DE68916449T2 - Optisches Informationsberarbeitungsgerät mit einem Verstärkungsregelungssignalspitzenwerterfassungskreis. - Google Patents

Optisches Informationsberarbeitungsgerät mit einem Verstärkungsregelungssignalspitzenwerterfassungskreis.

Info

Publication number
DE68916449T2
DE68916449T2 DE68916449T DE68916449T DE68916449T2 DE 68916449 T2 DE68916449 T2 DE 68916449T2 DE 68916449 T DE68916449 T DE 68916449T DE 68916449 T DE68916449 T DE 68916449T DE 68916449 T2 DE68916449 T2 DE 68916449T2
Authority
DE
Germany
Prior art keywords
control signal
processing apparatus
information processing
detection circuit
gain control
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
DE68916449T
Other languages
English (en)
Other versions
DE68916449D1 (de
Inventor
Hirotake Ando
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE68916449D1 publication Critical patent/DE68916449D1/de
Publication of DE68916449T2 publication Critical patent/DE68916449T2/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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
    • G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
    • 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
DE68916449T 1988-03-02 1989-03-01 Optisches Informationsberarbeitungsgerät mit einem Verstärkungsregelungssignalspitzenwerterfassungskreis. Expired - Lifetime DE68916449T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63047494A JP2625476B2 (ja) 1988-03-02 1988-03-02 光学的記録再生装置

Publications (2)

Publication Number Publication Date
DE68916449D1 DE68916449D1 (de) 1994-08-04
DE68916449T2 true DE68916449T2 (de) 1994-11-10

Family

ID=12776668

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68916449T Expired - Lifetime DE68916449T2 (de) 1988-03-02 1989-03-01 Optisches Informationsberarbeitungsgerät mit einem Verstärkungsregelungssignalspitzenwerterfassungskreis.

Country Status (4)

Country Link
US (1) US5107101A (de)
EP (1) EP0331475B1 (de)
JP (1) JP2625476B2 (de)
DE (1) DE68916449T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03173935A (ja) * 1989-11-30 1991-07-29 Sony Corp 光デイスクのサーボ装置
US5352881A (en) * 1992-05-08 1994-10-04 Olympus Optical Co., Ltd. Focus control device in optical recording and reproducing apparatus having an optical-beam-position judging device
JPH06309679A (ja) * 1993-04-27 1994-11-04 Canon Inc 光学的情報記録再生装置
US5477514A (en) * 1993-09-07 1995-12-19 Matsushita Electric Industrial Co., Ltd. Control apparatus for controlling focusing, accessing and spindle rotating circuits to operate simultaneously
ES2168289T3 (es) * 1993-10-13 2002-06-16 Canon Kk Aparato de disco magneto-optico con microprocesador unico.
US5825729A (en) * 1993-12-15 1998-10-20 Canon Kabushiki Kaisha Information recording and/or reproducing method and apparatus in which a servo process of a light beam is interrupted between input/output control of data at predetermined periods
US5436880A (en) * 1994-01-10 1995-07-25 Eastman Kodak Company Laser power control in an optical recording system using partial correction of reflected signal error
JP4109919B2 (ja) * 2002-07-19 2008-07-02 キヤノン株式会社 光学的情報再生装置
US20050180276A1 (en) * 2004-02-17 2005-08-18 Canon Kabushiki Kaisha Optical information recording and reproducing apparatus
US20060285453A1 (en) * 2005-06-20 2006-12-21 Chung-Jen Kuo Method and apparatus for stablizing servo closed-loop gain, pll clock and servo signal through setting appropriate gain value to servo closed-loop gain and holding pll clock and servo signal when power of pick-up head changes
JP2007184039A (ja) * 2006-01-06 2007-07-19 Canon Inc 情報記録装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079247A (en) * 1975-05-16 1978-03-14 Claude Bricot Optical focussing device
JPS5690434A (en) * 1979-12-19 1981-07-22 Hitachi Ltd Optical information reproducing device
EP0095766B1 (de) * 1982-05-31 1986-10-22 Hitachi, Ltd. Servoschaltung für ein Gerät zur Wiedergabe von Signalen
JPS59116939A (ja) * 1982-12-23 1984-07-06 Olympus Optical Co Ltd 光学式記録再生装置
JPS59116942A (ja) * 1982-12-23 1984-07-06 Olympus Optical Co Ltd オ−トフォ−カス装置
JPS6022745A (ja) * 1983-07-15 1985-02-05 Fujitsu Ltd サ−ボゲインの自動補償回路
JPS6166232A (ja) * 1984-09-07 1986-04-05 Matsushita Electric Ind Co Ltd 光学式記録再生装置のサ−ボ信号検出装置
JPS61117737A (ja) * 1984-11-13 1986-06-05 Pioneer Electronic Corp フオ−カスサ−ボ装置
JPS61188745A (ja) * 1985-02-15 1986-08-22 Olympus Optical Co Ltd フオ−カスサ−ボ制御方式
US4701603A (en) * 1985-10-17 1987-10-20 Optical Disc Corporation Focus control system for optical information recorder or player
JPH0719455B2 (ja) * 1986-05-13 1995-03-06 パイオニア株式会社 トラツキング制御装置
US4878211A (en) * 1986-05-26 1989-10-31 Pioneer Electronic Corporation Method and apparatus for correcting the loop gain of a servo loop in accordance with measurements during open-loop operation
JPS62277636A (ja) * 1986-05-27 1987-12-02 Pioneer Electronic Corp フオ−カスエラ−信号の信号レベル補正方法及びその装置

