DE3783307D1 - Magneto-optisches informationswiedergabegeraet. - Google Patents

Magneto-optisches informationswiedergabegeraet.

Info

Publication number
DE3783307D1
DE3783307D1 DE8787309126T DE3783307T DE3783307D1 DE 3783307 D1 DE3783307 D1 DE 3783307D1 DE 8787309126 T DE8787309126 T DE 8787309126T DE 3783307 T DE3783307 T DE 3783307T DE 3783307 D1 DE3783307 D1 DE 3783307D1
Authority
DE
Germany
Prior art keywords
magneto
display device
information display
optical information
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.)
Expired - Fee Related
Application number
DE8787309126T
Other languages
English (en)
Other versions
DE3783307T2 (de
Inventor
Osamu Koyama
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
Priority claimed from JP61246616A external-priority patent/JPH07101522B2/ja
Priority claimed from JP24661886A external-priority patent/JPH07101525B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE3783307D1 publication Critical patent/DE3783307D1/de
Publication of DE3783307T2 publication Critical patent/DE3783307T2/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
DE8787309126T 1986-10-17 1987-10-15 Magneto-optisches informationswiedergabegeraet. Expired - Fee Related DE3783307T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61246616A JPH07101522B2 (ja) 1986-10-17 1986-10-17 光磁気情報再生装置
JP24661886A JPH07101525B2 (ja) 1986-10-17 1986-10-17 光磁気情報再生装置

Publications (2)

Publication Number Publication Date
DE3783307D1 true DE3783307D1 (de) 1993-02-11
DE3783307T2 DE3783307T2 (de) 1993-07-22

Family

ID=26537815

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787309126T Expired - Fee Related DE3783307T2 (de) 1986-10-17 1987-10-15 Magneto-optisches informationswiedergabegeraet.

Country Status (3)

Country Link
US (1) US4813032A (de)
EP (1) EP0264284B1 (de)
DE (1) DE3783307T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03102644A (ja) * 1989-09-14 1991-04-30 Canon Inc 光情報処理装置
JP2798185B2 (ja) * 1990-07-26 1998-09-17 キヤノン株式会社 光磁気式情報再生装置用光学ヘッド
EP0475765B1 (de) * 1990-09-13 1996-12-11 Canon Kabushiki Kaisha Optischer Kopf für magnetooptisches Aufzeichnungs-/Wiedergabegerät
JPH04167236A (ja) * 1990-10-31 1992-06-15 Toshiba Corp 光ディスク装置
JPH04301245A (ja) * 1991-03-28 1992-10-23 Canon Inc 光磁気記録再生用光ヘッド
JP3095194B2 (ja) * 1992-02-05 2000-10-03 キヤノン株式会社 光磁気情報再生装置
US5223710A (en) * 1992-03-06 1993-06-29 Digital Equipment Corporation Optical angular position sensing system for use with a galvanometer
US5519675A (en) * 1995-05-17 1996-05-21 Mehrdad Toofan Polarization detector optical head
JP2005149689A (ja) * 2003-10-22 2005-06-09 Nec Corp 光ヘッド装置および光学式情報記録再生装置
JP2005141892A (ja) * 2003-10-16 2005-06-02 Nec Corp 光ヘッド装置および光学式情報記録又は再生装置
JP2005166195A (ja) * 2003-12-04 2005-06-23 Canon Inc 光情報記録再生装置及び光情報記録再生方法
JP2006331471A (ja) * 2005-05-23 2006-12-07 Canon Inc 光情報記録再生装置
US7680013B2 (en) * 2005-11-29 2010-03-16 Canon Kabushiki Kaisha Optical information recording and reproducing apparatus
US7791986B2 (en) * 2006-03-15 2010-09-07 Canon Kabushiki Kaisha Optical information recording/reproducing apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398806A (en) * 1980-10-23 1983-08-16 The Board Of Trustees Of The Leland University Broadband variable optical attenuator
US4561032A (en) * 1981-06-02 1985-12-24 Canon Kabushiki Kaisha Magnetooptic reproducing device
US4558440A (en) * 1982-08-19 1985-12-10 Canon Kabushiki Kaisha System for recording patterns of magnetically recorded information by utilizing the magneto-optic effect
JPS5963040A (ja) * 1982-09-16 1984-04-10 Canon Inc 光磁気情報読取装置
JP2504734B2 (ja) * 1983-11-08 1996-06-05 シャープ株式会社 光磁気記憶装置の光学装置
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
KR920007294B1 (ko) * 1984-06-29 1992-08-29 가부시끼가이샤 히다찌세이사꾸쇼 광자기 정보 기록장치의 광헤드
JPH06113460A (ja) * 1992-09-25 1994-04-22 Toyo Electric Mfg Co Ltd アクティブフィルタの過電流制限法

Also Published As

Publication number Publication date
EP0264284A3 (en) 1989-07-05
US4813032A (en) 1989-03-14
DE3783307T2 (de) 1993-07-22
EP0264284A2 (de) 1988-04-20
EP0264284B1 (de) 1992-12-30

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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