JPS6244330B2 - - Google Patents

Info

Publication number
JPS6244330B2
JPS6244330B2 JP55188178A JP18817880A JPS6244330B2 JP S6244330 B2 JPS6244330 B2 JP S6244330B2 JP 55188178 A JP55188178 A JP 55188178A JP 18817880 A JP18817880 A JP 18817880A JP S6244330 B2 JPS6244330 B2 JP S6244330B2
Authority
JP
Japan
Prior art keywords
error signal
gain
level
focus servo
predetermined level
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
Application number
JP55188178A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57113428A (en
Inventor
Toshihiko Hosaka
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.)
PAIONIA BIDEO KK
PAIONIA KK
Original Assignee
PAIONIA BIDEO KK
PAIONIA KK
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 PAIONIA BIDEO KK, PAIONIA KK filed Critical PAIONIA BIDEO KK
Priority to JP55188178A priority Critical patent/JPS57113428A/ja
Priority to US06/333,390 priority patent/US4475182A/en
Priority to GB8138973A priority patent/GB2090437B/en
Priority to DE3151834A priority patent/DE3151834C2/de
Publication of JPS57113428A publication Critical patent/JPS57113428A/ja
Publication of JPS6244330B2 publication Critical patent/JPS6244330B2/ja
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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • 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
    • G11B7/0908—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 focusing only
    • G11B7/0909—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 focusing only by astigmatic methods

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP55188178A 1980-12-29 1980-12-29 Focus servo device Granted JPS57113428A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55188178A JPS57113428A (en) 1980-12-29 1980-12-29 Focus servo device
US06/333,390 US4475182A (en) 1980-12-29 1981-12-22 Focus servo control system for automatically adjusting a relative distance between an objective lens unit and a recording surface of an optical recording medium
GB8138973A GB2090437B (en) 1980-12-29 1981-12-24 Focus servo device in an optical pickup system
DE3151834A DE3151834C2 (de) 1980-12-29 1981-12-29 Servofokusvorrichtung für ein optisches Abnehmersystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55188178A JPS57113428A (en) 1980-12-29 1980-12-29 Focus servo device

Publications (2)

Publication Number Publication Date
JPS57113428A JPS57113428A (en) 1982-07-14
JPS6244330B2 true JPS6244330B2 (US06277897-20010821-C00009.png) 1987-09-19

Family

ID=16219125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55188178A Granted JPS57113428A (en) 1980-12-29 1980-12-29 Focus servo device

Country Status (4)

