ES2076777T3 - Dispositivo para exploracion optica. - Google Patents

Dispositivo para exploracion optica.

Info

Publication number
ES2076777T3
ES2076777T3 ES92917013T ES92917013T ES2076777T3 ES 2076777 T3 ES2076777 T3 ES 2076777T3 ES 92917013 T ES92917013 T ES 92917013T ES 92917013 T ES92917013 T ES 92917013T ES 2076777 T3 ES2076777 T3 ES 2076777T3
Authority
ES
Spain
Prior art keywords
data
optical
magneto
pits
magnetic layer
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
ES92917013T
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 ES2076777T3 publication Critical patent/ES2076777T3/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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • 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
    • G11B11/10595—Control of operating function
    • G11B11/10597—Adaptations for transducing various formats on the same or different carriers
    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas

Abstract

SOBRE UN SOPORTE DE DATOS OPTICO, QUE REPRESENTA UNA COMBINACION DE UN SOPORTE DE DATOS OPTICO Y UN SOPORTE DE DATOS MAGNETO-OPTICO, ESTAN GRABADOS DATOS TANTO POR MEDIO DE PITS COMO TAMBIEN EN UNA CAPA MAGNETICA UNOS SOBRE OTROS. POR MEDIO DE UN DISPOSITIVO DE EXPLORACION OPTICA APROPIADO, SE PUEDEN LEER SIMULTANEAMENTE CON AYUDA DE UN RAYO DE LUZ, TANTO LOS DATOS ARCHIVADOS POR MEDIO DE PITS COMO TAMBIEN LOS SITUADOS EN LA CAPA MAGNETICA. PARA SUPRIMIR LA DIAFONIA ENTRE LA SEÑAL DE DATOS (PS) OBTENIDA DE LOS PITS Y LA SEÑAL DE DATOS (MS) OBTENIDA DE LA CAPA MAGNETICA, ESTA PREVISTO UN MODULADOR ELECTRO-OPTICO (EOM), EL CUAL BARRE PERIODICAMENTE EN PARALELO Y EN VERTICAL A LA DIRECCION DE LA PISTA, EL VECTOR ELECTRICO (EV) DE LA LUZ ENFOCADA SOBRE EL SOPORTE DE DATOS (CD), CON UNA FRECUENCIA MUCHO MAYOR QUE LA FRECUENCIA DE LAS SEÑALES DE DATOS. EN LA SALIDA DE UN AMPLIFICADOR DIFERENCIAL (DV), EL CUAL GENERA LA SEÑAL MAGNETO-OPTICA (MS), ESTA PREVISTO UN PASO BAJO (TP) PARA FILTRAR FUERALA FRECUENCIA DE ROTACION DEL VECTOR ELECTRICO (EV) DE LA SEÑAL DE DATOS MAGNETO-OPTICA (MS). APLICACION EN APARATOS DE GRABACION Y REPRODUCCION MAGNETO-OPTICOS.
ES92917013T 1991-08-22 1992-08-13 Dispositivo para exploracion optica. Expired - Lifetime ES2076777T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4127840A DE4127840A1 (de) 1991-08-22 1991-08-22 Optische abtastvorrichtung

Publications (1)

Publication Number Publication Date
ES2076777T3 true ES2076777T3 (es) 1995-11-01

Family

ID=6438872

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92917013T Expired - Lifetime ES2076777T3 (es) 1991-08-22 1992-08-13 Dispositivo para exploracion optica.

Country Status (8)

Country Link
US (1) US5459707A (es)
EP (1) EP0599901B1 (es)
JP (1) JP3623959B2 (es)
KR (1) KR100251898B1 (es)
DE (2) DE4127840A1 (es)
ES (1) ES2076777T3 (es)
HK (1) HK67896A (es)
WO (1) WO1993004471A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001004361A2 (en) 1999-07-09 2001-01-18 Gen-Probe Incorporated Detection of hiv-1 by nucleic acid amplification
SE521903C2 (sv) * 1999-08-12 2003-12-16 Ericsson Telefon Ab L M Förfarande och anordning för opto-elektronisk A/D-omvandling
US6977775B2 (en) * 2002-05-17 2005-12-20 Sharp Kabushiki Kaisha Method and apparatus for crystallizing semiconductor with laser beams
JP2003332257A (ja) * 2002-05-17 2003-11-21 Fujitsu Ltd 半導体結晶化方法及び装置
JP2007110064A (ja) 2005-09-14 2007-04-26 Ishikawajima Harima Heavy Ind Co Ltd レーザアニール方法及び装置
CN111098034A (zh) * 2019-12-16 2020-05-05 大族激光科技产业集团股份有限公司 一种多层材料产品标记装置及方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160270A (en) * 1977-09-22 1979-07-03 Rca Corporation Tracking servo system for video disc player/recorder
US4264986A (en) * 1979-03-12 1981-04-28 Willis Craig I Information-recording process & apparatus
EP0229035B1 (en) * 1986-01-08 1993-08-18 Victor Company Of Japan, Limited Optical recording/reproducing of information signals
DE3732874A1 (de) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh Optische abtastvorrichtung
US5325350A (en) * 1986-09-28 1994-06-28 Deutsche Thomson-Brandt Gmbh Pick-up for selectively reading and writing an optical recording medium having pits and magnetic domains
US5258968A (en) * 1986-12-11 1993-11-02 Pioneer Electronic Corporation Tracking error signal generating device for preventing offset of the generated tracking error signal
DE3732875A1 (de) * 1987-09-30 1989-04-20 Thomson Brandt Gmbh Optischer aufzeichnungstraeger
JP2757494B2 (ja) * 1989-09-29 1998-05-25 ブラザー工業株式会社 走査露光装置
DE69028908T2 (de) * 1989-12-28 1997-05-07 Sanyo Electric Co Aufzeichnungs- und Wiedergabeverfahren
US5245465A (en) * 1990-08-04 1993-09-14 Canon Kabushiki Kaisha Optical polarization-state converting apparatus for use as isolator, modulator and the like

Also Published As

Publication number Publication date
DE59202753D1 (de) 1995-08-03
HK67896A (en) 1996-04-26
EP0599901A1 (de) 1994-06-08
JPH06510153A (ja) 1994-11-10
EP0599901B1 (de) 1995-06-28
US5459707A (en) 1995-10-17
KR100251898B1 (ko) 2000-05-01
DE4127840A1 (de) 1993-02-25
JP3623959B2 (ja) 2005-02-23
WO1993004471A1 (de) 1993-03-04

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