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DE60315934D1 - Verfahren und Vorrichtung zur Einstellung der Fokusvorspannung in einem optischen Plattengerät - Google Patents

Verfahren und Vorrichtung zur Einstellung der Fokusvorspannung in einem optischen Plattengerät

Info

Publication number
DE60315934D1
DE60315934D1 DE60315934T DE60315934T DE60315934D1 DE 60315934 D1 DE60315934 D1 DE 60315934D1 DE 60315934 T DE60315934 T DE 60315934T DE 60315934 T DE60315934 T DE 60315934T DE 60315934 D1 DE60315934 D1 DE 60315934D1
Authority
DE
Germany
Prior art keywords
adjusting
optical disk
disk device
focus bias
bias
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
DE60315934T
Other languages
English (en)
Other versions
DE60315934T2 (de
Inventor
Seong Hwan Seo
Dong Sik Kim
Kyung Soo Kim
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Application granted granted Critical
Publication of DE60315934D1 publication Critical patent/DE60315934D1/de
Publication of DE60315934T2 publication Critical patent/DE60315934T2/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
    • 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
    • G11B7/09—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
DE60315934T 2002-10-10 2003-10-09 Verfahren und Vorrichtung zum Einstellen einer Fokusvorspannung in einer optischen Plattenvorrichtung Expired - Lifetime DE60315934T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020020061904A KR20040032679A (ko) 2002-10-10 2002-10-10 광디스크 장치의 포커스 바이어스 조정방법
KR2002061904 2002-10-10

Publications (2)

Publication Number Publication Date
DE60315934D1 true DE60315934D1 (de) 2007-10-11
DE60315934T2 DE60315934T2 (de) 2008-06-05

Family

ID=32026138

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60315934T Expired - Lifetime DE60315934T2 (de) 2002-10-10 2003-10-09 Verfahren und Vorrichtung zum Einstellen einer Fokusvorspannung in einer optischen Plattenvorrichtung

Country Status (5)

Country Link
US (1) US7212473B2 (de)
EP (1) EP1408487B1 (de)
KR (1) KR20040032679A (de)
CN (1) CN1260717C (de)
DE (1) DE60315934T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1710661A (zh) * 2004-06-16 2005-12-21 皇家飞利浦电子股份有限公司 一种确定光盘读取信号质量的方法及装置
EP1763875A1 (de) * 2004-06-28 2007-03-21 Koninklijke Philips Electronics N.V. Verfahren für erhöhte robustheit beim auslesen einer optischen platte
KR101027402B1 (ko) * 2004-11-16 2011-04-11 주식회사 히타치엘지 데이터 스토리지 코리아 블랭크 디스크에 대한 서보 조정방법
JP4569306B2 (ja) * 2005-02-02 2010-10-27 船井電機株式会社 光ディスク装置及びデフォーカス調整方法
JP2009508278A (ja) * 2005-09-08 2009-02-26 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 ラジアル制御ループを閉じる前のパラメータ変更
KR100767132B1 (ko) 2006-03-23 2007-10-12 엘지전자 주식회사 광디스크장치의 포커스 위치 조정방법
JP4783670B2 (ja) 2006-05-23 2011-09-28 株式会社日立製作所 フォーカス外れ検出装置およびそれを用いた光ディスク装置
KR100867124B1 (ko) * 2007-02-15 2008-11-06 삼성전자주식회사 광디스크의 데이터 기록 및 재생 장치 및 방법
US8184897B2 (en) * 2008-10-02 2012-05-22 Synopsys, Inc. Method and apparatus for determining an optical threshold and a resist bias

Family Cites Families (13)

* 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
JPH0748269B2 (ja) * 1988-09-28 1995-05-24 富士通株式会社 光ディスク装置のフォーカス点位置決め方法
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
JPH08147722A (ja) * 1994-09-19 1996-06-07 Sony Corp フォーカスバイアス手段を備えた光ディスク装置
US5627807A (en) * 1994-09-19 1997-05-06 Abe; Tetsuya Optical disk apparatus with focus bias means
US5612939A (en) * 1995-01-27 1997-03-18 Victor Company Of Japan, Ltd. Optical disk recording and/or reproducing apparatus for performing optimizing operation for servo control with recording and/or reproducing operation
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
JPH11161978A (ja) * 1997-10-31 1999-06-18 Sony Precision Eng Center Singapore Pte Ltd 光学ピックアップ及び／又は光ディスクのフォーカス特性測定装置、光学ピックアップ及び／又は光ディスクのフォーカス特性測定方法、光ディスクの記録及び／又は再生装置、並びに、光ディスクの記録及び／又は再生方法
KR19990050071A (ko) * 1997-12-16 1999-07-05 전주범 포커스 바이어스 조정 장치
JP2000099961A (ja) * 1998-09-28 2000-04-07 Alps Electric Co Ltd 光ディスク装置のフォーカス調整機構
US6963520B1 (en) * 1999-05-18 2005-11-08 Lg Electronics Inc. Method of recording and reproducing an optical recording medium
US6906985B2 (en) * 2001-01-25 2005-06-14 Dphi Acquisitions, Inc. Calibration of tracking error signal gain in a tracking servo system

Also Published As

Publication number Publication date
US20040076092A1 (en) 2004-04-22
EP1408487B1 (de) 2007-08-29
DE60315934T2 (de) 2008-06-05
EP1408487A2 (de) 2004-04-14
CN1260717C (zh) 2006-06-21
KR20040032679A (ko) 2004-04-17
EP1408487A3 (de) 2004-10-27
CN1540642A (zh) 2004-10-27
US7212473B2 (en) 2007-05-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition