ES2057914T3 - Dispositivo de exploracion optica. - Google Patents

Dispositivo de exploracion optica.

Info

Publication number
ES2057914T3
ES2057914T3 ES91914782T ES91914782T ES2057914T3 ES 2057914 T3 ES2057914 T3 ES 2057914T3 ES 91914782 T ES91914782 T ES 91914782T ES 91914782 T ES91914782 T ES 91914782T ES 2057914 T3 ES2057914 T3 ES 2057914T3
Authority
ES
Spain
Prior art keywords
signals
data
optical
ray
photodetectors
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
ES91914782T
Other languages
English (en)
Inventor
Yasuaki Morimoto
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Application granted granted Critical
Publication of ES2057914T3 publication Critical patent/ES2057914T3/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
    • 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
    • G11B11/10541—Heads for reproducing
    • 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
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

LOS DATOS SON REGISTRADOS UNOS SOBRE OTROS POR MEDIO DE SEÑALES EN UNPORTADOR DE REGISTRO MAGNETICO SOBRE UN MEDIO DE REGISTRO OPTICO QUE CONSISTE EN UNA COMBINACION DE MEDIOS DE REGISTRO OPTICOS Y MAGETOOPTICOS. LOS DATOS MENCIONADOS PUEDEN SER LEIDOS UTILIZANDO UN EXPLORADOR OPTICO ADECUADO CON UN RAYO DE LUZ. PARA EVITAR LA INTERFERENCIA ENTRE LA SEÑAL (PS) DE DATOS OBTENIDAS DE LAS SEÑALES Y LA SEÑAL (MS) DE DATOS OBTENIDA DE LA CAPA DE REGISTRO MAGNETICA, DOS RAYOS (VL, HL) DE LUZ POLARIZADOS EN ANGULOS RECTO UNO CON RESPECTO A OTRO SON ENFOCADOS A UNA DISTANCIA (X) PREDETERMINADA DE FORMA SEPARADA SOBRE UN MEDIO (AT) DE REGISTRO, QUE REFLEJA CADA RAYO SOBRE UNO DE LOS CUATRO FOTODETECTORES (VP, E, F, G) DEPENDIENDO DE SU DIRECCION DE POLARIZACION. LAS SEÑALES DE DATOS (PS, MS) Y LAS SEÑALES (FE, TE) DE CONTROL PARA EL CONTROL DE ENFOQUE Y EL CIRCUITO DE CONTROL DE PISTA SE OBTIENEN A PARTIR DE LAS SEÑALES DE SALIDA DE LOS MENCIONADO FOTODETECTORES. SE DESCRIBEN APLICACIONES PARA EQUIPOS DE REGISTRO MEGNETOOPTICO Y DE REPRODUCCION.
ES91914782T 1990-08-25 1991-08-16 Dispositivo de exploracion optica. Expired - Lifetime ES2057914T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4026875A DE4026875A1 (de) 1990-08-25 1990-08-25 Optische abtastvorrichtung

Publications (1)

Publication Number Publication Date
ES2057914T3 true ES2057914T3 (es) 1994-10-16

Family

ID=6412880

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91914782T Expired - Lifetime ES2057914T3 (es) 1990-08-25 1991-08-16 Dispositivo de exploracion optica.

Country Status (11)

Country Link
US (1) US5406542A (es)
EP (1) EP0544731B1 (es)
JP (1) JP3594594B2 (es)
KR (1) KR100225305B1 (es)
DE (2) DE4026875A1 (es)
ES (1) ES2057914T3 (es)
HK (1) HK106195A (es)
HU (1) HUT64638A (es)
MY (1) MY107859A (es)
SG (1) SG26379G (es)
WO (1) WO1992003821A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9300774A (nl) * 1992-05-13 1993-12-01 Gold Star Co Optische opneeminrichting.
JPH07147020A (ja) * 1993-11-24 1995-06-06 Canon Inc 複数ビーム光ヘッド
JP2738337B2 (ja) * 1995-03-31 1998-04-08 日本電気株式会社 光再生媒体の再生方法及び再生装置
DE19643105A1 (de) * 1996-10-21 1998-04-23 Thomson Brandt Gmbh Gerät zum Lesen oder Beschreiben eines optischen Aufzeichnungsträgers
US6292441B1 (en) * 1997-04-16 2001-09-18 Matsushita Electric Industrial Co., Ltd. Optical head device, optical information apparatus, and method for detecting focus error signal
DE19723542A1 (de) * 1997-06-05 1998-12-10 Thomson Brandt Gmbh Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger
DE19756457A1 (de) 1997-12-18 1999-06-24 Thomson Brandt Gmbh Verfahren zur Korrektur eines Spurfehlersignals beim optischen Abtasten eines plattenförmigen Aufzeichnungsträgers
EP0951014A3 (en) * 1998-04-14 2000-02-23 Deutsche Thomson-Brandt Gmbh Device for reading from or writting to optical recording media
DE19825208A1 (de) * 1998-04-14 1999-10-21 Thomson Brandt Gmbh Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger
KR100906472B1 (ko) * 2002-05-21 2009-07-08 삼성전자주식회사 다중 검출기를 이용한 광기록매체 데이터 재생 장치
EP1554720A2 (en) * 2002-10-15 2005-07-20 Koninklijke Philips Electronics N.V. Optical scanning device
KR20070005001A (ko) * 2004-04-30 2007-01-09 코닌클리케 필립스 일렉트로닉스 엔.브이. 전용 포커스 트랙킹 빔을 사용하는 광학 판독장치/기록장치
KR100951110B1 (ko) * 2007-11-26 2010-04-07 케이맥(주) 라인스캔방식 고분해능 편광측정장치
EP2141699A1 (en) * 2008-06-30 2010-01-06 Deutsche Thomson OHG Apparatus for reading from an optical recording medium
US9506015B2 (en) 2014-11-21 2016-11-29 Ecolab Usa Inc. Compositions to boost fabric softener performance

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483664B1 (fr) * 1980-05-28 1985-06-28 Thomson Csf Dispositif optique d'enregistrement-lecture sur un support d'informations et systeme de memoire optique comprenant un tel dispositif
US4858218A (en) * 1984-09-12 1989-08-15 Nikon Corporation Optical recording medium and reproducing apparatus
JPS61199254A (ja) * 1985-02-27 1986-09-03 ゼロツクス　コ−ポレ−シヨン 光デイスク装置
FR2613866B1 (fr) * 1987-04-07 1994-01-14 Mitsubishi Denki Kk Appareil d'enregistrement et de reproduction optique d'information
DE3732875A1 (de) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh Optischer aufzeichnungstraeger
DE3732944A1 (de) * 1987-09-30 1989-04-13 Thomson Brandt Gmbh Optische abtastvorrichtung
US5073888A (en) * 1988-04-21 1991-12-17 Ricoh Company, Ltd. Optical pickup device

Also Published As

Publication number Publication date
WO1992003821A1 (de) 1992-03-05
US5406542A (en) 1995-04-11
KR930701808A (ko) 1993-06-12
SG26379G (en) 1995-09-18
JPH06500192A (ja) 1994-01-06
KR100225305B1 (ko) 1999-10-15
EP0544731B1 (de) 1994-06-29
MY107859A (en) 1996-06-29
DE4026875A1 (de) 1992-02-27
EP0544731A1 (de) 1993-06-09
JP3594594B2 (ja) 2004-12-02
HU9203592D0 (en) 1993-03-01
HK106195A (en) 1995-07-07
DE59102083D1 (de) 1994-08-04
HUT64638A (en) 1994-01-28

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