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KR910008674A - 광자기 기록매체 및 광자기 기록장치 - Google Patents

광자기 기록매체 및 광자기 기록장치 Download PDF

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Publication number
KR910008674A
KR910008674A KR1019900015101A KR900015101A KR910008674A KR 910008674 A KR910008674 A KR 910008674A KR 1019900015101 A KR1019900015101 A KR 1019900015101A KR 900015101 A KR900015101 A KR 900015101A KR 910008674 A KR910008674 A KR 910008674A
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South Korea
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magneto
magnetization direction
optical recording
magnetic layer
magnetic field
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KR1019900015101A
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KR930010475B1 (ko
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교스께 요시모또
오사무 이또
구니마로 다나까
고이찌 다께우찌
이사오 와따나베
가즈히꼬 쯔쯔미
Original Assignee
시기 모리야
미쯔비시덴끼 가부시끼가이샤
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Publication of KR910008674A publication Critical patent/KR910008674A/ko
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Publication of KR930010475B1 publication Critical patent/KR930010475B1/ko

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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
    • G11B11/10—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
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
    • 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
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
    • G11B11/1056—Switching or mechanically reversing the magnetic field generator
    • 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
    • G11B11/10595—Control of operating function
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/03—Containers for flat record carriers

Abstract

내용 없음.

Description

광자기 기록매체 광자기 기록장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도 및 제2도는 본 발명에 관한 제1실시예의 광자기 기록매체의 평면도 및 확대 단면도.
제3도는 본 발명에 관한 제2실시예의 광자기 기록장치의 주요부 블럭도.

Claims (7)

  1. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있으며, 상기 제2자성층의 자화방향을 표시하는 자화방향 표시부(A)를 마련하고 있는 카트리지(CRT)에 수납되어 있는 광자기 기록매체.
  2. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있으며, 제2자성층의 자화방향을 표시하는 자화방향 표시부(A)를 마련하고 있는 카트리지(CRT)에 수납되어 있는 광자기 기록매체(4)에 광빔 및 자계를 부여해서 정보를 기록하는 광자기 기록장치에 있어서, 상기 자화방향 표시부의 내용에 따라서 제2자성층의 자화방향을 검출하는 수단과 검출한 자화방향과 역방향이 자계를 광자기 기록매체에 부여하는 자계발생수단(8)을 마련한 광자기 기록장치
  3. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있으며, 제2자성층의 자화방향에 관한 자화정보를 기록하고 있는 광자기 기록매체(4)에 광빔 및 자계를 부여해서 정보를 기록하는 광자기 기록장치에 있어서, 상기 자화정보를 재생한 신호에 따라서 제2자성층의 자화방향을 검출하는 수단과 검출한 자화방향과 역방향이 자계를 광자기 기록매체에 부여하는 자계발생수단(8)을 마련한 광자기 기록장치.
  4. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있는 광자기 기록매체(4)에 광빔 및 자계를 부여해서 정보를 기록하는 광자기 기록장치에 있어서, 상기 제1자성층에 기록한 정보를 재생한 신호에 따라서 제2자성층의 자화방향을 검출하는 수단과 검출한 자화방향과 역방향의 자계를 광자기 기록매체에 부여하는 자계발생수단(8)을 마련한 광자기 기록장치.
  5. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있으며, 제2자성층의 자화방향을 표시하는 자화방향 표시부(A)를 마련하고 있는 카트리지(CRT)에 수납하고 있는 광자기 기록매체(4)에 광빔 및 자계를 부여해서 정보를 기록하는 광자기 기록장치에 있어서, 상기 자화방향 표시부의 내용에 따라서 제2자성층의 자화방향을 검출하는 수단, 검출한 자화방향과 역방향의 자계를 광자기 기록매체에 부여하는 자계발생수단(8) 및 검출한 자화방향에 관련해서 상기 광빔의 광출력을 변경하는 광빔 출력제어수단(9)를 마련한 광자기 기록장치.
  6. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있으며, 제2자성층의 자화방향에 관한 자화정보를 기록하고 있는 광자기 기록매체(4)에 광빔 및 자계를 부여해서 정보를 기록하는 광자기 기록장치에 있어서, 상기 자화정보를 재생한 신호에 따라서 제2자성층의 자화방향을 검출하는 수단, 검출한 자화방향과 역방향의 자계를 광자기 기록매체에 부여하는 자계발생수단(8) 및 검출한 자화방향에 관련해서 상기 광빔의 광출력을 변경하는 광빔 출력제어수단(9)을 마련한 광자기 기록장치.
  7. 정보를 기록해야 할 제1자성층(2)와 자화방향을 1방향으로 하고 있는 제2자성층(3)을 적어도 포함해서 적층하고 있는 광자기 기록매체(4)에 광빔 및 자계를 부여해서 정보를 기록하는 광자기 기록장치에 있어서, 상기 제1자성층에 기록한 정보를 재생한 신호에 따라서 제2자성층의 자화방향을 검출하는 수단, 검출한 자화방향과 역방향의 자계를 광자기 기록매체에 부여하는 자계발생수단(8) 및 검출한 자화방향에 관련해서 상기 광빔의 광출력을 변경하는 광빔 출력제어수단(9)을 마련한 광자기 기록장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900015101A 1989-10-02 1990-09-24 광자기 기록매체 및 광자기 기록장치 KR930010475B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP25721589 1989-10-02
JP1-257215 1989-10-02
JP1-304274 1989-11-21
JP1304274A JP2835407B2 (ja) 1989-10-02 1989-11-21 光磁気記録媒体及び光磁気記録装置

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KR910008674A true KR910008674A (ko) 1991-05-31
KR930010475B1 KR930010475B1 (ko) 1993-10-25

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US (1) US5369628A (ko)
JP (1) JP2835407B2 (ko)
KR (1) KR930010475B1 (ko)
NL (1) NL9002146A (ko)

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KR930009225B1 (ko) * 1989-09-05 1993-09-24 미쯔비시덴기 가부시끼가이샤 광자기 기록 매체, 광자기 기록 장치 및 광자기 기록 매체의 제조방법
US5392263A (en) * 1990-01-31 1995-02-21 Sony Corporation Magneto-optical disk system with specified thickness for protective layer on the disk relative to the numerical aperture of the objective lens
US5587990A (en) * 1990-01-31 1996-12-24 Sony Corporation Optical disc system and optical disc therefor
US5414678A (en) * 1994-09-02 1995-05-09 Minnesota Mining And Manufacturing Company Magneto-optic recording medium having two recording layers, and drive for same
KR101584801B1 (ko) * 2008-12-23 2016-01-12 엘지전자 주식회사 공기조화기 및 그 제어방법
US10803896B1 (en) * 2020-01-15 2020-10-13 Western Digital Technologies, Inc. Data storage device using single-layer multi-level magnetic recording

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JPS59152551A (ja) * 1983-02-19 1984-08-31 Canon Inc 光磁気記録装置
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JP2570270B2 (ja) * 1986-10-08 1997-01-08 株式会社ニコン ツービームによる光磁気記録方法及び装置
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JPS63306555A (ja) * 1987-06-05 1988-12-14 Sharp Corp 光磁気記録媒体の記録面識別装置
US5043960A (en) * 1987-09-25 1991-08-27 Hitachi, Ltd. Overwritable magneto-optic recording and reproducing apparatus
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US5216663A (en) * 1988-08-24 1993-06-01 Mitsubishi Denki Kabushiki Kaisha Magneto-optic recording medium and manufacturing method

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Publication number Publication date
US5369628A (en) 1994-11-29
NL9002146A (nl) 1991-05-01
JPH03205634A (ja) 1991-09-09
JP2835407B2 (ja) 1998-12-14
KR930010475B1 (ko) 1993-10-25

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