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MX172384B - Aparato grabador optico-magnetico y circuito energizador para usarlo con el aparato grabador optico-magnetico - Google Patents

Aparato grabador optico-magnetico y circuito energizador para usarlo con el aparato grabador optico-magnetico

Info

Publication number
MX172384B
MX172384B MX013390A MX1339088A MX172384B MX 172384 B MX172384 B MX 172384B MX 013390 A MX013390 A MX 013390A MX 1339088 A MX1339088 A MX 1339088A MX 172384 B MX172384 B MX 172384B
Authority
MX
Mexico
Prior art keywords
optical
magnetic recording
current
circuit
recording device
Prior art date
Application number
MX013390A
Other languages
English (en)
Inventor
Johannes Leopoldus Bakx
Petrus Christianus Joha Hoeven
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of MX172384B publication Critical patent/MX172384B/es

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

Abstract

La presente invención se refiere a un aparato grabador óptico-magnético para grabación de una señal de información en un portagrabaciones óptico-magnéticas, cuyo aparato grabador comprende una bobina de inducción para la generación de un campo magnético en el portagrabación, un circuito energizador para energizar la bobina de inducción, y un circuito de control para controlar el circuito energizador, dependiente de la señal de información, para que module el campo magnético generado, de conformidad con la señal de información, aparato que se caracteriza: porque la bobina de ducción está situada en un circuito de resonancia en paralelo; porque el circuito energizador comprende conmutadores controlados por el circuito de control para que cierren alternadamente un primer y un segundo trayectos de corriente con una corriente positiva y una corriente negativa, e inhibidores de corriente construidos para que, después de la interrupción de uno de los trayectos de corriente, inhiban la alimentación de corriente a la bobina de inducción, por vía del otro trayecto de corriente, durante un intervalo de tiempo que corresponda sustancialmente con la mitad del periodo resonante del circuito de resonancia.
MX013390A 1987-10-14 1988-10-13 Aparato grabador optico-magnetico y circuito energizador para usarlo con el aparato grabador optico-magnetico MX172384B (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
MX172384B true MX172384B (es) 1993-12-15

Family

ID=19850764

Family Applications (1)

Application Number Title Priority Date Filing Date
MX013390A MX172384B (es) 1987-10-14 1988-10-13 Aparato grabador optico-magnetico y circuito energizador para usarlo con el aparato grabador optico-magnetico

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
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
US5402052A (en) * 1989-05-25 1995-03-28 International Business Machines Corporation Inductive current switching system with resonance
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
DE69517893T2 (de) * 1994-02-14 2001-02-15 Koninklijke Philips Electronics N.V., Eindhoven Aufzeichnungsvorrichtung und -verfahren zur aufzeichnung von signalen auf einem aufzeichnungsträger
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
DE3883342D1 (de) 1993-09-23
ES2043789T3 (es) 1994-01-01
HK140194A (en) 1994-12-16
UA13357A (uk) 1997-02-28
JP2598312B2 (ja) 1997-04-09
DE3883342T2 (de) 1994-03-10
SU1757475A3 (ru) 1992-08-23
JPH01130302A (ja) 1989-05-23
BR8805266A (pt) 1989-05-30
KR890007235A (ko) 1989-06-19
CN1022353C (zh) 1993-10-06
KR970001977B1 (ko) 1997-02-20
CN1032597A (zh) 1989-04-26
EP0312143A1 (en) 1989-04-19
CA1319986C (en) 1993-07-06
EP0312143B1 (en) 1993-08-18

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