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KR950009491A - 자기 판독 장치 - Google Patents

자기 판독 장치 Download PDF

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Publication number
KR950009491A
KR950009491A KR1019930018779A KR930018779A KR950009491A KR 950009491 A KR950009491 A KR 950009491A KR 1019930018779 A KR1019930018779 A KR 1019930018779A KR 930018779 A KR930018779 A KR 930018779A KR 950009491 A KR950009491 A KR 950009491A
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KR
South Korea
Prior art keywords
magnetic
magnetic field
magneto
optical
reading
Prior art date
Application number
KR1019930018779A
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English (en)
Other versions
KR100320484B1 (ko
Inventor
데니스 졸리베트
Original Assignee
아르레뜨 다당제
똥송 쎄 에스 에프
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.)
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Application filed by 아르레뜨 다당제, 똥송 쎄 에스 에프 filed Critical 아르레뜨 다당제
Publication of KR950009491A publication Critical patent/KR950009491A/ko
Application granted granted Critical
Publication of KR100320484B1 publication Critical patent/KR100320484B1/ko

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • 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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/332—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using thin films

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Heads (AREA)

Abstract

본 발명의 자기 매체 판독 장치는 자기 헤드의 판독 영역에 AC 자계를 유도하는 수단을 구비하고 있으며, 자기 광학 판독 헤드에도 적용할 수 있다.
응용분야; 자기 매체(자기 테이프 및 디스크)의 판독.

Description

자기 판독 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명에 따른 장치의 실시예를 간략하게 나타낸 도면, 제4 및 5도는 본 발명에 따른 장치의 실시예들을 상세하게 나타낸 도면.

Claims (15)

  1. 자기 판독 장치로서, 판독 영역을 포함한 적어도 하나의 자기층을 갖는 판독 헤드와, 상기 판독 영역에 자계를 중첩으로 유도하는 수단을 구비하는 것을 특징으로 하는 자기 판독 장치.
  2. 제1항에 있어서, 상기 유도 수단은 AC 자계를 유도하는 것을 특징으로하는 자기 판독 장치.
  3. 제1항에 있어서,상기 유도 수단은 자계를 자기 박막층의 평면에 위치하는 방향으로 유도하는 것을 특징으로하는 자기 판독 장치.
  4. 자기 광학 판독 장치로서, 판독 광선을 수신하고 판독 광선을 재전송하는 적어도 하나의 판독 영역을 포함한 자기 광학 판독 헤드와, 상기 판독 영역에 적어도 하나의 편광 AC자계를 유도하면서 자계를 중첩으로 유도하는 수단을 구비하는 것을 특징으로 하는 자기 광학 판독 장치.
  5. 제4항에 있어서, 상기 자기 광학 판독 헤드는 컬 효과를 이용한 자기 광학 헤드로서, 비자기물질로 제조된 간극층으로 분리되어 있는 두 물질층과 검출한 자계에 위치하도록 구성되어 있는 판독 영역과 판독되어진 빔을 수신하여 광 검출기에 전송하는 편광 분석기를 구비하는 것을 특징으로 하는 자기 광학 판독 장치.
  6. 제5항에 있어서, 상기 자기 유도 수단은 자기층의 대향하는 두 플랭크(flank)상에 위치하는 두 단극(end pole)을 갖는 자기 회로를 구비하는 것을 특징으로 하는 자기 광학 판독 장치.
  7. 제5항에 있어서, 상기 자기 유도 수단은 자계를 판독 헤드의 자기 물질층의 평면을 따르는 방향으로 유도하는 것을 특징으로 하는 자기 광학 판독 장치.
  8. 제5항에 있어서, 자기 테이프상의 정보 요소를 판독하도록 구성되어 있으며,판독 헤드의 자기층들은 상기 자기 테이프의 부근에 위치한 판독 영역을 포함하는 것을 특징으로 하는 자기 광학 판독 장치.
  9. 제1항에 있어서, 판독 영역이 정보 요소의 라인과 평행한 라인 형상을 갖는 라인을 따라 배열되어 있는 정보 요소를 판독하도록 구성되어 있는 것을 특징으로 하는 자기 판독 장치.
  10. 제4항에 있어서, 상기 자계 유도 수단은 AC 자계와 중첩하는 DC자계를 유도할 수 있는 것을 특징으로 하는 자기 광학 판독 장치.
  11. 제4항에 있어서, 상기 자계 유도 수단은 AC 발생기에 의해 교류가 공급되는 자계 유도 솔레노이드를 구비하는 것을 특징으로 하는 자기 광학 판독 장치.
  12. 제11항에 있어서, 상기 솔레노이드에는 또한 DC발생기에 의해 직류가 공급되는 것을 특징으로 하는 자기 광학 판독 장치.
  13. 제2항에 있어서, 상기 유도 수단에 의해 유도되어진 AC자계는 구형파형을 갖는 것을 특징으로 하는 자기 판독 장치.
  14. 제2항에 있어서, 정보 요소를 소정의 주파수로 판독할 수 있는 수단을 또한 구비하며, AC자계 주파수는 상기 소정 주파수보다 큰 것을 특징으로 하는 자기 판독 장치.
  15. 제14항에 있어서, AC 자계 주파수는 상기 소정 주파수의 짝수배인 것을 특징으로 하는 자기 판독 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930018779A 1992-09-18 1993-09-17 자기광학판독장치 KR100320484B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9211146 1992-09-18
FR9211146A FR2696037B1 (fr) 1992-09-18 1992-09-18 Dispositif de lecture magnétique.

