FR2590065B1 - Appareil d'enregistrement magneto-optique d'informations - Google Patents

Appareil d'enregistrement magneto-optique d'informations

Info

Publication number
FR2590065B1
FR2590065B1 FR8612783A FR8612783A FR2590065B1 FR 2590065 B1 FR2590065 B1 FR 2590065B1 FR 8612783 A FR8612783 A FR 8612783A FR 8612783 A FR8612783 A FR 8612783A FR 2590065 B1 FR2590065 B1 FR 2590065B1
Authority
FR
France
Prior art keywords
magneto
information recording
recording apparatus
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
FR8612783A
Other languages
English (en)
Other versions
FR2590065A1 (fr
Inventor
Miyajima Yoshikazu
Shimo Makoto
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 JP60201781A external-priority patent/JPH073709B2/ja
Priority claimed from JP20053286A external-priority patent/JP2578411B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of FR2590065A1 publication Critical patent/FR2590065A1/fr
Application granted granted Critical
Publication of FR2590065B1 publication Critical patent/FR2590065B1/fr
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
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR8612783A 1985-09-13 1986-09-12 Appareil d'enregistrement magneto-optique d'informations Expired - Fee Related FR2590065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60201781A JPH073709B2 (ja) 1985-09-13 1985-09-13 光磁気情報装置
JP20053286A JP2578411B2 (ja) 1986-08-27 1986-08-27 光磁気情報記録装置

Publications (2)

Publication Number Publication Date
FR2590065A1 FR2590065A1 (fr) 1987-05-15
FR2590065B1 true FR2590065B1 (fr) 1995-01-06

Family

ID=26512248

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8612783A Expired - Fee Related FR2590065B1 (fr) 1985-09-13 1986-09-12 Appareil d'enregistrement magneto-optique d'informations

Country Status (4)

Country Link
US (1) US4843600A (fr)
DE (1) DE3630691A1 (fr)
FR (1) FR2590065B1 (fr)
GB (1) GB2181879B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0643854Y2 (ja) * 1988-01-25 1994-11-14 パイオニア株式会社 光磁気ディスク装置
GB2216710B (en) * 1988-03-14 1992-09-02 Ici Plc Optical or magneto-optical data system
US5101385A (en) * 1988-03-14 1992-03-31 Bernoulli Optical Systems Company Magneto-optical information storage system for flexible media having maximum overwrite efficiency
JPH02308403A (ja) * 1989-05-23 1990-12-21 Sony Corp 光磁気デイスク装置
US5070487A (en) * 1990-01-31 1991-12-03 General Electric Company Magneto-optic media recording system including a directed magnetic bias flux
JP2784829B2 (ja) * 1990-02-06 1998-08-06 ソニー株式会社 記録信号磁界発生装置
NL9001546A (nl) * 1990-07-06 1992-02-03 Philips Nv Inrichting voor het inschrijven en/of uitlezen van een magneto-optische informatiedrager.
JPH04356748A (ja) * 1991-06-03 1992-12-10 Sony Corp 光磁気記録装置
US5260921A (en) * 1991-10-01 1993-11-09 Tdk Corporation Magnetooptical recording method
JP2813261B2 (ja) * 1992-02-14 1998-10-22 シャープ株式会社 光磁気ディスク用磁気ヘッド装置及び光磁気記録再生装置
JP3153947B2 (ja) * 1993-04-28 2001-04-09 ソニー株式会社 磁気ヘッド及び光磁気記録装置
JP3269966B2 (ja) * 1996-04-22 2002-04-02 株式会社三協精機製作所 光ピックアップの対物レンズ駆動装置及びそのレンズホルダの共振周波数の調整方法
WO2001095321A1 (fr) * 2000-06-09 2001-12-13 Sanyo Electric Co., Ltd. Appareil de disque magneto-optique de reproduction parallement a l'agrandissement de domaines magnetiques au moyen de champ magnetique cc, procede de reproduction, et procede d'enregistrement/de reproduction