Country Link
US (1) US4475182A (US06277897-20010821-C00009.png)
JP (1) JPS57113428A (US06277897-20010821-C00009.png)
DE (1) DE3151834C2 (US06277897-20010821-C00009.png)
GB (1) GB2090437B (US06277897-20010821-C00009.png)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57186239A (en) * 1981-05-11 1982-11-16 Sony Corp Disc reproducing device
JPS58128031A (ja) * 1982-01-24 1983-07-30 Sony Corp デイスク再生装置
JPS58200473A (ja) * 1982-05-19 1983-11-22 Pioneer Video Kk 情報読取装置
EP0095766B1 (en) * 1982-05-31 1986-10-22 Hitachi, Ltd. Servo circuit for a signal reproducing apparatus
JPH0677326B2 (ja) * 1982-07-24 1994-09-28 パイオニア株式会社 情報読取装置のフォ−カスサ−ボ装置
JPS5938936A (ja) * 1982-08-28 1984-03-03 Sony Corp 情報再生装置のサ−ボコントロ−ル回路
CA1212764A (en) * 1982-11-11 1986-10-14 Sony Corporation Tracking servocontrol circuits for use in an optical reproducing apparatus
EP0116753B1 (en) * 1982-12-07 1987-06-24 Secretary of State for Trade and Industry in Her Britannic Majesty's Gov. of the U.K. of Great Britain and Northern Ireland Improvements in or relating to apparatus to focus light on a surface
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
JPS6074129A (ja) * 1983-09-30 1985-04-26 Sony Corp 光学式デイスクのトラツキングサ−ボ回路
JPS6095733A (ja) * 1983-10-31 1985-05-29 Hitachi Ltd 光学的信号処理装置
JPH0734287B2 (ja) * 1984-05-08 1995-04-12 ソニー株式会社 光学式ディスク装置の起動制御方法
EP0165324B1 (de) * 1984-06-18 1988-05-25 DR.-ING. RUDOLF HELL GmbH Verfahren und Einrichtung zur akustischen Kontrolle von Justiervorgängen an optischen Vorrichtungen
DE3473649D1 (en) * 1984-06-18 1988-09-29 Hell Rudolf Dr Ing Gmbh Method and appliance for the acoustic control of the adjustment of optical devices
ATE36608T1 (de) * 1984-06-18 1988-09-15 Hell Rudolf Dr Ing Gmbh Verfahren und einrichtung zur akustischen kontrolle von justiervorgaengen an optischen vorrichtungen.
JP2565485B2 (ja) * 1984-09-14 1996-12-18 オリンパス光学工業株式会社 光学的記録再生装置
JPS61117737A (ja) * 1984-11-13 1986-06-05 Pioneer Electronic Corp フオ−カスサ−ボ装置
US4689779A (en) * 1984-12-19 1987-08-25 Kabushiki Kaisha Toshiba Tracking control system for optical record disc information reproducing apparatus
NL8500059A (nl) * 1985-01-11 1986-08-01 Philips Nv Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager.
JPS61177642A (ja) * 1985-01-31 1986-08-09 Olympus Optical Co Ltd 光学的情報記録再生装置
US4899327A (en) * 1985-02-04 1990-02-06 International Business Machines Corporation Focus servo loop correction
JPS61177647A (ja) * 1985-02-04 1986-08-09 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション 情報記憶装置
DE3503983A1 (de) * 1985-02-06 1986-08-07 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Fokus-regelung fuer ein geraet fuer plattenfoermige, rotierende informationstraeger
JPH0736233B2 (ja) * 1985-04-16 1995-04-19 オリンパス光学工業株式会社 光学的情報記録再生装置
JPS61264521A (ja) * 1985-05-20 1986-11-22 Hitachi Ltd 光学式読取再生装置
US4764860A (en) * 1985-06-26 1988-08-16 Nippon Gakki Seizo Kabushiki Kaisha Servo circuit for an information recording and/or reproducing apparatus
US4701603A (en) * 1985-10-17 1987-10-20 Optical Disc Corporation Focus control system for optical information recorder or player
JPH056575Y2 (US06277897-20010821-C00009.png) * 1986-04-18 1993-02-19
US4695722A (en) * 1986-04-25 1987-09-22 Ford Aerospace & Communications Corporation Optical scanner error compensator
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
JPS63228421A (ja) * 1987-03-17 1988-09-22 Minolta Camera Co Ltd 自動合焦装置
JPH0777048B2 (ja) * 1987-06-26 1995-08-16 三菱電機株式会社 記録媒体駆動装置
US4972075A (en) * 1988-08-02 1990-11-20 Minolta Camera Kabushiki Kaisha Automatic focusing system with dual diffraction gratings and converging means
US5062094A (en) * 1988-11-07 1991-10-29 Minolta Camera Kabushiki Kaisha Optical head for optical disk system
US5166916A (en) * 1988-12-14 1992-11-24 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic gain control apparatus
JPH03263620A (ja) * 1990-03-13 1991-11-25 Pioneer Electron Corp ディスクプレーヤのサーボ装置
JPH0827962B2 (ja) * 1990-06-27 1996-03-21 パイオニア株式会社 光ピックアップ
US5245174A (en) * 1990-10-15 1993-09-14 Applied Magnetics Corporation Focus sensing apparatus utilizing a reflecting surface having variable reflectivity
GB2248989B (en) * 1990-10-15 1995-05-24 Applied Magnetics Corp Focus sensing apparatus and method
US5347502A (en) * 1991-11-08 1994-09-13 Matsushita Electric Industrial Co., Ltd. Focusing control system for use in an information recording and reproducing apparatus
KR100230228B1 (ko) * 1993-07-31 1999-11-15 윤종용 광디스크 시스템의 포커싱 제어장치
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
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
JP3553241B2 (ja) * 1995-11-24 2004-08-11 シャープ株式会社 光ディスク装置
DE19640870A1 (de) * 1996-10-04 1998-04-09 Thomson Brandt Gmbh Aufzeichnungs- oder Wiedergabegerät für optische Informationsträger mit einem Servo-Regelkreis und Verfahren zur Fehlersignalbehandlung in einem solchen
US5897798A (en) * 1997-06-04 1999-04-27 Hmt Technology Corporation Laser texturing apparatus employing a rotating mirror
JP2005203057A (ja) * 2004-01-19 2005-07-28 Funai Electric Co Ltd 光ディスク記録再生装置
DE602005004532T2 (de) * 2004-05-04 2009-01-22 Koninklijke Philips Electronics N.V. Schienenreibungs-kalibration
KR100604014B1 (ko) 2004-06-21 2006-07-24 엘지전자 주식회사 홀로그래픽 데이터 저장 시스템
US7869022B2 (en) * 2007-07-18 2011-01-11 Asml Netherlands B.V. Inspection method and apparatus lithographic apparatus, lithographic processing cell, device manufacturing method and distance measuring system
KR101286634B1 (ko) * 2012-01-13 2013-07-22 도시바삼성스토리지테크놀러지코리아 주식회사 광 검출 소자 및 이를 적용하는 광 픽업 장치 및 광 디스크 드라이브

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7315419A (nl) * 1973-11-10 1975-05-13 Philips Nv Inrichting voor het uitlezen van een schijfvor- mige registratiedrager.
NL7401805A (nl) * 1974-02-09 1975-08-12 Philips Nv Inrichting voor het instellen van het beeld en informatiestruktuur op een omzetter.
NL182257C (nl) * 1974-12-23 1988-02-01 Philips Nv Inrichting voor het uitlezen van een vlakke reflekterende registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur.
JPS5538369A (en) * 1978-09-01 1980-03-17 Texaco Development Corp Manufacture of carboxylic acids and their esters
JPS5538639A (en) * 1978-09-07 1980-03-18 Pioneer Video Corp Servo drawing-in unit for focus lens of optical information reader
JPS5694528A (en) * 1979-12-28 1981-07-31 Matsushita Electric Ind Co Ltd Drawing-in method of focus servo

Also Published As

Publication number Publication date
DE3151834C2 (de) 1985-03-07
GB2090437A (en) 1982-07-07
JPS57113428A (en) 1982-07-14
GB2090437B (en) 1984-09-26
US4475182A (en) 1984-10-02
DE3151834A1 (de) 1982-08-12

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