JPS5257803A - Optical reader - Google Patents

Optical reader

Info

Publication number
JPS5257803A
JPS5257803A JP51131557A JP13155776A JPS5257803A JP S5257803 A JPS5257803 A JP S5257803A JP 51131557 A JP51131557 A JP 51131557A JP 13155776 A JP13155776 A JP 13155776A JP S5257803 A JPS5257803 A JP S5257803A
Authority
JP
Japan
Prior art keywords
optical reader
reader
optical
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.)
Granted
Application number
JP51131557A
Other languages
English (en)
Other versions
JPS5838855B2 (ja
Inventor
Ruure Jieraaru
Bieeru Borutouuzo Jiyan
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of JPS5257803A publication Critical patent/JPS5257803A/ja
Publication of JPS5838855B2 publication Critical patent/JPS5838855B2/ja
Expired 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • 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
    • G11B7/0857—Arrangements for mechanically moving the whole head

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
JP51131557A 1975-10-31 1976-11-01 光学的読取装置 Expired JPS5838855B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7533465A FR2330062A1 (fr) 1975-10-31 1975-10-31 Dispositif de recherche de focalisation et lecteur optique comportant un tel dispositif

Publications (2)

Publication Number Publication Date
JPS5257803A true JPS5257803A (en) 1977-05-12
JPS5838855B2 JPS5838855B2 (ja) 1983-08-25

Family

ID=9161915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51131557A Expired JPS5838855B2 (ja) 1975-10-31 1976-11-01 光学的読取装置

Country Status (6)

Country Link
US (1) US4128847A (ja)
JP (1) JPS5838855B2 (ja)
CA (1) CA1073254A (ja)
DE (1) DE2649688C2 (ja)
FR (1) FR2330062A1 (ja)
GB (1) GB1561541A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120239A (en) * 1981-01-17 1982-07-27 Sharp Corp Focus servomechanism of optical information reader
JPS59186147A (ja) * 1983-04-07 1984-10-22 Mitsubishi Electric Corp 光学式デイスクプレ−ヤ
WO1987002174A1 (en) * 1981-10-08 1987-04-09 Uemura Masaru Automatic focus tripping device
JPH0310311U (ja) * 1990-03-15 1991-01-31
JPH0329118A (ja) * 1978-03-27 1991-02-07 Discovision Assoc 焦点サーボ装置
JPH03173972A (ja) * 1978-11-16 1991-07-29 Discovision Assoc ディスク再生装置

