ATE120874T1 - Magnetfeldmodulationssteuerschaltung für das aufzeichnen eines magnetooptischen speichers. - Google Patents

Magnetfeldmodulationssteuerschaltung für das aufzeichnen eines magnetooptischen speichers.

Info

Publication number
ATE120874T1
ATE120874T1 AT90908557T AT90908557T ATE120874T1 AT E120874 T1 ATE120874 T1 AT E120874T1 AT 90908557 T AT90908557 T AT 90908557T AT 90908557 T AT90908557 T AT 90908557T AT E120874 T1 ATE120874 T1 AT E120874T1
Authority
AT
Austria
Prior art keywords
control circuit
pct
coil
switches
core
Prior art date
Application number
AT90908557T
Other languages
English (en)
Inventor
Jean-Claude Lehureau
Original Assignee
Thomson Csf
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 Csf filed Critical Thomson Csf
Application granted granted Critical
Publication of ATE120874T1 publication Critical patent/ATE120874T1/de

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
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G11B11/10508—Recording by modulating only the magnetic field at the transducer
AT90908557T 1989-06-02 1990-06-01 Magnetfeldmodulationssteuerschaltung für das aufzeichnen eines magnetooptischen speichers. ATE120874T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR898907307A FR2647940B1 (fr) 1989-06-02 1989-06-02 Circuit de commande de modulation du champ magnetique pour l'enregistrement d'une memoire magneto-optique

Publications (1)

Publication Number Publication Date
ATE120874T1 true ATE120874T1 (de) 1995-04-15

Family

ID=9382306

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90908557T ATE120874T1 (de) 1989-06-02 1990-06-01 Magnetfeldmodulationssteuerschaltung für das aufzeichnen eines magnetooptischen speichers.

Country Status (14)

Country Link
US (1) US5157641A (de)
EP (1) EP0428677B1 (de)
JP (1) JP3171594B2 (de)
KR (1) KR100189673B1 (de)
CN (1) CN1048107C (de)
AT (1) ATE120874T1 (de)
AU (1) AU626065B2 (de)
BR (1) BR9006789A (de)
CA (1) CA2033344A1 (de)
DE (1) DE69018383T2 (de)
ES (1) ES2072436T3 (de)
FR (1) FR2647940B1 (de)
GR (1) GR900100421A (de)
WO (1) WO1990015409A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907057A1 (de) * 1989-03-04 1990-09-13 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
JPH03214441A (ja) * 1990-01-18 1991-09-19 Canon Inc 光磁気記録装置
JP2976697B2 (ja) * 1992-05-29 1999-11-10 松下電器産業株式会社 光磁気ディスク用変調磁界発生装置
US5964759A (en) * 1992-10-27 1999-10-12 Ortho Development Corporation Electroconvergent cautery system
JP3179276B2 (ja) * 1993-03-26 2001-06-25 キヤノン株式会社 磁気ヘッド駆動方法および光磁気記録方法
JPH0729234A (ja) * 1993-07-07 1995-01-31 Sony Corp 光磁気記録再生装置
JPH07182717A (ja) * 1993-12-24 1995-07-21 Sharp Corp 光磁気記録再生装置
US6061307A (en) 1994-05-10 2000-05-09 Hitachi Maxell, Ltd. Magneto-optical recording medium having a plurality of magnetic layers
FR2723242B1 (fr) * 1994-07-26 1996-08-30 Thomson Csf Tete magnetique a element saturable et dispositif matriciel comportant un ensemble de tetes magnetiques
FR2739965B1 (fr) * 1995-10-17 1997-11-07 Thomson Csf Dispositif emetteur-recepteur de lumiere et systeme de lecture optique
US5920538A (en) * 1998-06-11 1999-07-06 Tandberg Data Asa Magneto-optical readout method and magneto-optical readout head and method for making same
FR2786345B1 (fr) 1998-11-24 2001-02-09 Thomson Csf Dispositif de cryptage quantique
US7149173B2 (en) * 2000-10-17 2006-12-12 Thales Medium for recording optically readable data, method for making same and optical system reproducing said data
FR2824905B1 (fr) * 2001-05-15 2003-08-29 Thomson Csf Gyrometre a fibre optique
CN109361379A (zh) * 2018-09-18 2019-02-19 天津大学 一种基于脉宽调制电路的电磁层析成像系统激励信号源
CN112670064B (zh) * 2020-05-08 2021-08-20 云南人民电力电气有限公司 一种节能滤波型电力变压器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484673A (en) * 1966-12-27 1969-12-16 Badger Meter Mfg Co Pulse generator with energy conserving circuit
US3737735A (en) * 1972-02-04 1973-06-05 Minnesota Mining & Mfg Autotransformer assisted resonated energy transfer circuit
JPS59140605A (ja) * 1983-01-31 1984-08-13 Canon Inc 光磁気記録装置の情報消去方法
US4872078A (en) * 1986-04-24 1989-10-03 International Business Machines Corporation Method and apparatus for encoding and direct overwriting of magneto-optic data
US4841407A (en) * 1986-06-16 1989-06-20 Canon Kabushiki Kaisha Magnetic field generator having a plurality of coils for generating magnetic field in substantially the same space and method of driving the same
JPS6334756A (ja) * 1986-07-28 1988-02-15 Sony Corp 光磁気メモリの記録方法
JP2575120B2 (ja) * 1986-07-31 1997-01-22 ソニー株式会社 光磁気記録装置
JPS6355746A (ja) * 1986-08-26 1988-03-10 Canon Inc 光磁気記録媒体の記録装置
DE3883342T2 (de) * 1987-10-14 1994-03-10 Philips Nv Magnetooptische Aufzeichnungsvorrichtung und Betätigungsschaltung zur Anwendung in derartigen, magnetooptischen Aufzeichnungsvorrichtungen.

Also Published As

Publication number Publication date
ES2072436T3 (es) 1995-07-16
KR920701956A (ko) 1992-08-12
GR900100421A (el) 1991-11-15
CN1048107C (zh) 2000-01-05
JP3171594B2 (ja) 2001-05-28
CA2033344A1 (fr) 1990-12-03
EP0428677A1 (de) 1991-05-29
CN1047751A (zh) 1990-12-12
AU626065B2 (en) 1992-07-23
DE69018383D1 (de) 1995-05-11
JPH04500285A (ja) 1992-01-16
WO1990015409A1 (fr) 1990-12-13
KR100189673B1 (ko) 1999-06-01
DE69018383T2 (de) 1995-10-05
US5157641A (en) 1992-10-20
FR2647940B1 (fr) 1994-03-04
FR2647940A1 (fr) 1990-12-07
AU5742990A (en) 1991-01-07
EP0428677B1 (de) 1995-04-05
BR9006789A (pt) 1991-08-13

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