Publications (2)

Publication Number Publication Date
KR950009491A true KR950009491A (ko) 1995-04-24
KR100320484B1 KR100320484B1 (ko) 2002-03-21

Family

ID=9433653

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930018779A KR100320484B1 (ko) 1992-09-18 1993-09-17 자기광학판독장치

Country Status (6)

Country Link
US (1) US5568336A (ko)
EP (1) EP0594471B1 (ko)
JP (1) JP4021944B2 (ko)
KR (1) KR100320484B1 (ko)
DE (1) DE69332734T2 (ko)
FR (1) FR2696037B1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464641B1 (ko) * 2002-04-10 2005-01-03 가람테크(주) 섬유분섬을 이용한 복합재료 제조방법 및 그 제조장치

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6327227B1 (en) * 1997-08-08 2001-12-04 Sharp Kabushiki Kaisha Magnetic recorder/reproduction apparatus including a selective temperature controller and magnetic recording reproduction method including selective temperature control
US6380735B1 (en) 1999-04-30 2002-04-30 Sumitomo Special Metals Co., Ltd. Orthogonal flux-gate type magnetic sensor
FR2797514B3 (fr) * 1999-08-10 2001-10-12 Thomson Csf Dispositif de lecture magneto-optique pour bandes magnetiques multipistes
FR2802696B1 (fr) * 1999-12-17 2002-07-19 Thomson Csf Lecteur magneto optique optimise par le polariseur de lumiere incidente
US6771567B2 (en) 2001-11-06 2004-08-03 O-Mass As Dual shield vertical magneto-optical read head
DE102004025937A1 (de) * 2004-05-27 2005-12-22 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zur Untersuchung von magnetichen Eigenschaften von Objekten

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NL276507A (ko) * 1961-04-03
US3513457A (en) * 1962-12-12 1970-05-19 Magnavox Co Magneto-optical transducing system
US3701133A (en) * 1967-05-05 1972-10-24 Philip Smaller Modulated magnetooptic readout system
US3665431A (en) * 1970-06-25 1972-05-23 Ibm Magneto-optic transducer
JPS5421315A (en) * 1977-07-18 1979-02-17 Mitsubishi Electric Corp Magnetic recorder
US4618901A (en) * 1982-07-19 1986-10-21 Nippon Telegraph & Telephone Public Corporation High density magnetic head
US4703378A (en) * 1984-03-01 1987-10-27 Sony Corporation Magnetic transducer head utilizing magnetoresistance effect
JPS60223042A (ja) * 1984-04-20 1985-11-07 Nippon Telegr & Teleph Corp <Ntt> マイクロ磁気ヘツド
JPS60223043A (ja) * 1984-04-20 1985-11-07 Nippon Telegr & Teleph Corp <Ntt> マイクロ磁気ヘツド
JPS61214260A (ja) * 1985-03-20 1986-09-24 Hitachi Ltd 光再生磁気ヘツド
JPS61253619A (ja) * 1985-05-07 1986-11-11 Hitachi Ltd 磁気抵抗効果型再生ヘツド
JPS61280013A (ja) * 1985-06-05 1986-12-10 Hitachi Ltd 磁気抵抗効果型再生ヘツド
JPS6246418A (ja) * 1985-08-23 1987-02-28 Nippon Telegr & Teleph Corp <Ntt> バイアス印加型磁気ヘツド
FR2652670B1 (fr) * 1989-10-03 1995-06-23 Thomson Csf Tete de lecture magnetooptique a haute resolution.
FR2656723B1 (fr) * 1989-12-28 1995-07-21 Thomson Consumer Electronics Tete de lecture multipiste magneto-optique.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464641B1 (ko) * 2002-04-10 2005-01-03 가람테크(주) 섬유분섬을 이용한 복합재료 제조방법 및 그 제조장치

Also Published As

Publication number Publication date
DE69332734T2 (de) 2003-11-13
JPH06195788A (ja) 1994-07-15
EP0594471A3 (en) 1994-07-06
DE69332734D1 (de) 2003-04-10
FR2696037B1 (fr) 1994-11-04
FR2696037A1 (fr) 1994-03-25
JP4021944B2 (ja) 2007-12-12
KR100320484B1 (ko) 2002-03-21
US5568336A (en) 1996-10-22
EP0594471A2 (fr) 1994-04-27
EP0594471B1 (fr) 2003-03-05

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