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290132A (en) * 1977-05-11 1981-09-15 Pioneer Electronic Corporation Focus servo device for use in an optical information read-out device
US4439848A (en) * 1978-03-27 1984-03-27 Discovision Associates Focusing system for video disc player
JPS6038771B2 (ja) * 1978-06-19 1985-09-03 パイオニア株式会社 光学式情報読取装置のサ−ボ装置
US4374323A (en) * 1978-06-30 1983-02-15 Discovision Associates Focusing apparatus for use in a system for recovering information from an optically-readable storage medium
JPS5538639A (en) * 1978-09-07 1980-03-18 Pioneer Video Corp Servo drawing-in unit for focus lens of optical information reader
US4383757A (en) * 1979-04-02 1983-05-17 Optimetrix Corporation Optical focusing system
US4540278A (en) * 1979-04-02 1985-09-10 Optimetrix Corporation Optical focusing system
JPS6030015B2 (ja) * 1979-05-09 1985-07-13 株式会社日立製作所 光ビ−ム位置制御装置
FR2458126A1 (fr) * 1979-05-31 1980-12-26 Thomson Brandt Systeme de commande de changement de face lue pour un lecteur optique de support d'information et lecteur optique comportant un tel systeme
JPS5694528A (en) * 1979-12-28 1981-07-31 Matsushita Electric Ind Co Ltd Drawing-in method of focus servo
US4307294A (en) * 1980-03-04 1981-12-22 Campbell Duncan B Electro-mechanical control means for space communication receiver
DE3019239A1 (de) * 1980-05-20 1981-11-26 SIEMENS AG AAAAA, 1000 Berlin und 8000 München Umhuellung fuer halbleiterbauelement
NL8003729A (nl) * 1980-06-27 1982-01-18 Philips Nv Inrichting voor optische scherpstelling.
JPS5885940A (ja) * 1981-11-17 1983-05-23 Hitachi Ltd 光デイスクの自動焦点引込み方法
JPS58101330U (ja) * 1981-12-25 1983-07-09 パイオニア株式会社 光学装置におけるフオ−カスサ−ボ引込装置
US4446546A (en) * 1981-12-31 1984-05-01 Magnetic Peripherals Inc. Focus initialization system for optical recording
JPS58121137A (ja) * 1982-01-09 1983-07-19 Sony Corp 光学式デイスク再生装置のフオ−カス引込み回路
JPS58155527A (ja) * 1982-03-10 1983-09-16 Hitachi Ltd 光デイスクプレ−ヤのフオ−カス引き込み回路
US4674076A (en) * 1982-05-19 1987-06-16 Burroughs Corporation Optical memory system having improved positioning and focusing control circuitry
DE3368794D1 (en) * 1982-05-19 1987-02-05 Burroughs Corp Optical memory system having improved positioning and focusing control circuitry
US4669074A (en) * 1982-05-19 1987-05-26 Burroughs Corporation Focusing control circuitry for an optical memory system
EP0095852A1 (en) * 1982-05-19 1983-12-07 BURROUGHS CORPORATION (a Michigan corporation) Focusing control circuitry for an optical memory system
JPS6077023U (ja) * 1983-11-01 1985-05-29 パイオニア株式会社 記録情報読取装置のフオ−カスレンズ移動制御装置
JPS60123763U (ja) * 1984-01-30 1985-08-21 パイオニア株式会社 記録情報再生装置
JPS61188745A (ja) * 1985-02-15 1986-08-22 Olympus Optical Co Ltd フオ−カスサ−ボ制御方式
DE3508525A1 (de) * 1985-03-09 1986-09-11 Thomson Brandt Gmbh Fokus-such-einrichtung fuer beruehrungslose abtastung
DE3683634D1 (de) * 1985-09-10 1992-03-05 Mitsubishi Electric Corp Anordnung mit optischem kopf.
DE3536700C3 (de) * 1985-10-15 1994-07-07 Focus Mestechnik Gmbh & Co Kg Gerät zum Ermitteln des lokalen Abstandes einer Prüffläche von einer Referenzfläche, deren geometrische Lage in bezug auf das Gerät bekannt ist
US4760269A (en) * 1986-05-20 1988-07-26 The Mitre Corporation Method and apparatus for measuring distance to an object
JPH01116926A (ja) * 1987-10-29 1989-05-09 Csk Corp 光メモリカードの書込装置
US4832575A (en) * 1988-01-11 1989-05-23 Spectra Physics Automatic test system for check valve closure in pump for liquid chromatography system
NL8803012A (nl) * 1988-12-08 1990-07-02 Philips Nv Optische aftastinrichting voorzien van een focusseerregelsysteem alsmede een geintegreerde schakeling voor toepassing in het focusseerregelsysteem.
WO2007069540A1 (ja) * 2005-12-15 2007-06-21 Pioneer Corporation 対物レンズ駆動装置および駆動方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216077C3 (de) * 1972-04-01 1978-04-20 Loewe Opta Gmbh, 1000 Berlin Automatische Spurabtast-Regelschaltung für Video-Magnetband-Aufzeichnungsund Wiedergabegerät
FR2222665B1 (ja) * 1973-03-21 1975-10-31 Thomson Brandt
FR2251876B1 (ja) * 1973-11-16 1977-09-23 Thomson Brandt
US3932700A (en) * 1974-02-04 1976-01-13 Zenith Radio Corporation Focus tracking registration for optical reproducing systems
US3918071A (en) * 1974-04-11 1975-11-04 Fritz Albrecht Automatic lens focusing method and apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0329118A (ja) * 1978-03-27 1991-02-07 Discovision Assoc 焦点サーボ装置
JPH0434208B2 (ja) * 1978-03-27 1992-06-05 Discovision Ass
JPH03173972A (ja) * 1978-11-16 1991-07-29 Discovision Assoc ディスク再生装置
JPH0444341B2 (ja) * 1978-11-16 1992-07-21 Discovision Ass
JPS57120239A (en) * 1981-01-17 1982-07-27 Sharp Corp Focus servomechanism of optical information reader
WO1987002174A1 (en) * 1981-10-08 1987-04-09 Uemura Masaru Automatic focus tripping device
JPS59186147A (ja) * 1983-04-07 1984-10-22 Mitsubishi Electric Corp 光学式デイスクプレ−ヤ
JPH0310311U (ja) * 1990-03-15 1991-01-31

Also Published As

Publication number Publication date
GB1561541A (en) 1980-02-20
FR2330062A1 (fr) 1977-05-27
DE2649688C2 (de) 1984-04-05
JPS5838855B2 (ja) 1983-08-25
DE2649688A1 (de) 1977-05-05
CA1073254A (en) 1980-03-11
US4128847A (en) 1978-12-05
FR2330062B1 (ja) 1979-07-06

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