KR880014532A - 광자기 디스크 재생장치 - Google Patents

광자기 디스크 재생장치 Download PDF

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Publication number
KR880014532A
KR880014532A KR1019880006222A KR880006222A KR880014532A KR 880014532 A KR880014532 A KR 880014532A KR 1019880006222 A KR1019880006222 A KR 1019880006222A KR 880006222 A KR880006222 A KR 880006222A KR 880014532 A KR880014532 A KR 880014532A
Authority
KR
South Korea
Prior art keywords
magneto
optical disk
detecting elements
data
polarization
Prior art date
Application number
KR1019880006222A
Other languages
English (en)
Other versions
KR970001373B1 (ko
Inventor
히데요시 호리마이
히로시 오가와
Original Assignee
오오가 노리오
소니 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
Application filed by 오오가 노리오, 소니 가부시끼가이샤 filed Critical 오오가 노리오
Publication of KR880014532A publication Critical patent/KR880014532A/ko
Application granted granted Critical
Publication of KR970001373B1 publication Critical patent/KR970001373B1/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
    • G11B11/10515—Reproducing

Abstract

내용 없음

Description

광자기 디스크 재생장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 1실시예를 도시한 구성도, 제2도는 그것의 설명을 위한 도면, 제3도는 본 발명의 실시예를 도시하는 구성도.

Claims (1)

  1. 광학적으로 데이타를 기록 및 소거할 수 있는 기록매체를 갖는 광자기 디스크로부터 상기 데이타를 생함에 있어서, 상기한 광자기 디스크에 레이저광을 샘플링 주기로 계속적으로 조사하여, 상기한 광자기 디스크로부터 상기한 데이타에 대응하여 편광면의 회전한 편광을 얻어, 이 편광으로부터 소정의 편광면의 편광성분을 검출기로 검출하여, 이 검출기의 출력으로부터 상기한 데이타를 재생하도록 한 광자기 디스크 재생장치에 있어서, 상기한 검출기의 후단에 적분수단을 설치한 것을 특징으로 하는 광자기 디스크 재생장치.
    ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.
KR1019880006222A 1987-05-28 1988-05-27 광자기 디스크 재생장치 KR970001373B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP132392 1987-05-28
JP62132392A JP2687350B2 (ja) 1987-05-28 1987-05-28 光磁気ディスク再生装置

Publications (2)

Publication Number Publication Date
KR880014532A true KR880014532A (ko) 1988-12-24
KR970001373B1 KR970001373B1 (ko) 1997-02-05

Family

ID=15080312

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880006222A KR970001373B1 (ko) 1987-05-28 1988-05-27 광자기 디스크 재생장치

Country Status (7)

Country Link
US (1) US4964110A (ko)
EP (1) EP0292733B1 (ko)
JP (1) JP2687350B2 (ko)
KR (1) KR970001373B1 (ko)
AT (1) ATE96241T1 (ko)
CA (1) CA1310120C (ko)
DE (1) DE3885000T2 (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69022451T2 (de) * 1989-03-09 1996-03-21 Canon Kk Magnetooptisches Aufzeichnungsgerät mit Mitteln zur Verzögerung des Eingangssignales zur Verhinderung von Bitverschiebung.
US5016992A (en) * 1989-03-16 1991-05-21 Forschungszentrum Julich Gmbh Method of and apparatus for the reading of magnetically stored information
JP2621537B2 (ja) * 1990-02-07 1997-06-18 松下電器産業株式会社 光電流電圧変換器及び光ディスク記録／再生装置
US5410531A (en) * 1991-03-28 1995-04-25 Sanyo Electric Co., Ltd. Noise reduction in a multiplex recorded optical information system
US5265085A (en) * 1992-06-15 1993-11-23 International Business Machines Simultaneous MO and ROM optical disk signal detection
US5442618A (en) * 1993-11-12 1995-08-15 International Business Machines Corporation Common mode rejection control in an optical disk drive
US5491682A (en) * 1994-09-21 1996-02-13 Eastman Kodak Company Apparatus and method for controllable gain and phase matching in an optical data storage system with source noise subtraction
US5537383A (en) * 1995-03-01 1996-07-16 Eastman Kodak Company Optical data storage system with differential data detection and source noise subtraction for use with magneto-optic, write-once and other optical media
US5586101A (en) * 1995-03-01 1996-12-17 Eastman Kodak Company Magneto-optic data storage system with differential detection channels having separate gain control circuit
DE19641754A1 (de) * 1996-10-10 1998-04-16 Deutsche Telekom Ag Optischer Zufallsgenerator basierend auf der Einzelphotonenstatistik am optischen Strahlteiler
JP2002358678A (ja) 2001-05-31 2002-12-13 Fujitsu Ltd トラックサーボ制御方法、トラックサーボ制御装置及び光記憶装置
US20040090874A1 (en) * 2002-11-08 2004-05-13 Kunjithapatham Balasubramanian Apparatus and method for effective reduction of a laser beam spot size
US6998905B2 (en) * 2004-05-05 2006-02-14 Elantec Semiconductor, Inc. Noise cancellation circuits and methods

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593333A (en) * 1969-11-26 1971-07-13 Ibm Position detection for a track following servo system
JPS5619176A (en) * 1979-07-25 1981-02-23 Mitsubishi Electric Corp Optical information reader
JPS6022304A (ja) * 1983-07-18 1985-02-04 Hitachi Ltd 巻線用超電導線材
US4691308A (en) * 1984-04-19 1987-09-01 Nippon Kogaku K. K. Apparatus for reproducing information from magnetooptical recording medium
JPS618753A (ja) * 1984-06-21 1986-01-16 Nippon Kogaku Kk <Nikon> 光磁気再生装置
WO1985005486A1 (en) * 1984-05-23 1985-12-05 Sony Corporation Apparatus for recording data
JPS62110644A (ja) * 1985-11-08 1987-05-21 Sharp Corp 光磁気デイスクの記録方式
JP2650249B2 (ja) * 1987-01-12 1997-09-03 ソニー株式会社 光磁気ディスク再生装置
US4774615A (en) * 1987-02-17 1988-09-27 Eastman Kodak Company Magneto-optic read-out method and apparatus with polarization correction means
US4847824A (en) * 1987-12-21 1989-07-11 International Business Machines Corporation Readback circuits for magnetooptic players

Also Published As

Publication number Publication date
EP0292733A2 (en) 1988-11-30
DE3885000T2 (de) 1994-05-19
JPS63298734A (ja) 1988-12-06
JP2687350B2 (ja) 1997-12-08
CA1310120C (en) 1992-11-10
US4964110A (en) 1990-10-16
EP0292733B1 (en) 1993-10-20
DE3885000D1 (de) 1993-11-25
KR970001373B1 (ko) 1997-02-05
ATE96241T1 (de) 1993-11-15
EP0292733A3 (en) 1989-04-05

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