JPH11273097A - フォーカスサーボ回路および光ディスク記録再生装置 - Google Patents

フォーカスサーボ回路および光ディスク記録再生装置

Info

Publication number
JPH11273097A
JPH11273097A JP10067493A JP6749398A JPH11273097A JP H11273097 A JPH11273097 A JP H11273097A JP 10067493 A JP10067493 A JP 10067493A JP 6749398 A JP6749398 A JP 6749398A JP H11273097 A JPH11273097 A JP H11273097A
Authority
JP
Japan
Prior art keywords
focus
signal
data
recorded
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.)
Pending
Application number
JP10067493A
Other languages
English (en)
Japanese (ja)
Other versions
JPH11273097A5 (enExample
Inventor
Taizo Takiguchi
泰三 滝口
Yoshimasa Sato
禎昌 佐藤
Kozo Kashima
浩三 加島
Kenji Yamazaki
健二 山崎
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
Priority to JP10067493A priority Critical patent/JPH11273097A/ja
Priority to US09/268,982 priority patent/US6392971B1/en
Publication of JPH11273097A publication Critical patent/JPH11273097A/ja
Publication of JPH11273097A5 publication Critical patent/JPH11273097A5/ja
Pending 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
    • 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
    • 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
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP10067493A 1998-03-17 1998-03-17 フォーカスサーボ回路および光ディスク記録再生装置 Pending JPH11273097A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP10067493A JPH11273097A (ja) 1998-03-17 1998-03-17 フォーカスサーボ回路および光ディスク記録再生装置
US09/268,982 US6392971B1 (en) 1998-03-17 1999-03-16 Focus control method and optical disc recording/reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10067493A JPH11273097A (ja) 1998-03-17 1998-03-17 フォーカスサーボ回路および光ディスク記録再生装置

Publications (2)

Publication Number Publication Date
JPH11273097A true JPH11273097A (ja) 1999-10-08
JPH11273097A5 JPH11273097A5 (enExample) 2005-09-02

Family

ID=13346582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10067493A Pending JPH11273097A (ja) 1998-03-17 1998-03-17 フォーカスサーボ回路および光ディスク記録再生装置

Country Status (2)

Country Link
US (1) US6392971B1 (enExample)
JP (1) JPH11273097A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040037894A (ko) * 2002-10-30 2004-05-08 삼성전자주식회사 광 기록 매체의 자동 기록 최적화 방법 및 이를 수행하는광 기록/재생 장치
KR100617148B1 (ko) 2004-07-01 2006-08-30 엘지전자 주식회사 광 디스크 재생/기록 시스템에서의 포커스 바이어스설정방법

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3915320B2 (ja) * 1999-06-02 2007-05-16 株式会社日立製作所 情報記録装置及び情報記録方法
JP3576137B2 (ja) * 2000-12-20 2004-10-13 株式会社ソニー・コンピュータエンタテインメント 光ディスク装置、光ディスク装置のサーボ調整方法、光ディスクのサーボ調整プログラム、及び光ディスクのサーボ調整プログラムを記録したコンピュータ読み取り可能な記録媒体
US20030147321A1 (en) * 2001-10-30 2003-08-07 Nec Corporation Recording power adjusting method and optical information record apparatus using the same
US20030081518A1 (en) * 2001-10-30 2003-05-01 Nec Corporatin Recording power adjusting method and optical information record apparatus using the same
CN1267913C (zh) * 2001-11-12 2006-08-02 松下电器产业株式会社 光头及盘式记录重放装置
KR20040031533A (ko) * 2002-10-07 2004-04-13 삼성전자주식회사 적응적인 포커싱 방법 및 장치
JP4075069B2 (ja) * 2004-06-02 2008-04-16 船井電機株式会社 光ディスク装置
US20090296548A1 (en) * 2004-12-16 2009-12-03 Koninklijke Philips Electronics, N.V. Method for measuring and optimizing radial to vertical crosstalk
US20060233075A1 (en) * 2005-04-18 2006-10-19 Mediatek Inc. Methods of calibrating servo signal bias for optical disc
JP4676240B2 (ja) * 2005-04-25 2011-04-27 株式会社日立製作所 光ディスク装置、光ディスク装置のフォーカスオフセット及び記録パワー調整方法並びに光ディスク装置のフォーカスオフセット及び記録パワーの調整用プログラム
JP5396420B2 (ja) * 2011-03-24 2014-01-22 株式会社ソニー・コンピュータエンタテインメント 光ディスク装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164932A (en) * 1990-09-28 1992-11-17 International Business Machines Corporation Acquiring a best focus using a focus signal offset
JPH08180429A (ja) * 1994-12-22 1996-07-12 Sharp Corp 光情報記録再生装置及び光記録媒体
JP3510015B2 (ja) * 1995-09-11 2004-03-22 株式会社日立製作所 光ディスク記録再生装置
US5715228A (en) 1995-11-24 1998-02-03 Sony Corporation Optical recording apparatus
US5898656A (en) 1996-08-29 1999-04-27 Sony Corporation Optical disc-shaped recording medium recording device and method for setting illumination power thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040037894A (ko) * 2002-10-30 2004-05-08 삼성전자주식회사 광 기록 매체의 자동 기록 최적화 방법 및 이를 수행하는광 기록/재생 장치
KR100617148B1 (ko) 2004-07-01 2006-08-30 엘지전자 주식회사 광 디스크 재생/기록 시스템에서의 포커스 바이어스설정방법

Also Published As

Publication number Publication date
US6392971B1 (en) 2002-05-21

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