KR920005087A - 광자기 기록 및 재생 방법과 장치 - Google Patents

광자기 기록 및 재생 방법과 장치 Download PDF

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Publication number
KR920005087A
KR920005087A KR1019910013937A KR910013937A KR920005087A KR 920005087 A KR920005087 A KR 920005087A KR 1019910013937 A KR1019910013937 A KR 1019910013937A KR 910013937 A KR910013937 A KR 910013937A KR 920005087 A KR920005087 A KR 920005087A
Authority
KR
South Korea
Prior art keywords
recording
recording medium
magnetization film
magnetic field
vertical magnetization
Prior art date
Application number
KR1019910013937A
Other languages
English (en)
Inventor
히로무 미야자와
도시아끼 미꼬시바
히로시 이또
마사야 이시다
쇼지 호시나
Original Assignee
야마무라 가쯔미
세이꼬 엡슨 가부시끼가이샤
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
Priority claimed from JP27672890A external-priority patent/JPH04153934A/ja
Priority claimed from JP18775591A external-priority patent/JPH056592A/ja
Application filed by 야마무라 가쯔미, 세이꼬 엡슨 가부시끼가이샤 filed Critical 야마무라 가쯔미
Publication of KR920005087A publication Critical patent/KR920005087A/ko

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Classifications

    • 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
    • G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
    • 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

Abstract

내용 없음

Description

광자기 기록 및 재생 방법과 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 기록/재생 장치의 제1및 제2실시예의 구성을 도시하는 블록 도면.
제2도는 제2실시예에 있어서의 기록광의 변조된 강도의 파형을 도시하는 도면.
제3도는 제2실시예의 평가 시험에 쓰인 매체의 구조를 도시하는 단면 도면.

Claims (4)

  1. 기록 매체에 설치된 수직 자화막에 데이타를 기록하는 방법에 있어서, 상기 기록 매체에 기록광과 기록 자계를 동시에 인가하므로서 상기 수직 자화막중에 상기 데이타의 기록으로서 배블 자구를 형성하는 기록 과정과, 상기 기록 과정후, 상기 수직 자화막의 막면에 수직방향으로 수정 자계를 인가하는 수정 과정을 갖는 것을 특징으로 하는 광자기 기록 방법.
  2. 기록 매체에 설치된 수직 자화막에 데이타를 기록하는 장치에 있어서, 상기 기록 매체를 이동시키는 이동 수단과, 상기 기록매체의 이동 경로중의 소정 위치에 배치되며 상기 기록매체에 기록광과 기록 자계를 인가해서 상기 수직 자화막중에 상기 데이타의 기록으로서 배블 자구를 형성하는 기록 수단과, 상기 이동경로를 따라서 상기 기록 수단의 하류에 배치되며, 상기 수직 자화막에 그 막면과는 수직방향의 수정 자계를 인가하는 수정 수단을 갖는 것을 특징으로 하는 광자기 기록 장치.
  3. 기록 매체에 설치된 수직 자화막중의 배블 자구로서 기록되어 있는 데이타를 재생하는 방법에 있어서, 상기 수직 자화막의 막면에 수직 방향으로 수정 자계를 인가하는 수정 과정과, 상기 수정 과정후, 상기 기록 매체에 재생광과 재생 자계를 동시에 인가하므로서 광자기 효과를 이용해서 상기 데이타를 읽어내는 과정을 갖는 것을 특징으로 하는 광자기 재생 방법.
  4. 기록 매체에 설치된 수직 자화막중의 배블 자구로서 기록되어 있는 데이타를 재생하는 장치에 있어서, 상기 기록매체를 이동시키는 이동 수단과, 상기 기록 매체의 이동 경로의 소정 위치에 배치되며, 상기 수직 자화막에 재생광과 재생 자계를 인가하고, 상기 데이타를 광자기 효과를 이용해서 읽어내는 재생수단과, 상기 이동 경로를 따른 상기 재생수단의 상류에 배치되며, 상기 수직 자화막에 그 막연과 수직 방향의 수정 자계를 인가하는 수정수단을 갖는 특징으로 하는 광자기 재생 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910013937A 1990-08-17 1991-08-13 광자기 기록 및 재생 방법과 장치 KR920005087A (ko)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP216502 1983-11-16
JP187755 1984-09-07
JP216503 1990-08-17
JP21650290 1990-08-17
JP21650190 1990-08-17
JP216501 1990-08-17
JP21650390 1990-08-17
JP27672890A JPH04153934A (ja) 1990-10-16 1990-10-16 光磁気記録再生方法および光磁気記録再生装置
JP276728 1990-10-16
JP18775591A JPH056592A (ja) 1990-08-17 1991-07-26 光磁気記録／再生方法および装置

