KR920017040A - 광자기기록방법 및 광자기기록재생장치 - Google Patents

광자기기록방법 및 광자기기록재생장치 Download PDF

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Publication number
KR920017040A
KR920017040A KR1019920000948A KR920000948A KR920017040A KR 920017040 A KR920017040 A KR 920017040A KR 1019920000948 A KR1019920000948 A KR 1019920000948A KR 920000948 A KR920000948 A KR 920000948A KR 920017040 A KR920017040 A KR 920017040A
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KR
South Korea
Prior art keywords
magneto
recording
reproducing
optical
light beam
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Application number
KR1019920000948A
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English (en)
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KR100239812B1 (ko
Inventor
이사무 나까오
아쓰시 후꾸모도
도시끼 우다가와
슌지 요시무라
Original Assignee
오가 노리오
소니 가부시기가이샤
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Application filed by 오가 노리오, 소니 가부시기가이샤 filed Critical 오가 노리오
Publication of KR920017040A publication Critical patent/KR920017040A/ko
Application granted granted Critical
Publication of KR100239812B1 publication Critical patent/KR100239812B1/ko

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • 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
    • 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
    • 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

Abstract

내용 없음

Description

광자기기록방법 및 광자기기록재생장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명에 의한 광자기기록제생장치의 기록용 광학헤드의 일예의 구성도, 제2도는 본원 발명에 의한 광자기기록재생장치의 재생용 광학헤드의 일예의 구성도, 제3도는 본원 발명에 의한 광자기기록매체의 일예의 약선적 단면도.

Claims (2)

  1. 최소한 재생층과, 기록층을 가지며, 상기 재생층의 자화상태를 변화시키면서 독출광을 조사(照射)하여, 이 독출광의 스폿보다 작은 영역에서 기록의 독출을 자기광학효과에 의해서 행하도록 한 광자기기록매체가 사용되고, 상기 광자기기록매체에 대한 기록시의 조사광의 파장을 상기 독출광의 파장보다 충분히 작게 한 것을 특징으로 하는 광자기기록 방법.
  2. 최소한 재생층과, 기록층을 가지며, 상기 재생층의 자화상태를 변화시키면서 독출광을 조사하여, 이 독출광의 스폿보다 작은 영역에서 기록의 독출을 자기광학효과에 의해서 행하도록 한 광자기기록매체가 사용되는 광자기록재생장치에 있어서, 상기 광자기기록매체에 대한 기록용 광학헤드와, 재생용 광학헤드를 가지고, 상기 기록용 광학헤드에 의한 광의 파장을 상기 제셍용 광학헤드에 의한 독출광의 파장에 비해 충분히 작게 선정한 것을 특징으로 하는 광자기기록재생장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019920000948A 1991-02-08 1992-01-24 광자기기록방법 및 광자기기록재생장치 KR100239812B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91-18078 1991-02-08
JP3018078A JPH04255947A (ja) 1991-02-08 1991-02-08 光磁気記録方法と光磁気記録再生装置

Publications (2)

Publication Number Publication Date
KR920017040A true KR920017040A (ko) 1992-09-26
KR100239812B1 KR100239812B1 (ko) 2000-01-15

Family

ID=11961620

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920000948A KR100239812B1 (ko) 1991-02-08 1992-01-24 광자기기록방법 및 광자기기록재생장치

Country Status (7)