Also Published As

Publication number Publication date
EP0331475A2 (de) 1989-09-06
JP2625476B2 (ja) 1997-07-02
EP0331475B1 (de) 1994-06-29
JPH01223640A (ja) 1989-09-06
EP0331475A3 (de) 1991-11-06
US5107101A (en) 1992-04-21
DE68916449D1 (de) 1994-08-04

Similar Documents

Publication Publication Date Title
DE68920005T2 (de) Signalverarbeitungseinrichtung.
DE3878822T2 (de) Signalerkennungseinrichtung mit hoher impedanz.
DE68925023D1 (de) Videosignalverarbeitungsgerät.
DE68916449T2 (de) Optisches Informationsberarbeitungsgerät mit einem Verstärkungsregelungssignalspitzenwerterfassungskreis.
DE68922829D1 (de) Bildsignalverarbeitungsvorrichtung.
DE68923518T2 (de) Farbvideosignalverarbeitungsvorrichtung.
DE3860705D1 (de) Erkennungsschaltung fuer binaersignalzustandswechsel.
DE58909423D1 (de) Messwertgeber-Fehlererkennungsschaltung.
ES505821A0 (es) Perfeccionamientos en una senal de tratamiento de datos
DE68912149D1 (de) Optisches Informationsverarbeitungsgerät.
DE3674418D1 (de) Signalerkennungsschaltung.
DE68909171T2 (de) Farbsignalverarbeitungseinrichtung.
DE68914615D1 (de) Fokusfehlerermittlungsschaltung.
DE3852718D1 (de) Signalerkennungsschaltung.
DE68906908D1 (de) Signalverarbeitungsschaltung und -verfahren.
DE69225121D1 (de) Informationssignalverarbeitungsapparat
DE68915565T2 (de) Optisches Informationsverarbeitungsgerät.
DE68921800D1 (de) Videosignalverarbeitungsgerät.
DE68923150T2 (de) Signalunterscheidungsschaltung.
DE68918786T2 (de) Spurfolgefehler-Detektionsschaltung.
DE68909841D1 (de) Videosignalverarbeitungsschaltung.
DE68915955D1 (de) Bildsignalverarbeitungseinrichtung.
DE3677117D1 (de) Bildsignalverarbeitungsschaltung.
DE68913151T2 (de) Signalprozessor mit einem supergitter minimaler komplexität.
KR890007954U (ko) 문자 다중 방송 신호 검출 제어회로

Legal Events

Date Code Title Description
8364 No opposition during term of opposition