DE69124150D1 - Einrichtung zum Einschreiben und/oder Auslesen eines magnetoptischen Informationsträgers - Google Patents

Einrichtung zum Einschreiben und/oder Auslesen eines magnetoptischen Informationsträgers

Info

Publication number
DE69124150D1
DE69124150D1 DE69124150T DE69124150T DE69124150D1 DE 69124150 D1 DE69124150 D1 DE 69124150D1 DE 69124150 T DE69124150 T DE 69124150T DE 69124150 T DE69124150 T DE 69124150T DE 69124150 D1 DE69124150 D1 DE 69124150D1
Authority
DE
Germany
Prior art keywords
writing
magnet
optical information
reading out
information carrier
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69124150T
Other languages
English (en)
Other versions
DE69124150T2 (de
Inventor
Johannes Martinus Mari Hensing
Cornelius Anthonius Hezemans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 Philips Electronics NV filed Critical Philips Electronics NV
Publication of DE69124150D1 publication Critical patent/DE69124150D1/de
Application granted granted Critical
Publication of DE69124150T2 publication Critical patent/DE69124150T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G11B11/10532—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
    • G11B11/1055—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
    • G11B11/10573—Control of relative positioning of the magnetic and optical transducers, e.g. to move simultaneously
DE69124150T 1990-07-06 1991-07-02 Einrichtung zum Einschreiben und/oder Auslesen eines magnetoptischen Informationsträgers Expired - Fee Related DE69124150T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9001546A NL9001546A (nl) 1990-07-06 1990-07-06 Inrichting voor het inschrijven en/of uitlezen van een magneto-optische informatiedrager.

Publications (2)

Publication Number Publication Date
DE69124150D1 true DE69124150D1 (de) 1997-02-27
DE69124150T2 DE69124150T2 (de) 1997-07-10

Family

ID=19857378

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69124150T Expired - Fee Related DE69124150T2 (de) 1990-07-06 1991-07-02 Einrichtung zum Einschreiben und/oder Auslesen eines magnetoptischen Informationsträgers

Country Status (8)

Country Link
US (1) US5191562A (de)
EP (1) EP0464947B1 (de)
JP (1) JPH04229436A (de)
KR (1) KR920003275A (de)
DE (1) DE69124150T2 (de)
ES (1) ES2099128T3 (de)
MY (1) MY107575A (de)
NL (1) NL9001546A (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3393655B2 (ja) * 1992-02-27 2003-04-07 パイオニア株式会社 光ディスクプレーヤ
EP0564148B1 (de) * 1992-03-31 1998-07-22 Canon Kabushiki Kaisha Magnetkopfverwendende magneto-optische Informationsaufnahme und -wiedergabegerät und -verfahren
US5408455A (en) * 1992-04-08 1995-04-18 Asahi Kogaku Kogyo Kabushiki Kaisha Control device for head unit having optical head and multiple magnetic heads
US5495455A (en) * 1992-04-28 1996-02-27 Sony Corporation Magneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired position
US5297122A (en) * 1992-09-14 1994-03-22 Hewlett-Packard Company Dust protection assembly for magneto-optic drive apparatus
US5416753A (en) * 1992-11-16 1995-05-16 Asahi Kogaku Kogyo Kabushiki Kaisha Magneto-optical disk drive system with head position adjustability
US5666333A (en) * 1995-04-07 1997-09-09 Discovision Associates Biasing level controller for magneto-optical recording device
JP2001507496A (ja) * 1997-10-06 2001-06-05 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 記録媒体への情報の読み書き装置
JP3579616B2 (ja) * 1999-06-21 2004-10-20 ペンタックス株式会社 磁気ヘッド昇降機構
US7933191B2 (en) * 2006-10-27 2011-04-26 Van Brocklin Andrew L Optical disc drive having two optomechanical mechanisms

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522405C2 (de) * 1975-05-21 1982-04-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information
US4327434A (en) * 1980-01-28 1982-04-27 Rca Corporation Video disc stylus position sensor system
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
US4843600A (en) * 1985-09-13 1989-06-27 Canon Kabushiki Kaisha Recording head for magneto-optical information recording apparatus
JP2574747B2 (ja) * 1985-11-20 1997-01-22 株式会社日立製作所 光磁気記録装置
US4870635A (en) * 1986-09-19 1989-09-26 International Business Machines Corporation Precision measurement and positioning system for disk storage system
US4789972A (en) * 1986-12-22 1988-12-06 International Business Machines Corporation Selectively controlling the erasure in a magneto-optic recording medium
JPS63177304A (ja) * 1987-01-16 1988-07-21 Sanyo Electric Co Ltd 光磁気情報記録装置の外部磁界印加装置
JPS6479942A (en) * 1987-09-21 1989-03-24 Toshiba Corp Information processor
EP0555943B1 (de) * 1988-04-06 1996-06-19 Mitsubishi Denki Kabushiki Kaisha Optischer Abstandsdetektor
JPH01287849A (ja) * 1988-05-13 1989-11-20 Tokyo Electric Co Ltd 光磁気デイスク装置
JP2624793B2 (ja) * 1988-08-12 1997-06-25 株式会社東芝 Ｐｗｍ昇圧コンバータの制御装置
JPH02220273A (ja) * 1989-02-21 1990-09-03 Pioneer Electron Corp ディスク演奏装置におけるスライダー制御装置
NL8900752A (nl) * 1989-03-28 1990-10-16 Philips Nv Inrichting voor het inschrijven en/of uitlezen van een magneto-optische informatiedrager.
NL8900751A (nl) * 1989-03-28 1990-10-16 Philips Nv Inrichting voor het inschrijven en/of uitlezen van een magneto-optische informatiedrager.
JPH07118106B2 (ja) * 1990-03-08 1995-12-18 パイオニア株式会社 光磁気記録再生装置

Also Published As

Publication number Publication date
NL9001546A (nl) 1992-02-03
EP0464947B1 (de) 1997-01-15
KR920003275A (ko) 1992-02-29
EP0464947A1 (de) 1992-01-08
DE69124150T2 (de) 1997-07-10
MY107575A (en) 1996-04-30
JPH04229436A (ja) 1992-08-18
US5191562A (en) 1993-03-02
ES2099128T3 (es) 1997-05-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee