DE69411970T2 - Abweichungsmessgerät - Google Patents

Abweichungsmessgerät

Info

Publication number
DE69411970T2
DE69411970T2 DE69411970T DE69411970T DE69411970T2 DE 69411970 T2 DE69411970 T2 DE 69411970T2 DE 69411970 T DE69411970 T DE 69411970T DE 69411970 T DE69411970 T DE 69411970T DE 69411970 T2 DE69411970 T2 DE 69411970T2
Authority
DE
Germany
Prior art keywords
measuring device
deviation measuring
deviation
measuring
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
DE69411970T
Other languages
English (en)
Other versions
DE69411970D1 (de
Inventor
Itaru Tomisaki
Toru Takeda
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
Publication of DE69411970D1 publication Critical patent/DE69411970D1/de
Application granted granted Critical
Publication of DE69411970T2 publication Critical patent/DE69411970T2/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
DE69411970T 1993-03-02 1994-02-24 Abweichungsmessgerät Expired - Fee Related DE69411970T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06624893A JP3198490B2 (ja) 1993-03-02 1993-03-02 偏心量測定装置

Publications (2)

Publication Number Publication Date
DE69411970D1 DE69411970D1 (de) 1998-09-03
DE69411970T2 true DE69411970T2 (de) 1998-12-17

Family

ID=13310383

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69411970T Expired - Fee Related DE69411970T2 (de) 1993-03-02 1994-02-24 Abweichungsmessgerät

Country Status (5)

Country Link
US (1) US5444371A (de)
EP (1) EP0615243B1 (de)
JP (1) JP3198490B2 (de)
KR (1) KR100278755B1 (de)
DE (1) DE69411970T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2965062B2 (ja) 1996-06-10 1999-10-18 富士通株式会社 ディスク装置及びディスク装置のヘッド位置制御方法
JP2000357337A (ja) 1999-06-15 2000-12-26 Toshiba Corp 光ディスク再生装置
US6947243B2 (en) * 2002-05-24 2005-09-20 Hitachi Global Storage Technologies Netherlands B.V. Method and system for time-shift based rotational vibration sensing in disk drives
JP2007172733A (ja) 2005-12-21 2007-07-05 Toshiba Corp ディスク記憶装置及びヘッド位置決め制御方法
JP4279336B1 (ja) 2007-12-20 2009-06-17 株式会社東芝 ディスク記憶装置及びディスク偏心情報の更新方法
US7872829B2 (en) 2007-12-27 2011-01-18 Kabushiki Kaisha Toshiba Method and apparatus for offset control in a disk drive
US9953806B1 (en) * 2015-03-26 2018-04-24 Doug Carson & Associates, Inc. Substrate alignment detection using circumferentially extending timing pattern
US10134624B2 (en) * 2015-03-26 2018-11-20 Doug Carson & Associates, Inc. Substrate alignment detection using circumferentially extending timing pattern
JP7127512B2 (ja) * 2018-11-28 2022-08-30 株式会社Ｊｖｃケンウッド 光ディスク装置及び光ディスク回転位置検出方法
JP2022105860A (ja) 2021-01-05 2022-07-15 株式会社東芝 磁気ディスク装置及びヘッドチェンジ処理方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700244A (en) * 1986-02-14 1987-10-13 Hewlett-Packard Company Process and system for compensating for information shifts on disc storage media
EP0238318B1 (de) * 1986-03-19 1992-03-04 Fujitsu Limited Regelsystem zum Spurzugriff für ein Magnetplattensystem
JPH01211279A (ja) * 1988-02-18 1989-08-24 Fujitsu Ltd オフトラック補正方式
JP2714149B2 (ja) * 1989-06-28 1998-02-16 株式会社日立製作所 デイスク装置
JP2686330B2 (ja) * 1989-11-17 1997-12-08 富士通株式会社 ディスク位置信号のオフセット除去方式
JP2642518B2 (ja) * 1990-12-21 1997-08-20 富士通株式会社 磁気ヘッド位置信号のオフセット補正方式
JP3063230B2 (ja) * 1991-05-31 2000-07-12 ソニー株式会社 書き換え可能なディスクおよびディスク装置

Also Published As

Publication number Publication date
EP0615243A1 (de) 1994-09-14
JPH06259904A (ja) 1994-09-16
KR100278755B1 (ko) 2001-03-02
DE69411970D1 (de) 1998-09-03
JP3198490B2 (ja) 2001-08-13
US5444371A (en) 1995-08-22
KR940022520A (ko) 1994-10-21
EP0615243B1 (de) 1998-07-29

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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