KR920701961A - 광디스크시스템 및 광디스크 - Google Patents

광디스크시스템 및 광디스크

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KR920701961A
KR920701961A KR1019910701176A KR910701176A KR920701961A KR 920701961 A KR920701961 A KR 920701961A KR 1019910701176 A KR1019910701176 A KR 1019910701176A KR 910701176 A KR910701176 A KR 910701176A KR 920701961 A KR920701961 A KR 920701961A
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magneto
optical
laser beam
recording layer
cover
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KR1019910701176A
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KR100221826B1 (ko
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데쓰 와다나베
요시오 아오끼
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오가 노리오
소니 가부시기가이샤
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    • G11—INFORMATION STORAGE
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    • 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
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    • 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
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    • 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
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    • G11B11/10543—Heads for reproducing using optical beam of radiation
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    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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    • 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
    • G11B11/10552—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base
    • G11B11/10554—Arrangements of transducers relative to each other, e.g. coupled heads, optical and magnetic head on the same base the transducers being disposed on the same side of the carrier
    • G—PHYSICS
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    • 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
    • G11B11/10558—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 in view of the loading or unloading of the carrier
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    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음

Description

광디스크시스템 및 광디스크
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 종래의 광자기디스크시스템의 기본적인 구성을 나타낸 단면도이다. 제2도는 본원 발명에 의한 제1의 실시예의 광자기디스크시스템의 구성을 나타낸 단면도이다. 제3도는 본원 발명에 의한 제2의 실시예의 광자기디스크시스템의 구성을 나타낸 단면도이다.

Claims (15)

