DE3641587C2 - - Google Patents

Info

Publication number
DE3641587C2
DE3641587C2 DE19863641587 DE3641587A DE3641587C2 DE 3641587 C2 DE3641587 C2 DE 3641587C2 DE 19863641587 DE19863641587 DE 19863641587 DE 3641587 A DE3641587 A DE 3641587A DE 3641587 C2 DE3641587 C2 DE 3641587C2
Authority
DE
Germany
Prior art keywords
error signal
tracking error
track
gain
frequency
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
DE19863641587
Other languages
German (de)
English (en)
Other versions
DE3641587A1 (de
Inventor
Toshiaki Kokubunji Jp Tsuyoshi
Masatoshi Ome Jp Ohtake
Seiji Hachioji Jp Yonezawa
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3641587A1 publication Critical patent/DE3641587A1/de
Application granted granted Critical
Publication of DE3641587C2 publication Critical patent/DE3641587C2/de
Granted 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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
    • 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
    • G11B7/0901—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 for track following only
    • G11B7/0904—Dithered tracking systems
    • 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
    • G11B7/0938—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 servo format, e.g. guide tracks, pilot signals

Landscapes

  • Optical Recording Or Reproduction (AREA)
DE19863641587 1985-12-06 1986-12-05 Verfahren und vorrichtung fuer zusammengesetzte wobblespur-servoanordnung Granted DE3641587A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27322885A JPH06103539B2 (ja) 1985-12-06 1985-12-06 光デイスクトラツキング装置

Publications (2)

Publication Number Publication Date
DE3641587A1 DE3641587A1 (de) 1987-06-11
DE3641587C2 true DE3641587C2 (xx) 1990-12-13

Family

ID=17524900

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863641587 Granted DE3641587A1 (de) 1985-12-06 1986-12-05 Verfahren und vorrichtung fuer zusammengesetzte wobblespur-servoanordnung

Country Status (2)

Country Link
JP (1) JPH06103539B2 (xx)
DE (1) DE3641587A1 (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2889236B2 (ja) * 1987-06-24 1999-05-10 ソニー株式会社 光ディスク装置におけるトラッキングサーボ方式
JP2645025B2 (ja) * 1987-09-04 1997-08-25 株式会社日立製作所 光記録再生方法
JPH0721879B2 (ja) * 1987-11-07 1995-03-08 株式会社日立製作所 光ディスク用レプリカ基盤，スタンパまたは原盤
EP0527539B1 (en) * 1987-11-18 1998-03-11 Sharp Kabushiki Kaisha An optical memory medium
NL8800151A (nl) * 1988-01-22 1989-08-16 Philips Nv Werkwijze en inrichting voor het optekenen van een informatiesignaal.
JPH03100931A (ja) * 1989-09-14 1991-04-25 Mitsubishi Electric Corp 光学式情報記録再生装置
JP2593229B2 (ja) * 1990-02-16 1997-03-26 キヤノン株式会社 光ディスク装置
US5247502A (en) * 1990-02-16 1993-09-21 Canon Kabushiki Kaisha Optical information recording and/or reproducing apparatus and method for sampling an irradiation state error signal
CN1282180C (zh) * 2000-06-22 2006-10-25 松下电器产业株式会社 光盘记录媒体
CN1235205C (zh) * 2000-06-26 2006-01-04 松下电器产业株式会社 光学头

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415727B2 (xx) * 1973-02-02 1979-06-16
US4748609A (en) * 1985-03-29 1988-05-31 Hitachi, Ltd. Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset

Also Published As

Publication number Publication date
JPH06103539B2 (ja) 1994-12-14
DE3641587A1 (de) 1987-06-11
JPS62134830A (ja) 1987-06-17

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee