KR910003616A - Magneto-optical pickup - Google Patents

Magneto-optical pickup Download PDF

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Publication number
KR910003616A
KR910003616A KR1019900011464A KR900011464A KR910003616A KR 910003616 A KR910003616 A KR 910003616A KR 1019900011464 A KR1019900011464 A KR 1019900011464A KR 900011464 A KR900011464 A KR 900011464A KR 910003616 A KR910003616 A KR 910003616A
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South Korea
Prior art keywords
magneto
optical recording
laser beam
recording medium
optical
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KR1019900011464A
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Korean (ko)
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KR100225730B1 (en
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기에쯔 이와부찌
고지 사사끼
데쯔 와따나베
다모쯔 야마가미
요시오 아오끼
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오오가 노리오
소니 가부시끼가이샤
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Publication of KR100225730B1 publication Critical patent/KR100225730B1/en

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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
    • 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
    • G11B11/10532—Heads
    • G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
    • G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
    • 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
    • G11B11/10552—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

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

내용 없음.No content.

Description

광자기 픽업 장치Magneto-optical pickup

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명의 제1실시예에 따른 광자기 픽업 장치의 배열을 도시하는 단면도.3 is a sectional view showing the arrangement of the magneto-optical pickup device according to the first embodiment of the present invention.

제4도는 제3도에 도시된 광자기 픽업 장치에서 사용될 수 있는, 코일 패턴으로 형성된 광유리의 정 면도.FIG. 4 is an illustration of a light glass formed in a coil pattern, which can be used in the magneto-optical pickup device shown in FIG.

제5도는 본 발명의 제2실시예에 따른 광자기 픽업 장치의 배열을 도시하는 단면도.5 is a cross-sectional view showing the arrangement of the magneto-optical pickup apparatus according to the second embodiment of the present invention.

Claims (16)