  1. 기록 또는 재생을 위해 레이저빔이 조사되는 기록층과, 상기 기록층을 덮도록 배설되어 상기 레이저빔이 투과하는 투광성커버를 구비한 광디스크에 정보신호를 기록하고 및/또는 광디스크로부터 정보신호를 재생하는 시스템으로서, 상기 레이저빔을 발생시키기 위한 레이저빔발생수단과, 상기 레이저빔을 상기 투광성커버층을 통하여 상기 기록층에 접속하는 대물렌즈를 구비한 광디스크시스템에 있어서, 상기 광디스크의 상기 투광성커버의 두께가 0.6내지 0.1㎜의 범위에 있고, 상기 대물렌즈의 개구수가 0.55내지 0.70의 범위에 있는 광디스크시스템.
  2. 기록 또는 재생을 위해 0.55 내지 0.70의 범위의 개구수를 가진 대물렌즈를 통하여 레이저빔이 집속되는 기록층과, 상기 기록층을 덮도록 배설되어 상기 레이저빔이 투과하는 투광성커버를 구비하고, 상기 투광성커버의 두께가 0.6 내지 0.1㎜의 범위에 있는 광디스크.
  3. 기체(氣體)와, 상기 기체위에 배설되어 기록 또는 재생을 위해 레이저빔이 조사되는 광자기기록층과, 상기 광자기기록층을 덮도록 배설되어 상기 레이저빔이 투과하는 투광성커버를 구비한 광자기디스크에 정보신호를 기록하고 및/또는 광자기디스크로부터 정보 신호를 재생하는 시스템으로서, 상기 레이저빔을 발생시키기 위한 레이저빔발생수단과, 상기 레이저빔을 상기 투광성커버를 통하여 상기 광자기기록층에 집속하는 대물렌즈와, 상기 광자기기록층에 자계를 가하기 위한 자계공급수단을 구비하고, 상기 광자기디스크의 상기 투광성커버의 두께가 0.6내지 0.1㎜의 범위에 있고, 상기 대물렌즈의 개구수가 0.55 내지 0.70의 범위에 있는 광자기디스크시스템.
  4. 제3항에 있어서, 상기 자계공급수단은 상기 광자기디스크를 사이에 두고 상기 대물렌즈와 서로 대향하는 위치에 배설되어 있는 광자기디스크 시스템.
  5. 제3항에 있어서, 상기 자계공급수단은 상기 대물렌즈에 근접하여 배설되어 있는 광자기디스크시스템.
  6. 제5항에 있어서, 상기 자계공급수단은 상기 대물렌즈와 상기 광자기디스크와의 사이에 위치하도록 배설되어 상기 광자기디스크와 서로 대향하는 광자기디스크시스템.
  7. 기록 또는 재생을 위해 레이저빔이 조사되는 광자기기록층과, 상기 광자기기록층을 덮도록 배설되어 상기 레이저빔이 투과하는 투광성커버를 구비하여 상기 광자기기록층과 상기 투광성커버가 기체의 양면에 각각 배설되어 이루어지는 광자기디스크에 정보신호를 기록하고 및/또는 광자기디스크로부터 정보신호를 재생하는 시스템에 있어서, 상기 레이저빔을 발생시키기 위한 레이저빔 발생수단과, 상기 레이저빔을 상기 투광성커버를 통하여 상기 광자기기록층에 접속하는 대물렌즈와, 상기 광자기기록층에 자계를 가하기 위해 상기 대물렌즈에 근접하여 배설되어 있는 자계공급수단을 포함하는 광자기픽업장치를 한쌍 구비하고, 상기 한쌍의 광자기픽업장치는 상기 광자기디스크를 사이에 두고 서로 대향하는 위치에 배설되는 동시에, 상기 광자기디스크의 상기 각 투광성커버의 두께가 0.6내지 0.1㎜의 범위에 있고, 상기 각 대물렌즈의 개구수가 0.55내지 0.70의 범위에 있는 광자기 디스크시스템.
  8. 제7항에 있어서, 상기 각 자계공급수단은 상기 대물렌즈와 상기 광자기디스크와의 사이에 위치하도록 배설되어 상기 광자기디스크와 서로 대향하는 광자기디스크시스템.
  9. 제5항 또는 제7항에 있어서, 상기 자계공급수단은 투광성유리판에 코일패턴을 형성하여 이루어지는 광자기시스템.
  10. 제3항 또는 제7항에 있어서, 상기 광자기디스크는 상기 기체화 상기 광자기기록층과의 사이에 고투자율층을 구비하는 강자기디스크시스템.
  11. 기체와, 이 기체위에 배설되어 기록 및/또는 재생을 위해 0.55내지 0.70의 범위의 개구수를 가진 대물렌즈를 통하여 레이저빔이 집속되는 광자기기록층과, 이 광자기기록층을 덮도록 배설되어 상기 레이저빔이 투과하는 투광성커버를 구비하고, 상기 투광성커버의 두께가 0.6내지 0.1㎜의 범위에 있는 광자기디스크.
  12. 제11항에 있어서, 기체의 양면에 상기 광자기기록층과 상기 투광성커버가 각각 배설되어 이루어지는 광자기디스크.
  13. 제11항 또는 제12항에 있어서, 상기 기체와 상기 광자기기록층과의 사이에 고투자율층을 구비하는 광자기디스크.
  14. 제11항 또는 제12항에 있어서, 상기 투광성커버는 투광성접착제층 및 투광성판으로 이루어지는 광자기디스크.
  15. 제14항에 있어서, 상기 투광성접착제층은 광경화수지로 이루어지는 광자기디스크.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019910701176A 1990-01-31 1991-01-30 광디스크 시스템 및 광디스크 KR100221826B1 (ko)

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JP90-21210 1990-01-31
JP2021210A JPH03225650A (ja) 1990-01-31 1990-01-31 光ディスクシステム
PCT/JP1991/000113 WO1991011807A1 (en) 1990-01-31 1991-01-30 Optical disc system and optical disc

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HK1049910A1 (zh) 2003-05-30
DE69121656T2 (de) 1997-04-03
KR100221826B1 (ko) 1999-10-01
EP1225575A2 (en) 2002-07-24
EP0923074A1 (en) 1999-06-16
DE69133137D1 (de) 2002-11-21
EP1225575A3 (en) 2005-10-05
JPH03225650A (ja) 1991-10-04
DE69133137T2 (de) 2003-06-05
EP0715303B1 (en) 2002-10-16
WO1991011807A1 (en) 1991-08-08
EP0715303A2 (en) 1996-06-05
DE69133103T2 (de) 2003-06-05
AU7186091A (en) 1991-08-21
EP0473785A4 (en) 1992-06-24
EP0473785A1 (en) 1992-03-11
EP0923074B1 (en) 2002-09-04
EP0473785B1 (en) 1996-08-28
DE69133103D1 (de) 2002-10-10
AU631725B2 (en) 1992-12-03
DE69121656D1 (de) 1996-10-02
EP0715303A3 (en) 1998-03-18

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