ES2043789T3 - Aparato de grabacion magneto-optico y circuito energetico para uso en un aparato de grabacion magneto-optica. - Google Patents

Aparato de grabacion magneto-optico y circuito energetico para uso en un aparato de grabacion magneto-optica.

Info

Publication number
ES2043789T3
ES2043789T3 ES88202153T ES88202153T ES2043789T3 ES 2043789 T3 ES2043789 T3 ES 2043789T3 ES 88202153 T ES88202153 T ES 88202153T ES 88202153 T ES88202153 T ES 88202153T ES 2043789 T3 ES2043789 T3 ES 2043789T3
Authority
ES
Spain
Prior art keywords
magneto
recording device
optical recording
coil
potential
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 - Lifetime
Application number
ES88202153T
Other languages
English (en)
Inventor
Johannes Leopoldus Bakx
Petrus Christianus Joha Hoeven
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of ES2043789T3 publication Critical patent/ES2043789T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
    • H03K17/6872—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor using complementary field-effect transistors
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

SE DESCRIBE UN APARATO DE GRABACION MAGNETO-OPTICO PROVISTO DE UN MODULADOR DE CAMPO MAGNETICO (8). DICHO MODULADOR (8) CONSTA DE UNA BOBINA (18) QUE GENERA UN CAMPO MAGNETICO Y ELEMENTOS DE CONEXION (11,12,15,16,22) PARA ACOPLAR AL MENOS UN TERMINAL (17) DE LA BOBINA MAGNETICA (18) DESDE UN PUNTO (10) CON UN POTENCIAL (VP) HASTA UN SEGUNDO PUNTO (14) DE POTENCIAL (VN), DEPENDIENDO DEL VALOR LOGICO DE UNA SEÑAL (VS), QUE PRODUCE EN LA BOBINA UNA CORRIENTE ALTERNA CUYA POLARIDAD DEPENDE DE DICHO VALOR LOGICO. LA BOBONA (18) ESTA ACOPLADA EN UN CIRCUITO PARALELO RESONANTE (18,21). LOS ELEMENTOS DE CONEXION INCLUYEN ELEMENTOS DE INHIBICION (12,16) QUE DESPUES DE QUE EL TERMINAL (17) HA SIDO DESCONECTADO DE UNO DE LOS PUNTOS DE POTENCIAL ANTES CITADOS (10,14), DESCONECTA EL OTRO PUNTO DE POTENCIAL DURANTE UN INTERVALO DE TIEMPO QUE SE CORRESPONDE CON MEDIO PERIODO DE RESONANCIA DEL CIRCUITO RESONANTE (18,21). ESTE MODULADOR DE CAMPO MAGNETICO FACILITA UNA INVERSION MUY RAPIDA DE LA CORRIENTEQUE ATRAVIESA LA BOBINA.
ES88202153T 1987-10-14 1988-09-30 Aparato de grabacion magneto-optico y circuito energetico para uso en un aparato de grabacion magneto-optica. Expired - Lifetime ES2043789T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8702451 1987-10-14

Publications (1)

Publication Number Publication Date
ES2043789T3 true ES2043789T3 (es) 1994-01-01

Family

ID=19850764

Family Applications (1)

Application Number Title Priority Date Filing Date
ES88202153T Expired - Lifetime ES2043789T3 (es) 1987-10-14 1988-09-30 Aparato de grabacion magneto-optico y circuito energetico para uso en un aparato de grabacion magneto-optica.

Country Status (12)

Country Link
EP (1) EP0312143B1 (es)
JP (1) JP2598312B2 (es)
KR (1) KR970001977B1 (es)
CN (1) CN1022353C (es)
BR (1) BR8805266A (es)
CA (1) CA1319986C (es)
DE (1) DE3883342T2 (es)
ES (1) ES2043789T3 (es)
HK (1) HK140194A (es)
MX (1) MX172384B (es)
SU (1) SU1757475A3 (es)
UA (1) UA13357A (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838858A1 (de) * 1988-11-17 1990-05-23 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
DE3907057A1 (de) * 1989-03-04 1990-09-13 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
US5402052A (en) * 1989-05-25 1995-03-28 International Business Machines Corporation Inductive current switching system with resonance
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
NL8901345A (nl) * 1989-05-29 1990-12-17 Philips Nv Werkwijze en inrichting voor het optekenen van signalen op een registratiedrager, alsmede een meetwerkwijze en meetinrichting voor toepassing in de optekenwerkwijze en optekeninrichting, alsmede een registratiedrager.
FR2647940B1 (fr) * 1989-06-02 1994-03-04 Thomson Csf Circuit de commande de modulation du champ magnetique pour l'enregistrement d'une memoire magneto-optique
NL8902728A (nl) * 1989-11-06 1991-06-03 Philips Nv Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager.
JPH0469802A (ja) * 1990-07-11 1992-03-05 Sony Corp 磁気変調コイル駆動回路
JP2733127B2 (ja) * 1990-08-07 1998-03-30 シャープ株式会社 光磁気記録装置
US5404342A (en) * 1992-01-16 1995-04-04 Sony Corporation Magnetic head device for magneto-optical disc system and magnetic head driving circuit
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
TW234182B (es) * 1992-11-20 1994-11-11 Philips Electronics Nv
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
JP3365435B2 (ja) * 1993-06-23 2003-01-14 キヤノン株式会社 光磁気記録装置
JPH08509314A (ja) * 1994-02-14 1996-10-01 フィリップス エレクトロニクス ネムローゼ フェン ノートシャップ 記録キャリヤに信号を記録する方法および記録装置
JP3659988B2 (ja) * 1994-07-14 2005-06-15 シャープ株式会社 光磁気記録装置
US6018538A (en) * 1997-06-18 2000-01-25 Lucent Technologies Inc. High speed non-biased semiconductor laser dione driver for high speed digital communication
JP2001023262A (ja) 1999-07-12 2001-01-26 Fujitsu Ltd 磁気ヘッドの巻線構造及び駆動回路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050735A (en) * 1979-03-13 1981-01-07 Decca Ltd Protecting oscillator transistor
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
IT1182673B (it) * 1985-11-12 1987-10-05 Iveco Fiat Dispositivo atto a trasferire in modo rapido una corrente in un carico di tipo induttivo
JPS63160041U (es) * 1987-04-06 1988-10-19

Also Published As

Publication number Publication date
UA13357A (uk) 1997-02-28
MX172384B (es) 1993-12-15
JP2598312B2 (ja) 1997-04-09
DE3883342T2 (de) 1994-03-10
CN1032597A (zh) 1989-04-26
CA1319986C (en) 1993-07-06
SU1757475A3 (ru) 1992-08-23
CN1022353C (zh) 1993-10-06
KR970001977B1 (ko) 1997-02-20
JPH01130302A (ja) 1989-05-23
KR890007235A (ko) 1989-06-19
HK140194A (en) 1994-12-16
DE3883342D1 (de) 1993-09-23
BR8805266A (pt) 1989-05-30
EP0312143B1 (en) 1993-08-18
EP0312143A1 (en) 1989-04-19

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