레이저 빔 방출 수단으로부터 광자기 기록 매체상에 방출된 레이저 빔 포커 수단과, 상기 레이저 빔 포커싱 수단에 인점하여 배치되어 상기 광자기 기록 매체에 제공될 자계를 발생 시키기 위한 자계 발생 수단을 구비하며, 상기 자계 발생 수단은 레이저 빔의 통과하는 평 판과 상기 평판상에 형성되어 자계를 발생시키기 위한 코일 패턴을 포함하는 것을 특징으로 하는 광자기 픽업 장치.A laser beam focusing means emitted from a laser beam emitting means on a magneto-optical recording medium, and magnetic field generating means for generating a magnetic field arranged to be provided to said magneto-optical recording medium in a manner located at said laser beam focusing means; The magnetic field generating means includes a flat plate passing through the laser beam and a coil pattern formed on the flat plate to generate a magnetic field. 제1항에 있어서, 상기 평판은 광전달 특성을 갖는 광유리 평판을 구비하는 것을 특징으로 하는 광자기 픽업 장치.The magneto-optical pick-up apparatus according to claim 1, wherein the flat plate comprises a light glass flat plate having light transmission characteristics. 제2항에 있어서, 상기 레이저 빔은 상기 레이저 빔 포커싱 수단에 의해서 상기 코일 패턴에 의해 발생된 자계의 거의 중앙에 포커스되는 것을 특징으로 하는 광자기 픽업 장치.3. The magneto-optical pickup device according to claim 2, wherein the laser beam is focused in the center of the magnetic field generated by the coil pattern by the laser beam focusing means. 제3항에 있어서, 상기 코일 패턴은 상기 평판의 표면상에 형성되고, 상기 표면은 상기 광자 기 기록 매체에 대향하는 것을 특징으로 하는 광자기 픽업 장치.4. The magneto-optical pickup device according to claim 3, wherein the coil pattern is formed on a surface of the flat plate, and the surface faces the magneto-optical recording medium. 제1항에 있어서, 상기 평판은 상기 레이저 빔 포커싱 수단과 상기 광자기 기록 매체 사이에 배치되는 것을 특징으로 하는 광자기 픽업 장치.The magneto-optical pickup device according to claim 1, wherein said flat plate is disposed between said laser beam focusing means and said magneto-optical recording medium. 제1항에 있어서, 비광 전달 물질을 구비하는 상기 평판은 레이저 빔의 레이다발이 모두 통과하는 개구를 가지며, 상기 개구는 상기 평판의 거의 중앙부에 형성되어 있는 것을 특징으로 하는 광자기 픽업 장치.2. The magneto-optical pick-up apparatus according to claim 1, wherein the flat plate having a non-light transmitting material has an opening through which all of the radar bundles of the laser beam pass, and the opening is formed in a substantially central portion of the flat plate. 제6항에 있어서, 상기 레이저 빔은 상기 레이저 빔 포커싱 수단에 의해서 상기 코일 패턴에 의해 발생된 자계의 거의 중앙에 포커스되는 것을 특징으로 하는 광자기 픽업 장치.7. The magneto-optical pickup device according to claim 6, wherein the laser beam is focused in the center of the magnetic field generated by the coil pattern by the laser beam focusing means. 제7항에 있어서, 상기 코일 패턴은 상기 평판의 표면상에 형성되고, 상기 표면은 상기 광자기 기록 매체에 대향하는 것을 특징으로 하는 광자기 픽업 장치.8. The magneto-optical pickup device according to claim 7, wherein the coil pattern is formed on a surface of the flat plate, and the surface faces the magneto-optical recording medium. 제8항에 있어서, 적어도 상기 평판의 표면부는 상기 광자기 기록 매체에 대향하며, 연자성 물질을 구비하는 것을 특징으로 하는 광자기 픽업 장치.9. The magneto-optical pickup device according to claim 8, wherein at least the surface portion of the plate faces the magneto-optical recording medium and comprises a soft magnetic material. 제6항에 있어서, 상기 평판은 상기 레이저 빔 포커싱 수단과 상기 광자기 기록 매체 사이에 배치되는 것을 특징으로 하는 광자기 픽업 장치.7. The magneto-optical pickup device according to claim 6, wherein the flat plate is disposed between the laser beam focusing means and the magneto-optical recording medium. 기록층과 기판의 양 표면상의 투명 보호 기판을 적층시켜 구성되며 광자기 픽업 장치를 포함하는 광자기 기록 매체를 기록/재생하기 위한 광자기 기록/재생 장치에 있어서, 레이저 빔 방출 수단으로부터 광자기 기록 매체상에 방출된 레이저 빔을 포커싱하기 위한 레이저 빔 포커싱 수단과, 상기 레이저 빔 수단에 인접하여 배치되어 상기 광자기 기록 매체에 제 공될 자계를 발생시키기 위한 자계 발생 수단을 구비하며, 상기 자계 발생 수단은 레이저 빔이 통과하는 평판과 상기 평판상에 형성되어 자게를 발생시키기 위한 코일 패턴을 포함하 는 것을 특징으로 하는 광자기 기록/재생 장치.A magneto-optical recording / reproducing apparatus for recording / reproducing a magneto-optical recording medium comprising a recording layer and transparent protective substrates on both surfaces of the substrate and including a magneto-optical pickup device, the magneto-optical recording from the laser beam emitting means A laser beam focusing means for focusing a laser beam emitted on a medium, and a magnetic field generating means for generating a magnetic field disposed adjacent to said laser beam means to be provided to said magneto-optical recording medium, said magnetic field generating means Is a plate through which a laser beam passes and a coil pattern formed on the plate to generate a magnetic force. 