Publications (1)

Publication Number Publication Date
KR920005087A true KR920005087A (ko) 1992-03-28

Family

ID=27528951

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910013937A KR920005087A (ko) 1990-08-17 1991-08-13 광자기 기록 및 재생 방법과 장치

Country Status (4)

Country Link
US (1) US5325345A (ko)
EP (1) EP0472377B1 (ko)
KR (1) KR920005087A (ko)
DE (1) DE69128058T2 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5596555A (en) * 1993-07-29 1997-01-21 Canon Kabushiki Kaisha Magnetooptical recording medium having magnetic layers that satisfy predetermined coercive force relationships, and recording/reproduction method for the medium
JP2664330B2 (ja) * 1993-09-02 1997-10-15 富士通株式会社 光磁気記録媒体
JP3414823B2 (ja) * 1994-03-15 2003-06-09 富士通株式会社 光磁気記録媒体
JP3332750B2 (ja) * 1996-09-19 2002-10-07 キヤノン株式会社 磁気記録媒体、記録方法、再生方法、及び、磁性記録媒体の製造方法
DE19756458A1 (de) * 1997-12-18 1999-06-24 Thomson Brandt Gmbh Magneto-optisches Aufzeichnungs- oder Wiedergabegerät
US6602301B1 (en) * 1999-04-26 2003-08-05 Fuji Photo Film Co., Ltd. Method and apparatus for magnetic transfer
JP2004165451A (ja) * 2002-11-13 2004-06-10 Sony Corp 磁気記憶素子及び磁気記憶素子の記録方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061892B1 (en) * 1981-03-26 1988-06-22 Sony Corporation Thermomagnetic recording methods
CA1212757A (en) * 1982-09-25 1986-10-14 Tsutomu Okamoto Thermomagnetic recording method
US4882718A (en) * 1986-03-07 1989-11-21 Movid Information Technology, Inc. Single-head, direct overwrite magneto-optic system and method
JPS63239638A (ja) * 1987-03-26 1988-10-05 Canon Inc 光磁気記録装置
JP2754537B2 (ja) * 1987-05-18 1998-05-20 株式会社ニコン 光磁気記録媒体並びにそれを使用したビット形成方法
JPH0786984B2 (ja) * 1987-12-08 1995-09-20 キヤノン株式会社 光磁気記録装置
JPH0242664A (ja) * 1988-08-01 1990-02-13 Matsushita Electric Ind Co Ltd 光熱磁気記録媒体並びにその記録装置及びこれらを用いた光熱磁気記録方式
JPH0386954A (ja) * 1989-08-30 1991-04-11 Mitsubishi Electric Corp 光磁気記録装置
JP3185932B2 (ja) * 1990-06-21 2001-07-11 セイコーエプソン株式会社 光磁気記録再生方法ならびに光磁気記録再生装置

Also Published As

Publication number Publication date
EP0472377A3 (en) 1992-08-19
DE69128058T2 (de) 1998-04-09
US5325345A (en) 1994-06-28
DE69128058D1 (de) 1997-12-04
EP0472377B1 (en) 1997-10-29
EP0472377A2 (en) 1992-02-26

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