CA2085763A1 - Dispositif d'entrainement pour tete magnetique - Google Patents

Dispositif d'entrainement pour tete magnetique

Info

Publication number
CA2085763A1
CA2085763A1 CA2085763A CA2085763A CA2085763A1 CA 2085763 A1 CA2085763 A1 CA 2085763A1 CA 2085763 A CA2085763 A CA 2085763A CA 2085763 A CA2085763 A CA 2085763A CA 2085763 A1 CA2085763 A1 CA 2085763A1
Authority
CA
Canada
Prior art keywords
inductor
node
main switch
auxiliary coil
driving device
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.)
Granted
Application number
CA2085763A
Other languages
English (en)
Other versions
CA2085763C (fr
Inventor
Mitsuo Ishii
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.)
Sharp Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2085763A1 publication Critical patent/CA2085763A1/fr
Application granted granted Critical
Publication of CA2085763C publication Critical patent/CA2085763C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H03K17/661—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals
    • 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
    • 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
    • G11B11/10595—Control of operating function
    • 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
    • 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
    • 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
    • G11B2005/0026—Pulse recording

Landscapes

  • Digital Magnetic Recording (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
CA002085763A 1991-12-24 1992-12-18 Dispositif d'entrainement pour tete magnetique Expired - Fee Related CA2085763C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3-341428 1991-12-24
JP3341428A JP2859766B2 (ja) 1991-12-24 1991-12-24 磁気ヘッド駆動回路

Publications (2)

Publication Number Publication Date
CA2085763A1 true CA2085763A1 (fr) 1993-06-25
CA2085763C CA2085763C (fr) 1997-01-14

Family

ID=18346001

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002085763A Expired - Fee Related CA2085763C (fr) 1991-12-24 1992-12-18 Dispositif d'entrainement pour tete magnetique

Country Status (6)

Country Link
US (1) US5351155A (fr)
EP (2) EP0550267B1 (fr)
JP (1) JP2859766B2 (fr)
KR (1) KR0124030B1 (fr)
CA (1) CA2085763C (fr)
DE (2) DE69227439T2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587851A (en) * 1991-12-24 1996-12-24 Sharp Kabushiki Kaisha Magnetic head driving device with prerecording energization
JPH0729234A (ja) * 1993-07-07 1995-01-31 Sony Corp 光磁気記録再生装置
JP3107265B2 (ja) * 1993-08-06 2000-11-06 キヤノン株式会社 磁気ヘッド駆動装置及び磁気記録装置
JPH07182717A (ja) * 1993-12-24 1995-07-21 Sharp Corp 光磁気記録再生装置
US5559643A (en) * 1994-02-28 1996-09-24 Sony Corporation Apparatus for recording a digital signal onto a recording medium at one of a plurality of data recording rates
KR0183824B1 (ko) * 1995-08-16 1999-04-15 김광호 자기기록장치 및 방법
JPH1186203A (ja) * 1997-09-03 1999-03-30 Canon Inc 磁気ヘッド駆動装置及び光磁気記録装置
JP2001176142A (ja) * 1999-12-16 2001-06-29 Canon Inc 磁気ヘッド駆動回路及び光磁気記録装置
CN112837887B (zh) * 2019-11-25 2022-09-09 北京华航无线电测量研究所 一种时分复用体制的局部交变磁场发生装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62129905A (ja) * 1985-11-30 1987-06-12 Toshiba Corp フロツピ−デイスク装置の磁気ヘツド駆動回路
JPH0743805B2 (ja) * 1986-10-07 1995-05-15 ソニー株式会社 磁気ヘツド駆動回路
JPS63244402A (ja) * 1987-03-31 1988-10-11 Sony Corp 記録用磁界発生回路
JPH0833974B2 (ja) * 1987-08-19 1996-03-29 ソニー株式会社 磁気ヘッド駆動回路
DE3836125A1 (de) * 1988-10-22 1990-05-03 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
DE3838858A1 (de) * 1988-11-17 1990-05-23 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
JPH03157839A (ja) * 1989-11-15 1991-07-05 Matsushita Electric Ind Co Ltd 光磁気ディスク用高周波変調磁界発生装置
JP2795757B2 (ja) * 1991-06-21 1998-09-10 シャープ株式会社 磁気ヘッド駆動回路
JPH05342508A (ja) * 1992-02-19 1993-12-24 Canon Inc 磁気ヘッド駆動装置、磁気記録装置及び情報記録方法

Also Published As

Publication number Publication date
EP0550267A1 (fr) 1993-07-07
KR930014518A (ko) 1993-07-23
EP0855704A2 (fr) 1998-07-29
US5351155A (en) 1994-09-27
KR0124030B1 (ko) 1997-11-28
DE69232783T2 (de) 2003-04-10
DE69227439T2 (de) 1999-05-12
EP0855704B1 (fr) 2002-09-18
EP0855704A3 (fr) 2000-08-16
DE69232783D1 (de) 2002-10-24
DE69227439D1 (de) 1998-12-03
CA2085763C (fr) 1997-01-14
JP2859766B2 (ja) 1999-02-24
JPH05174307A (ja) 1993-07-13
EP0550267B1 (fr) 1998-10-28

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Legal Events

Date Code Title Description
EEER Examination request
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