제11항에 있어서, 상기 광자기 픽업 장치는 상기 광자기 기록 매체의 양 표면측상에 배치된 것을 특징으로 하는 광자기 기록/재생 장치.The magneto-optical recording / reproducing apparatus according to claim 11, wherein the magneto-optical pickup device is disposed on both surface sides of the magneto-optical recording medium. 제12항에 있어서, 상기 광자기 기록 매체의 양 표면측상에 배치된 광자기 픽업 장치는 상기 광자기 기록 매체의 양 표면상에 기록/재생을 거의 동시에 수행하도록 거의 같이 작동하도록 구성된 것을 특징으로 하는 광자기 기록/재생 장치.13. The magneto-optical pickup device disposed on both surface sides of the magneto-optical recording medium is configured to operate almost simultaneously to perform recording / reproducing on both surfaces of the magneto-optical recording medium at about the same time. Magneto-optical recording / playback device. 고투자율층과 기판의 양 표면상의 투명 보호 기판을 적층시켜 구성되며 광학 픽업 장치를 포함하고, 광자기 기록 매체를 기록/재생하기 위한 광자기 기록/재생 장치에 있어서, 레이저 빔 방출 수단으로부터 광자기 기록 매체 상에 방출된 레이저 빔을 포커싱하기 위한 레이 저 빔 포커싱 수단과, 상기 레이저 빔 포커싱 수단에 인접하여 배치되고 상기 광자기 기록 매체에 제공될 자계를 발생시키기 위한 자계 발생 수단을 구비하며, 상기 자계 발생수단은 레이저 빔이 통과될 수 있는 평판과 상기 평판상에 형성되어 자계를 발생시키기 위한 코일 패턴을 포함하는 것을 특징으로 하는 광자기 기록/재생 장치.A magneto-optical recording / reproducing apparatus configured to laminate a high permeability layer and transparent protective substrates on both surfaces of a substrate and including an optical pickup device, wherein the magneto-optical recording / reproducing apparatus for recording / reproducing a magneto-optical recording medium, comprising: Laser beam focusing means for focusing a laser beam emitted on a recording medium, and magnetic field generating means for generating a magnetic field disposed adjacent said laser beam focusing means and to be provided to said magneto-optical recording medium; The magnetic field generating means includes a plate through which a laser beam can pass and a coil pattern formed on the plate to generate a magnetic field. 제14항에 있어서, 상기 광학 픽업 장치는 상기 광학 기록 매체의 양 표면측상에 배치된것을 특징으로 하는 광자기 기록/재생 장치.15. The magneto-optical recording / reproducing apparatus according to claim 14, wherein the optical pickup device is disposed on both surface sides of the optical recording medium. 제15항에 있어서, 상기 광자기 기록 매체의 양 표면측상에 배치된 광자기 픽업 장치는 상기 광자기 기록 매체의 양 표면상에 기록/재생을 거의 동시에 수행하도록 거의 같이 작동하도록 구성된 것을 특징으로 하는 광자기 기록/재생 장치.16. The magneto-optical pickup device disposed on both surface sides of the magneto-optical recording medium is configured to operate almost simultaneously to perform recording / reproducing on both surfaces of the magneto-optical recording medium at about the same time. Magneto-optical recording / playback device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900011464A 1989-07-29 1990-07-27 Magneto optical pickup apparatus and magneto optical recording/reproducing apparatus KR100225730B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP197349 1989-07-29
JP19734989 1989-07-29
JP2019989A JP2964517B2 (en) 1989-07-29 1990-01-30 Magneto-optical pickup device
JP19989 1990-01-30

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KR910003616A true KR910003616A (en) 1991-02-28
KR100225730B1 KR100225730B1 (en) 1999-10-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319519B1 (en) * 1997-12-17 2002-02-19 이형도 Fine Uneven Pattern Recognition and Readout Structure of Pickup Actuator
KR100704819B1 (en) * 2004-12-22 2007-04-10 후지쯔 가부시끼가이샤 Magnetic field generator and magneto-optical information storage device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319519B1 (en) * 1997-12-17 2002-02-19 이형도 Fine Uneven Pattern Recognition and Readout Structure of Pickup Actuator
KR100704819B1 (en) * 2004-12-22 2007-04-10 후지쯔 가부시끼가이샤 Magnetic field generator and magneto-optical information storage device

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JP2964517B2 (en) 1999-10-18
JPH03130951A (en) 1991-06-04
KR100225730B1 (en) 1999-10-15

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