FR1556020A - - Google Patents

Info

Publication number
FR1556020A
FR1556020A FR1556020DA FR1556020A FR 1556020 A FR1556020 A FR 1556020A FR 1556020D A FR1556020D A FR 1556020DA FR 1556020 A FR1556020 A FR 1556020A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1556020A publication Critical patent/FR1556020A/fr
Expired 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/7805—Recording or playback not using inductive heads, e.g. magneto-optical, thermomagnetic, magnetostrictive, galvanomagnetic
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
FR1556020D 1967-03-13 1968-02-28 Expired FR1556020A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62279567A 1967-03-13 1967-03-13

Publications (1)

Publication Number Publication Date
FR1556020A true FR1556020A (fr) 1969-01-31

Family

ID=24495546

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1556020D Expired FR1556020A (fr) 1967-03-13 1968-02-28

Country Status (5)

Country Link
US (1) US3521294A (fr)
DE (1) DE1574645A1 (fr)
FR (1) FR1556020A (fr)
GB (1) GB1160057A (fr)
SE (1) SE346160B (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966457A (en) * 1955-06-14 1999-10-12 Lemelson; Jerome H. Method for inspecting, coding and sorting objects
AT343373B (de) * 1972-10-20 1978-05-26 Basf Ag Magnetogrammtrager zur nicht unbemerkt veranderbaren aufzeichnung magnetischer signale und verfahren zur herstellung solcher aufzeichnungen
JPS5616917A (en) * 1979-07-17 1981-02-18 Olympus Optical Co Ltd Thermal and magnetic recorder
US4397929A (en) * 1981-06-18 1983-08-09 E. I. Du Pont De Nemours & Co. Process for generating a latent magnetic image
JPS58175674A (ja) * 1982-04-08 1983-10-14 Fuji Xerox Co Ltd 熱磁気記録装置
US4531137A (en) * 1983-07-20 1985-07-23 Xerox Corporation Thermoremanent magnetic imaging method
JPS61276103A (ja) * 1985-05-31 1986-12-06 Canon Inc 光磁気メモリ記録方法
US5239524A (en) * 1985-06-11 1993-08-24 Nikon Corporation Over write capable magnetooptical recording method, and magnetooptical recording apparatus and medium used therefor
ATE216528T1 (de) * 1986-07-08 2002-05-15 Canon Kk Gerät und system zur aufzeichnung auf einem magnetooptischen aufzeichnungsmedium
US6028824A (en) * 1986-07-08 2000-02-22 Canon Kabushiki Kaisha Magnetooptical recording medium allowing overwriting with two or more magnetic layers
EP0838814B1 (fr) * 1986-07-08 2002-02-27 Canon Kabushiki Kaisha Milieu d'enregistrement magnéto-optique permettant la surécriture avec deux ou plus de deux couches magnétiques et méthode d'enregistrement l'utilisant
JPS63249951A (ja) * 1987-04-03 1988-10-17 Mitsubishi Electric Corp 光磁気記録情報担体
US5043960A (en) * 1987-09-25 1991-08-27 Hitachi, Ltd. Overwritable magneto-optic recording and reproducing apparatus
EP0330507A3 (fr) * 1988-02-26 1990-07-04 Sumitomo Metal Industries, Ltd. Méthode d'enregistrement et de reproduction magnéto-optique, appareil utilisant une telle méthode et disque magnéto-optique
US5210724A (en) * 1988-03-07 1993-05-11 Canon Kabushiki Kaisha Optomagnetic recording method and apparatus which precludes an interface magnetic wall within block magnetic wall
JPH0227544A (ja) * 1988-07-15 1990-01-30 Canon Inc 光磁気記録媒体及び記録方法
US5121369A (en) * 1989-05-25 1992-06-09 International Business Machines Corporation Method and apparatus for direct overwriting information on a magneto-optical recording medium using constant laser beam modulated magnetic field generator
US5168482A (en) * 1989-08-31 1992-12-01 Sony Corporation Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer
JP3130929B2 (ja) * 1990-08-10 2001-01-31 ミネソタ マイニング アンド マニュファクチャリング カンパニー 高い記憶密度と直接重ね書きケイパビリティを有する熱磁気記録システム
US5612131A (en) * 1993-04-26 1997-03-18 International Business Machines Corporation Composite magneto-optic memory and media
WO2002084647A2 (fr) * 2001-04-12 2002-10-24 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Systeme de couches antiferromagnetiques et procedes de stockage magnetique de donnees dans ce type de systeme
EP1768840B1 (fr) * 2004-07-13 2014-09-03 The Regents of The University of California Dispositifs logiques et memoire magnetique multi-etat fondee sur une polarisation d'echange, et stockage magnetique magnetiquement stabilise

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164816A (en) * 1963-12-18 1965-01-05 Bell Telephone Labor Inc Magnetic-optical information storage unit and apparatus
US3368209A (en) * 1964-10-22 1968-02-06 Honeywell Inc Laser actuated curie point recording and readout system

Also Published As

Publication number Publication date
DE1574645A1 (de) 1972-03-23
GB1160057A (en) 1969-07-30
US3521294A (en) 1970-07-21
SE346160B (fr) 1972-06-26

Similar Documents

Publication Publication Date Title
AU425114B2 (fr)
FR1556020A (fr)
AU416737B2 (fr)
AU2277767A (fr)
AU342066A (fr)
AU2454867A (fr)
AU2528767A (fr)
AU2977667A (fr)
AU3151267A (fr)
AU3189468A (fr)
AU610966A (fr)
BE483855A (fr)
AU459699A (fr)
BE710175A (fr)
BE614676A (fr)
BE692199A (fr)
BE709565A (fr)
BE609934A (fr)
BE609869A (fr)
BE709545A (fr)
BE514578A (fr)
BE709421A (fr)
BE509738A (fr)
BE477645A (fr)
BE426053A (fr)

Legal Events

Date Code Title Description
ST Notification of lapse