A (ja) * 1986-05-16 1987-11-20 Hitachi Ltd 記録再生形光デイスク装置のトラツキング制御回路
JPS6450244A (en) * 1987-08-20 1989-02-27 Fujitsu General Ltd Optical disk recording and reproducing device
JPH01211326A (ja) * 1988-02-19 1989-08-24 Matsushita Electric Ind Co Ltd アクチュエーター駆動回路
JPH02285526A (ja) * 1989-04-27 1990-11-22 Olympus Optical Co Ltd トラッキングサーボループのオフセット補正装置
JPH0322831A (ja) * 1989-06-20 1991-01-31 Matsushita Electric Ind Co Ltd 電源回路
JPH0721868B2 (ja) * 1989-08-04 1995-03-08 キヤノン株式会社 光情報処理装置
JP2593941B2 (ja) * 1989-08-19 1997-03-26 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除去装置
JPH03130972A (ja) * 1989-10-16 1991-06-04 Matsushita Electric Ind Co Ltd トラック検索装置及びトラッキング制御装置
US5253239A (en) * 1989-11-24 1993-10-12 Matsushita Electric Industrial Co., Ltd. Control apparatus for tracking a light beam on a track of an optical recording medium
JPH03228231A (ja) * 1990-02-01 1991-10-09 Matsushita Electric Ind Co Ltd トラッキングオフセット補正装置、トラッキング誤差検出装置及びこれらを用いたトラッキング制御装置
JPH0453036A (ja) * 1990-06-20 1992-02-20 Hitachi Maxell Ltd 光学情報記録再生装置
US5210732A (en) * 1990-11-27 1993-05-11 Matsushita Electric Industrial Co., Ltd. Optical disk apparatus
JPH04219633A (ja) * 1990-12-19 1992-08-10 Mitsubishi Electric Corp 追跡装置
JPH04313818A (ja) * 1991-01-30 1992-11-05 Pioneer Electron Corp アクチュエータ位置検出装置、アクチュエータ位置制御装置及びトラックサーチ制御装置
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
JP3051526B2 (ja) * 1991-11-08 2000-06-12 パイオニア株式会社 光学式記録再生装置における光ヘッドのサーボ装置
JPH0734879B2 (ja) 1992-03-17 1995-04-19 三菱化工機株式会社 液液分離用遠心分離装置
JP3237237B2 (ja) * 1992-10-16 2001-12-10 ソニー株式会社 光ヘッド装置、光ディスク装置及びトラッキングエラー検出方法
JPH06139587A (ja) * 1992-10-29 1994-05-20 Taiyo Yuden Co Ltd 光ディスクの情報記録再生方法及びその装置
US5517474A (en) * 1993-03-02 1996-05-14 Matsushita Electric Industrial Co., Ltd. Tracking controller for correcting a tracking error offset
US5982722A (en) 1994-05-17 1999-11-09 Sony Corporation Tracking servo apparatus for carrying out tracking by eliminating an offset component from an output signal and method therefor
JPH08306054A (ja) * 1995-04-28 1996-11-22 Sony Corp トラッキングサーボ回路
JP3063596B2 (ja) * 1995-11-24 2000-07-12 三菱電機株式会社 光ディスク装置および光ディスク
JP3092510B2 (ja) * 1996-04-15 2000-09-25 三菱電機株式会社 光ディスク媒体及び光ディスク装置

Also Published As

Publication number Publication date
JPH09115153A (ja) 1997-05-02
EP0769776A1 (de) 1997-04-23
EP1089267A1 (de) 2001-04-04
US6233208B1 (en) 2001-05-15
US5930211A (en) 1999-07-27
JP3550836B2 (ja) 2004-08-04
KR970023039A (ko) 1997-05-30
EP1089266A1 (de) 2001-04-04
KR100462914B1 (ko) 2005-04-19
EP0769776B1 (de) 2002-08-28

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Legal Events

Date Code Title Description
8332 No legal effect for de