DE69224345T2 - Schaltungsvorrichtung zur Steuerung eines magnetischen Kopfs - Google Patents

Schaltungsvorrichtung zur Steuerung eines magnetischen Kopfs

Info

Publication number
DE69224345T2
DE69224345T2 DE69224345T DE69224345T DE69224345T2 DE 69224345 T2 DE69224345 T2 DE 69224345T2 DE 69224345 T DE69224345 T DE 69224345T DE 69224345 T DE69224345 T DE 69224345T DE 69224345 T2 DE69224345 T2 DE 69224345T2
Authority
DE
Germany
Prior art keywords
controlling
magnetic head
circuit device
circuit
magnetic
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 - Fee Related
Application number
DE69224345T
Other languages
English (en)
Other versions
DE69224345D1 (de
Inventor
Ishii Kazuyoshi
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of DE69224345D1 publication Critical patent/DE69224345D1/de
Application granted granted Critical
Publication of DE69224345T2 publication Critical patent/DE69224345T2/de
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
    • H03K17/16—Modifications for eliminating interference voltages or currents
    • H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
    • H03K17/162—Modifications for eliminating interference voltages or currents in field-effect transistor switches without feedback from the output circuit to the control circuit
    • 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
DE69224345T 1991-10-31 1992-10-26 Schaltungsvorrichtung zur Steuerung eines magnetischen Kopfs Expired - Fee Related DE69224345T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3311368A JP2889411B2 (ja) 1991-10-31 1991-10-31 磁気ヘッド駆動装置

Publications (2)

Publication Number Publication Date
DE69224345D1 DE69224345D1 (de) 1998-03-12
DE69224345T2 true DE69224345T2 (de) 1998-06-04

Family

ID=18016334

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224345T Expired - Fee Related DE69224345T2 (de) 1991-10-31 1992-10-26 Schaltungsvorrichtung zur Steuerung eines magnetischen Kopfs

Country Status (4)

Country Link
US (1) US5377055A (de)
EP (1) EP0540275B1 (de)
JP (1) JP2889411B2 (de)
DE (1) DE69224345T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3211999B2 (ja) * 1992-06-26 2001-09-25 キヤノン株式会社 光磁気記録装置
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
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
JP2977710B2 (ja) * 1993-10-26 1999-11-15 ティーディーケイ株式会社 光磁気記録用変調磁界発生装置および光磁気記録装置
US6031807A (en) * 1997-05-07 2000-02-29 Stmicroelectronics, Inc. Programming the inductance of read/write heads
US6005733A (en) * 1997-06-12 1999-12-21 Vtc, Inc. Preamplifier bias circuit for use in an AC coupled magnetoresistive read head amplifier
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
JP2000030203A (ja) 1998-05-07 2000-01-28 Canon Inc 磁気ヘッド用コイル、光磁気記録用磁気ヘッドおよび光磁気記録装置
JP3507360B2 (ja) 1998-05-07 2004-03-15 キヤノン株式会社 磁気ヘッド用平面コイル部品、光磁気記録用磁気ヘッドおよび光磁気記録装置
JP2001067748A (ja) 1999-08-31 2001-03-16 Canon Inc 光磁気記録ヘッドおよび光磁気記録装置
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
JP2001229589A (ja) 2000-02-16 2001-08-24 Canon Inc 光磁気記録媒体及び光磁気記録装置
JP2004227712A (ja) * 2003-01-24 2004-08-12 Canon Inc 磁気ヘッド支持機構
ES2280880T3 (es) * 2004-11-05 2007-09-16 Skidata Ag Dispositivo para escribir en una capa magnetica.
US8139319B2 (en) * 2009-02-23 2012-03-20 Hitachi Global Storage Technologies Netherlands B.V Perpendicular magnetic recording system with magnetic precession for fast switching of perpendicular write pole magnetization

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Also Published As

Publication number Publication date
JP2889411B2 (ja) 1999-05-10
DE69224345D1 (de) 1998-03-12
EP0540275A3 (en) 1993-06-09
US5377055A (en) 1994-12-27
EP0540275A2 (de) 1993-05-05
JPH05128402A (ja) 1993-05-25
EP0540275B1 (de) 1998-02-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee