ES2079429T3 - Dispositivo para grabar y/o leer un soporte de informacion magnetico-optico. - Google Patents

Dispositivo para grabar y/o leer un soporte de informacion magnetico-optico.

Info

Publication number
ES2079429T3
ES2079429T3 ES90200676T ES90200676T ES2079429T3 ES 2079429 T3 ES2079429 T3 ES 2079429T3 ES 90200676 T ES90200676 T ES 90200676T ES 90200676 T ES90200676 T ES 90200676T ES 2079429 T3 ES2079429 T3 ES 2079429T3
Authority
ES
Spain
Prior art keywords
magnetic
coil
move
magnetic unit
unit
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 - Lifetime
Application number
ES90200676T
Other languages
English (en)
Inventor
Cornelius Antonius Hezemans
Johannes Martinus Mari Hensing
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
Application granted granted Critical
Publication of ES2079429T3 publication Critical patent/ES2079429T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
    • G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
    • 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
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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

Abstract

LA INVENCION SE REFIERE A UN DISPOSITIVO PARA INSDRIBIR Y/O LEER UN DISCO (7) MAGNETO-OPTICO. EL DISPOSITIVO COMPRENDE: UN BASTIDOR QUE LLEVA UNA PLATAFORMA GIRATORIA, QUE GIRA ALREDEDOR DE UN EJE DE ROTACION (11); UNA UNIDAD OPTICA (19), QUE COMPRENDE UN OBJETIVO (21) Y UN ACTUADOR PARA MOVER EL OBJETIVO EN UNA DIRECCION PARALELA AL CITADO EJE DE ROTACION, Y, VISTO A LO LARGO DEL CITADO EJE DE ROTACION, UNA UNIDAD (59) MAGNETICA, QUE ESTA SITUADA EN OPOSICION A, Y ESPACIADA DE, LA UNIDAD OPTICA. LA UNIDAD OPTICA Y LA UNIDAD MAGNETICA PUEDEN DESPLAZARSE EN UN PLANO QUE SE ORIENTA TRANSVERSALMENTE RESPECTO AL CITADO EJE DE ROTACION. LA UNIDAD MAGNETICA COMPRENDE UNA BOBINA (131), SITUADA SOBRE UN FORMERO PARA DEVANAR BOBINAS (129), Y UN POSTERIOR ACTUADOR (24) PARA DESPLAZAR LA BOBINA EN UNA DIRECCION PARALELA AL EJE DE ROTACION DE LA PLATAFORMA GIRATORIA. EL DISPOSITIVO COMPRENDE ADEMAS UN SISTEMA DE MEDICION Y CONTROL PARA DETECTAR, DURANTE EL FUNCIONAMIENTO DEL DISPOSITIVO, LA DISTANCIA ENTRE UN PLANO (R) DE REFERENCIA DE LA UNIDAD MAGNETICA Y EL DISCO MAGNETO-OPTICO, Y PARA CONTROLAR LA POSICION DE LA BOBINA.
ES90200676T 1989-03-28 1990-03-22 Dispositivo para grabar y/o leer un soporte de informacion magnetico-optico. Expired - Lifetime ES2079429T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8900752A NL8900752A (nl) 1989-03-28 1989-03-28 Inrichting voor het inschrijven en/of uitlezen van een magneto-optische informatiedrager.

Publications (1)

Publication Number Publication Date
ES2079429T3 true ES2079429T3 (es) 1996-01-16

Family

ID=19854365

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90200676T Expired - Lifetime ES2079429T3 (es) 1989-03-28 1990-03-22 Dispositivo para grabar y/o leer un soporte de informacion magnetico-optico.

Country Status (9)

Country Link
EP (1) EP0390260B1 (es)
JP (1) JPH02281445A (es)
KR (1) KR900015095A (es)
CS (1) CS142590A3 (es)
DE (1) DE69022457T2 (es)
ES (1) ES2079429T3 (es)
HK (1) HK168796A (es)
NL (1) NL8900752A (es)
RU (1) RU2067321C1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9001546A (nl) * 1990-07-06 1992-02-03 Philips Nv Inrichting voor het inschrijven en/of uitlezen van een magneto-optische informatiedrager.
JP2813261B2 (ja) * 1992-02-14 1998-10-22 シャープ株式会社 光磁気ディスク用磁気ヘッド装置及び光磁気記録再生装置
JP3146683B2 (ja) * 1992-10-14 2001-03-19 ソニー株式会社 光磁気ディスク記録再生装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6455766A (en) * 1987-08-26 1989-03-02 Nec Corp Magneto-optical recording, reproducing and erasing device
JPS6466848A (en) * 1987-09-07 1989-03-13 Hitachi Ltd Magneto-optical recording/reproducing device
JPS6468814A (en) * 1987-09-10 1989-03-14 Canon Kk Method and device for position control of moving object

Also Published As

Publication number Publication date
EP0390260A1 (en) 1990-10-03
CS142590A3 (en) 1992-07-15
NL8900752A (nl) 1990-10-16
DE69022457T2 (de) 1996-04-25
KR900015095A (ko) 1990-10-25
EP0390260B1 (en) 1995-09-20
HK168796A (en) 1996-09-20
DE69022457D1 (de) 1995-10-26
JPH02281445A (ja) 1990-11-19
RU2067321C1 (ru) 1996-09-27

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