KR880003302A - 열자기 기록 및 신호 재생 방법 - Google Patents

열자기 기록 및 신호 재생 방법 Download PDF

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KR880003302A
KR880003302A KR870009085A KR870009085A KR880003302A KR 880003302 A KR880003302 A KR 880003302A KR 870009085 A KR870009085 A KR 870009085A KR 870009085 A KR870009085 A KR 870009085A KR 880003302 A KR880003302 A KR 880003302A
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magnetic
magnetic thin
film
thin film
temperature
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KR870009085A
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KR950013704B1 (ko
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가쯔히사 아라따니
도미지 다나까
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오오가 노리오
소니 가부시끼 가이샤
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Priority claimed from JP61194962A external-priority patent/JPS6352355A/ja
Priority claimed from JP61194961A external-priority patent/JPS6352354A/ja
Priority claimed from JP61195616A external-priority patent/JPS6353738A/ja
Application filed by 오오가 노리오, 소니 가부시끼 가이샤 filed Critical 오오가 노리오
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    • 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
    • G11B11/03—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 deforming with non-mechanical means, e.g. laser, beam of particles
    • 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
    • G11B11/10515—Reproducing
    • 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
    • G11B11/10506—Recording by modulating only the light beam of 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
    • G11B11/10502—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
    • G11B11/10517—Overwriting or erasing
    • G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
    • G11B11/10521—Direct overwriting, i.e. performing erasing and recording using the same transducing means using a single light spot
    • 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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

내용 없음

Description

열자기 기록 및 신호 재생 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도 및 8도는 자화모드를 도시한 본 발명의 실시예의 개략도.
제2도는 적층 구조를 도시한 본 발명 실시예의 열자기 기록매체의 부분단면도
제3도는 기록장치의 개략도.

Claims (3)

  1. 자기적으로 결합된 제1 및 제2자기 박막의 중첩층을 갖고 있는 열자기 기록 매체를 사용하는 열자기 기록 방법은, 상기 중첩층이 상기 제1자기막의 큐리 온도 TC1보다 더 높은 온도에서 가열되지만 상기 제2 자기 박막의 자기 모멘트의 반전을 유발시키지 않는 제 1가열 상태와, 상기 중첩 층이 큐리온도 TC1보다 높은 온도 T2에서 가열되지만 상기 제2자기 박막의 자기 모멘트의 반전을 유발시키기에 충분히 높은 제2가열 상태에서 상기 중첩 층을 가열시키는 단계와, 상기 열자기 기록 매체의 가열된 층을 냉각시키므로써 기록 자화를 열자기 기록 매체에 형성하는 단계를 포함하며, 상기 제1 및 제2가열 상태는 기록되는 정보 신호에 따라 변조되는 것을 특징으로 하는 열자기 기록 방법.
  2. 자기적으로 결합된 제1 및 제2자기 박막의 중첩 자기막을 갖고 있는 열자기 기록 매체를 사용하는 열자기 기록 방법은, 상기 자기막이 제1자기 박막의 큐리 온도 TC1보다 높은 온도에서 가열되지만, 제2자기 박막의 부격자 자화의 반전을 유발시키지 않은 제1가열상태와, 상기 자기막이 큐리 온도 TC1보다 높은 온도 T2에서 가열되지만 실내온도와 기록되는 정보 신호에 따른 온도 T2사이의 보상온도를 갖고 있는 상기 제2자기 박막의 부격자 자화의 반전을 유발시키기에 충분히 높은 제2가열 상태 사이에 상기 자기막을 가열시키는 모드를 변조시키는 단계와, 상기 제1자기 박막의 부격자 자화의 방향이 상기 제1 및 제2자기 박막의 교환 에너지에 의한 상기 제2자기 박막의 부격자 자화의 방향과 동일하게 되도록 가열 상태로부터 적층 자기막을 냉각시키므로써 열자기 기록 매체상에 자기 기록을 형성화는 단계와, 상기 제2자기 박막의 부격자 자화가 반전되도록 상기 자기막을 실내온도까지 냉각시키는 단계를 포함하는 것을 특징으로 하는 열자기 기록 방법.
  3. 자기적으로 결합된 제1 및 제2자기 박막에 의해 형성된 중첩 자기막과, 상기 제1 및 제2자기 박막의 각각의 자기 모멘트의 각각의 방향은 서로에 대하여 반대로 있는 기록 부분과 제1 및 제2자기 박막의 각각의 자기 모멘트의 각각의 방향이 동일한 기록 부분을 갖고 있는 열자기 기록 매체에 기록된 신호를 재생하는 방법이, 상기 제1 및 제2자기 박막의 각각의 자기 모멘트의 각각의 방향이 상기 자기막으로부터 신호를 판독하기 전에 동일 방향으로 회전되도록 자계를 상기 자기 박막에 인가시키는 단계와, 자기 광학 효과의 수단으로 상기 적층 자기 박막으로 부터 신호를 재생하는 단계를 포함하는 것을 특징으로 하는 열자기 기록 매체에 기록된 재생방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870009085A 1986-08-20 1987-08-20 열자기 기록 방법 및 열자기 기록 매체의 신호 재생 방법 KR950013704B1 (ko)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP61-194961 1986-08-20
JP61194962A JPS6352355A (ja) 1986-08-20 1986-08-20 熱磁気記録方法
JP194961 1986-08-20
JP61194961A JPS6352354A (ja) 1986-08-20 1986-08-20 熱磁気記録方法
JP194962 1986-08-20
JP61-194962 1986-08-20
JP195616 1986-08-22
JP61-195616 1986-08-22
JP61195616A JPS6353738A (ja) 1986-08-22 1986-08-22 光磁気記録媒体の信号再生方法

Publications (2)

Publication Number Publication Date
KR880003302A true KR880003302A (ko) 1988-05-16
KR950013704B1 KR950013704B1 (ko) 1995-11-13

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KR1019870009085A KR950013704B1 (ko) 1986-08-20 1987-08-20 열자기 기록 방법 및 열자기 기록 매체의 신호 재생 방법

Country Status (7)

Country Link
US (1) US4955007A (ko)
EP (1) EP0257530B2 (ko)
KR (1) KR950013704B1 (ko)
CN (1) CN1012656B (ko)
AU (1) AU593127B2 (ko)
CA (1) CA1322408C (ko)
DE (1) DE3783833T3 (ko)

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KR950013704B1 (ko) 1995-11-13
CA1322408C (en) 1993-09-21
DE3783833T2 (de) 1993-06-09
DE3783833T3 (de) 1997-05-28
CN87106297A (zh) 1988-03-02
EP0257530A3 (en) 1990-09-26
AU593127B2 (en) 1990-02-01
DE3783833D1 (de) 1993-03-11
US4955007A (en) 1990-09-04
EP0257530B2 (en) 1996-11-06
CN1012656B (zh) 1991-05-22
EP0257530A2 (en) 1988-03-02
EP0257530B1 (en) 1993-01-27
AU7714687A (en) 1988-02-25

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