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651504A (en) * 1969-10-17 1972-03-21 Sperry Rand Corp Magneto-optic information storage apparatus
US3778791A (en) * 1971-10-06 1973-12-11 Nasa Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control
US3775570A (en) * 1972-02-25 1973-11-27 California Inst Of Techn Magneto-optic detection system with noise cancellation
JPS54146612A (en) * 1978-05-10 1979-11-16 Olympus Optical Co Ltd Optical information read device
JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device
JPS5715203A (en) * 1980-06-28 1982-01-26 Sharp Corp Photomagnetic recording and reproducing device
JPS5794906A (en) * 1980-12-05 1982-06-12 Ricoh Co Ltd Optical magnetic recorder
DE3278703D1 (en) * 1981-03-26 1988-07-28 Sony Corp Thermomagnetic recording methods
JPS57179907A (en) * 1981-04-30 1982-11-05 Canon Inc Vertical magnetic recorder
CA1208361A (fr) * 1983-01-25 1986-07-22 Yoshikazu Fujii Commande de positionnement du foyer dans un appareil a disque optique
JPS59148159A (ja) * 1983-02-15 1984-08-24 Canon Inc 光ピツクアツプ装置
JPS59172175A (ja) * 1983-03-22 1984-09-28 Ricoh Co Ltd 光磁気記録再生装置
US4610009A (en) * 1983-05-23 1986-09-02 Xerox Corporation Writing, erasing and readout system for a magneto-optic recording medium
JPS6029904A (ja) * 1983-07-28 1985-02-15 Seiko Instr & Electronics Ltd 光磁気記録用ヘッド
JPH065585B2 (ja) * 1984-02-15 1994-01-19 株式会社日立製作所 光磁気記憶装置
JPS60214438A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
JPS60214439A (ja) * 1984-04-11 1985-10-26 Seiko Epson Corp 光磁気ヘツド
JPS6132244A (ja) * 1984-07-24 1986-02-14 Nec Corp 光磁気記録装置
JPH0629904A (ja) * 1992-03-24 1994-02-04 Nec Corp 無線選択呼出受信機
JPH06132244A (ja) * 1992-10-15 1994-05-13 Nippondenso Co Ltd 半導体装置の電極形成方法

Also Published As

Publication number Publication date
FR2590065A1 (fr) 1987-05-15
US4843600A (en) 1989-06-27
GB2181879A (en) 1987-04-29
GB2181879B (en) 1989-10-25
DE3630691A1 (de) 1987-03-26
GB8622064D0 (en) 1986-10-22
DE3630691C2 (fr) 1989-09-21

Similar Documents

Publication Publication Date Title
FR2558002B1 (fr) Appareil enregistreur et reproducteur d'informations
FR2569038B1 (fr) Appareil d'enregistrement et de reproduction d'informations
FR2619640B1 (fr) Appareil de classement d'informations
FR2613856B1 (fr) Systeme d'enregistrement d'informations
EP0194640A3 (en) Information recording and reproducing apparatus
BE895343A (fr) Appareil d'enregistrement magnetique
FR2649527B1 (fr) Disque d'enregistrement d'informations
EP0203562A3 (en) An information recording and reproducing apparatus
FR2565757B1 (fr) Appareil d'emission et de reproduction de signaux
FR2529701B1 (fr) Cassette pour disque d'enregistrement et de lecture d'informations
FR2533345B1 (fr) Disque d'enregistrement d'information
EP0203788A3 (en) Information recording and reproducing apparatus
FR2536197B1 (fr) Support d'enregistrement d'informations
EP0264285A3 (en) Magneto-optical information reproducing apparatus
DE69029115D1 (de) Informationsaufzeichnungs- und Wiedergabegerät
EP0221782A3 (en) Optical information recording and reproducing apparatus
EP0219261A3 (en) Information recording and reproducing apparatus
FR2562278B1 (fr) Appareil d'enregistrement
FR2590065B1 (fr) Appareil d'enregistrement magneto-optique d'informations
FR2575578B1 (fr) Appareil d'enregistrement et de reproduction optiques d'informations
DE3665236D1 (en) Optical information recording and reproducing apparatus
FR2580413B1 (fr) Appareil d'enregistrement-reproduction optiques d'informations
FR2570649B1 (fr) Appareil d'enregistrement
FR2571575B1 (fr) Appareil pour l'enregistrement et la lecture d'information sur une bande magnetique
EP0264284A3 (en) Magneto-optical information reproducing apparatus

Legal Events

Date Code Title Description
ST Notification of lapse