DE69420998D1 - Optischer Plattenspeicher - Google Patents

Optischer Plattenspeicher

Info

Publication number
DE69420998D1
DE69420998D1 DE69420998T DE69420998T DE69420998D1 DE 69420998 D1 DE69420998 D1 DE 69420998D1 DE 69420998 T DE69420998 T DE 69420998T DE 69420998 T DE69420998 T DE 69420998T DE 69420998 D1 DE69420998 D1 DE 69420998D1
Authority
DE
Germany
Prior art keywords
optical disk
disk storage
storage
optical
disk
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
DE69420998T
Other languages
English (en)
Other versions
DE69420998T2 (de
Inventor
Tetsuo Semba
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE69420998D1 publication Critical patent/DE69420998D1/de
Application granted granted Critical
Publication of DE69420998T2 publication Critical patent/DE69420998T2/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
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
DE69420998T 1993-04-23 1994-04-11 Optischer Plattenspeicher Expired - Fee Related DE69420998T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5097519A JP2826252B2 (ja) 1993-04-23 1993-04-23 光ディスク・ドライブ及びその信号校正方法

Publications (2)

Publication Number Publication Date
DE69420998D1 true DE69420998D1 (de) 1999-11-11
DE69420998T2 DE69420998T2 (de) 2000-04-20

Family

ID=14194512

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69420998T Expired - Fee Related DE69420998T2 (de) 1993-04-23 1994-04-11 Optischer Plattenspeicher

Country Status (5)

Country Link
US (1) US5504726A (de)
EP (1) EP0621586B1 (de)
JP (1) JP2826252B2 (de)
KR (1) KR950030104A (de)
DE (1) DE69420998T2 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5777961A (en) * 1994-06-27 1998-07-07 Nec Corporation Astigmatic difference correcting method for optical head and apparatus therefor
JP3465413B2 (ja) * 1995-06-16 2003-11-10 ソニー株式会社 光ディスク駆動装置およびフォーカス制御方法
JP3846925B2 (ja) * 1995-12-22 2006-11-15 パイオニア株式会社 トラッキングエラー信号の波形制御装置
US6233210B1 (en) 1998-10-09 2001-05-15 Lsi Logic Corporation Optical drive error tracking method and apparatus
US6633520B1 (en) * 1999-06-14 2003-10-14 Oak Technology, Inc. Method and apparatus for searching in a disk drive
US7196979B2 (en) * 2001-01-25 2007-03-27 Dphi Acquisitions, Inc. Calibration storage methods for a digital focus and tracking servo system with calibration
US7522480B2 (en) * 2001-01-25 2009-04-21 Dphi Acquisitions, Inc. Digital tracking servo system with multi-track seek with an acceleration clamp
KR100493026B1 (ko) * 2002-09-09 2005-06-07 삼성전자주식회사 전화선 모뎀을 위한 강건한 심벌 타이밍 복구 회로
DE502004007145D1 (de) * 2003-05-16 2008-06-26 Thomson Licensing Verfahren und gerät zur einstellung einer verstärkung zur erzeugung eines focusfehlersignals
JP4323873B2 (ja) * 2003-06-13 2009-09-02 富士通株式会社 入出力インタフェース回路
US7296142B2 (en) * 2003-06-24 2007-11-13 Seagate Technology Llc Multi-tiered retry scheme for reading copies of information from a storage medium
KR100990101B1 (ko) * 2003-10-16 2010-10-29 주식회사 히타치엘지 데이터 스토리지 코리아 포커스 에러신호의 노이즈 제거장치 및 방법
US7286462B2 (en) * 2003-11-17 2007-10-23 Via Technologies, Inc. Method and device for generating a stable power control signal
TWI261226B (en) * 2004-01-20 2006-09-01 Via Tech Inc Apparatus and method of dynamic adjusting the detection window
JP2008507072A (ja) * 2004-07-14 2008-03-06 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 改善されたトラッキングエラー信号のキャリブレーション方法、及びかかる方法を実現するディスクドライブ
KR20070026884A (ko) * 2004-07-14 2007-03-08 코닌클리케 필립스 일렉트로닉스 엔.브이. 트래킹 에러 신호 보정 방법 및 이 방법을 수행하는 디스크드라이브
CN1320536C (zh) * 2004-08-03 2007-06-06 建兴电子科技股份有限公司 决定循轨误差信号补偿值的方法
TWI261240B (en) 2004-08-17 2006-09-01 Via Tech Inc Method for determining data storage quality of optical disc
JP2007080466A (ja) * 2005-09-16 2007-03-29 Toshiba Corp 光ヘッド装置及び光ディスク装置
JP2007102864A (ja) * 2005-09-30 2007-04-19 Toshiba Samsung Storage Technology Corp 光ディスク装置および光ディスク装置のフォーカス制御方法
DE602007010785D1 (de) * 2006-08-04 2011-01-05 Koninkl Philips Electronics Nv Verbessertes fokusoptimierungsprogramm mit suboptimalen sprungeinstellungen bei optischen plattensystemen
US8811132B2 (en) * 2006-10-24 2014-08-19 Mediatek Inc. Method for calibrating a tracking error signal of an optical disk drive
US7839732B2 (en) * 2007-04-14 2010-11-23 Mediatek Inc. System and method for calibrating recording track offset of optical storage device
US7778120B2 (en) * 2007-05-08 2010-08-17 Mediatek Inc. Calibration method for determining servo parameters for accessing an optical disc
US8199620B2 (en) * 2008-08-14 2012-06-12 Mediatek Inc. Method for performing servo defect compensating operation by compensating servo-related signal derived from reading optical medium and related optical disc drive system with DSP
TWI419156B (zh) * 2009-01-09 2013-12-11 Quanta Storage Inc 聚焦誤差訊號對稱校正方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158045A (ja) * 1982-03-16 1983-09-20 Nec Corp 焦点制御修正装置
CA1261467A (en) * 1985-11-28 1989-09-26 Akira Minami Focus servomechanism control system of optical disc system having offset setting means
JP2690996B2 (ja) 1989-02-17 1997-12-17 株式会社日立製作所 履歴依存ヘルプ制御方式
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
US5097458A (en) * 1989-05-29 1992-03-17 Ricoh Company, Ltd. Servo control system for optical disk device
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
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
US5220546A (en) * 1990-09-28 1993-06-15 International Business Machines Corporation Operating optical disk drives including calibrating a tracking error signal
US5164932A (en) * 1990-09-28 1992-11-17 International Business Machines Corporation Acquiring a best focus using a focus signal offset
JPH04265532A (ja) * 1991-02-19 1992-09-21 Oki Electric Ind Co Ltd 光学的情報記録再生装置
JPH04278233A (ja) * 1991-03-07 1992-10-02 Matsushita Electric Ind Co Ltd 光ディスク装置
US5343454A (en) * 1991-11-22 1994-08-30 Matsushita Electric Industrial Co., Ltd. Tracking control apparatus for correcting tracking error signal according to approximate equation of a function of track address
US6259445B1 (en) 1997-07-07 2001-07-10 Informix, Inc. Computer-based documentation and instruction

Also Published As

Publication number Publication date
JP2826252B2 (ja) 1998-11-18
US5504726A (en) 1996-04-02
EP0621586B1 (de) 1999-10-06
DE69420998T2 (de) 2000-04-20
KR950030104A (ko) 1995-11-24
JPH06309681A (ja) 1994-11-04
EP0621586A1 (de) 1994-10-26

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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