Country Link
US (1) US5208799A (ko)
EP (1) EP0498455B1 (ko)
JP (1) JPH04255947A (ko)
KR (1) KR100239812B1 (ko)
AT (1) ATE151907T1 (ko)
CA (1) CA2060535A1 (ko)
DE (1) DE69218986T2 (ko)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357493A (en) * 1987-07-24 1994-10-18 Matsushita Electric Industrial Co., Ltd. Magneto-optic memory device for overwriting information on magneto-optic recording medium by using a pair of light spots without using an external magnetic field
JP3057516B2 (ja) * 1991-02-05 2000-06-26 ソニー株式会社 光記録媒体の信号再生方法
US5335213A (en) * 1991-02-13 1994-08-02 Sony Corporation Positional detection of a magneto-optic recording medium for controlling irradiation of a relief region
JPH0520725A (ja) * 1991-07-11 1993-01-29 Sony Corp 光ピツクアツプ装置
JPH06103622A (ja) * 1992-09-18 1994-04-15 Nikon Corp Ｒ層を有するオーバーライト可能な光磁気記録媒体
US5363363A (en) * 1992-10-16 1994-11-08 Eastman Kodak Company Apparatus and method for laser noise cancellation in an optical storage system using a front facet monitor signal
JP3639607B2 (ja) * 1992-10-21 2005-04-20 キヤノン株式会社 光磁気情報記録再生装置
JP3229907B2 (ja) * 1992-11-09 2001-11-19 パイオニア株式会社 光記録媒体及び光記録媒体再生装置
JP2546477B2 (ja) * 1992-12-21 1996-10-23 日本電気株式会社 光磁気記録媒体とその記録再生方法及び記録再生装置
JPH07169129A (ja) * 1993-12-13 1995-07-04 Canon Inc 光ヘッド
JP2809991B2 (ja) * 1994-01-14 1998-10-15 富士通株式会社 光磁気記録媒体及び該媒体に記録された情報の再生方法
US5699342A (en) * 1994-02-07 1997-12-16 Mitsubishi Denki Kabushiki Kaisha Method of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laser
JPH07230637A (ja) * 1994-02-18 1995-08-29 Canon Inc 光磁気記録媒体および該媒体を用いた情報記録再生方法
JPH07244876A (ja) * 1994-03-01 1995-09-19 Sharp Corp 光磁気記録媒体及び光磁気記録再生方法
EP0686970A3 (en) * 1994-06-10 1996-07-24 Canon Kk Magneto-optical recording medium and playback method using this medium
JPH08287537A (ja) * 1995-04-14 1996-11-01 Canon Inc 光磁気記録媒体及び該媒体を用いた情報再生方法
US5717662A (en) * 1995-05-12 1998-02-10 Canon Kabushiki Kaisha Super-resolution magneto-optical recording medium using magnetostatic coupling and information reproduction method using the medium
US6226233B1 (en) 1996-07-30 2001-05-01 Seagate Technology, Inc. Magneto-optical system utilizing MSR media
JP2005530292A (ja) * 2002-06-17 2005-10-06 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 磁区拡大読み取りのための動的コピーウィンドウ制御
US7950587B2 (en) * 2006-09-22 2011-05-31 The Board of Regents of the Nevada System of Higher Education on behalf of the University of Reno, Nevada Devices and methods for storing data
US20080084634A1 (en) * 2006-09-22 2008-04-10 Board Of Regents Of The Nevada System Of Higher Education On Behalf Of The University Nevada Devices and methods for storing data

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826336A (ja) * 1981-08-06 1983-02-16 Pioneer Electronic Corp 光磁気記録方式の記録再生装置
JPS60187933A (ja) * 1984-03-07 1985-09-25 Toshiba Corp 光学的記録再生装置
DE3601265A1 (de) * 1985-01-18 1986-07-24 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa Optisches system fuer informationsaufzeichnung
JPS62137754A (ja) * 1985-12-09 1987-06-20 Canon Inc 光磁気再生方法
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
EP0318925B1 (en) * 1987-11-30 1994-04-20 Sony Corporation Method for optically reproducing a signal from magneto-optical recording medium
JPH01201848A (ja) * 1988-02-05 1989-08-14 Fuji Photo Film Co Ltd 磁気光学薄膜
NL8801327A (nl) * 1988-05-24 1989-12-18 Philips Nv Methode voor het optisch aftasten van een informatievlak en optische registratiedragers en aftastinrichtingen geschikt voor toepassing van de methode.
EP0348198A3 (en) * 1988-06-23 1991-01-16 Kabushiki Kaisha Toshiba Method of magneto-optically recording and erasing information and magneto-optical information storage medium for carrying out the method
EP0393652B1 (en) * 1989-04-19 1996-11-06 Hitachi, Ltd. Magneto-optical recording and reproducing method, magnetooptical memory apparatus
US5142513A (en) * 1989-04-20 1992-08-25 Victor Company Of Japan, Ltd. Magneto-optical storage medium and magneto-optical overwrite system with magnetic characteristic change by variation of thermal condition for recording information
US5118541A (en) * 1989-06-19 1992-06-02 Matsushita Electric Industrial Co., Ltd. Erasable optical disk media and method of recording/erasing the same

Also Published As

Publication number Publication date
EP0498455A2 (en) 1992-08-12
US5208799A (en) 1993-05-04
ATE151907T1 (de) 1997-05-15
KR100239812B1 (ko) 2000-01-15
JPH04255947A (ja) 1992-09-10
DE69218986D1 (de) 1997-05-22
EP0498455B1 (en) 1997-04-16
EP0498455A3 (en) 1992-12-09
CA2060535A1 (en) 1992-08-09
DE69218986T2 (de) 1997-11-20

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