DE3675826D1 - Optischer speicher mit bemusterter spurnachlaufsteuerung fuer einen vorgepraegten informationstraeger. - Google Patents

Optischer speicher mit bemusterter spurnachlaufsteuerung fuer einen vorgepraegten informationstraeger.

Info

Publication number
DE3675826D1
DE3675826D1 DE8686108751T DE3675826T DE3675826D1 DE 3675826 D1 DE3675826 D1 DE 3675826D1 DE 8686108751 T DE8686108751 T DE 8686108751T DE 3675826 T DE3675826 T DE 3675826T DE 3675826 D1 DE3675826 D1 DE 3675826D1
Authority
DE
Germany
Prior art keywords
optical storage
information carrier
track control
stamped information
patterned track
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
DE8686108751T
Other languages
English (en)
Inventor
Carvennec Francois Le
Daniel Lecomte
Dominique Leterme
Rene Romeas
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.)
Technicolor SA
Original Assignee
Thomson SA
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 Thomson SA filed Critical Thomson SA
Application granted granted Critical
Publication of DE3675826D1 publication Critical patent/DE3675826D1/de
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
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/128—Modulators
    • 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
    • G11B11/10502—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 characterised by the transducing operation to be executed
    • 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
    • G11B11/10595—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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
DE8686108751T 1985-06-28 1986-06-26 Optischer speicher mit bemusterter spurnachlaufsteuerung fuer einen vorgepraegten informationstraeger. Expired - Lifetime DE3675826D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR858509856A FR2584223B1 (fr) 1985-06-28 1985-06-28 Memoire optique a suivi de piste echantillonne pour support d'information pregrave.

Publications (1)

Publication Number Publication Date
DE3675826D1 true DE3675826D1 (de) 1991-01-10

Family

ID=9320751

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686108751T Expired - Lifetime DE3675826D1 (de) 1985-06-28 1986-06-26 Optischer speicher mit bemusterter spurnachlaufsteuerung fuer einen vorgepraegten informationstraeger.

Country Status (6)

Country Link
US (1) US4868804A (de)
EP (1) EP0208212B1 (de)
JP (1) JPH0738258B2 (de)
CA (1) CA1263893A (de)
DE (1) DE3675826D1 (de)
FR (1) FR2584223B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229268A (en) * 1989-02-27 1990-09-19 Philips Nv Radiation emitting arrangement monitoring and controlling system
JP2934264B2 (ja) * 1989-11-02 1999-08-16 シャープ株式会社 光ピックアップ
US5420848A (en) * 1990-08-02 1995-05-30 Canon Kabushiki Kaisha Optical system for optical information recording/reproducing apparatus having a galvano mirror
US5383175A (en) * 1992-12-17 1995-01-17 International Business Machines Corporation Laser power control with defocusing offset during data recording
EP0686298B1 (de) * 1993-12-23 2000-05-17 Thomson-Csf Verfahren und optisches system zur aufzeichnung/wiedergabe von information auf einem aufzeichnungsmedium
FR2787232B1 (fr) 1998-12-15 2001-02-23 Thomson Csf Disque d'enregistrement optique anti-piratage et procede de lecture d'un tel disque
US6407861B1 (en) * 1999-04-06 2002-06-18 Adc Telecommunications, Inc. Adjustable optical circulator
FR2805071B1 (fr) 2000-02-11 2002-05-03 Moulage Plastique De L Ouest Disque optique protege contre la copie et procede de protection pour un tel disque
US6658438B1 (en) * 2000-08-14 2003-12-02 Matrix Semiconductor, Inc. Method for deleting stored digital data from write-once memory device

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696344A (en) * 1970-02-19 1972-10-03 Energy Conversion Devices Inc Optical mass memory employing amorphous thin films
US3753608A (en) * 1971-04-15 1973-08-21 Honeywell Inc Optical polarization spot size changing devices
US3983317A (en) * 1974-12-09 1976-09-28 Teletype Corporation Astigmatizer for laser recording and reproducing system
DE2522405C2 (de) * 1975-05-21 1982-04-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information
NL187413C (nl) * 1978-03-16 1991-09-16 Philips Nv Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager.
JPS6049977B2 (ja) * 1980-04-23 1985-11-06 松下電器産業株式会社 光デイスク装置
US4406520A (en) * 1980-08-14 1983-09-27 Universal Pioneer Corporation Beam splitter optical system of signal pickup device
JPS5768813A (en) * 1980-10-17 1982-04-27 Matsushita Electric Ind Co Ltd Optical information reader
JPS5771537A (en) * 1980-10-20 1982-05-04 Mitsubishi Electric Corp Optical pickup device
JPS5850605A (ja) * 1981-09-19 1983-03-25 Canon Inc 熱磁気記録方式
US4447772A (en) * 1981-09-25 1984-05-08 Motorola Inc. Temperature stable pulse counting FM detector
JPS5894143A (ja) * 1981-12-01 1983-06-04 Matsushita Electric Ind Co Ltd 光学的記録再生装置
EP0083452B1 (de) * 1982-01-06 1987-04-01 Hitachi, Ltd. Regelkreis zur Regelung der Lichtquelle in einem optischen Plattenspeicher
FR2523350B1 (fr) * 1982-03-09 1987-05-22 Thomson Csf Tete optique dans un dispositif d'enregistrement-lecture d'un support d'information
FR2523349A1 (fr) * 1982-03-12 1983-09-16 Thomson Csf Procede et dispositif optique de generation de signaux d'asservissements de la position d'une tache d'exploration des pistes d'un support d'information
US4451914A (en) * 1982-04-15 1984-05-29 Burroughs Corporation Optical storage system employing a multi-layer optical medium
FR2528605B1 (fr) * 1982-06-15 1987-11-20 Thomson Csf Procede et dispositif optique de focalisation d'un faisceau d'energie lumineuse sur un plan de reference d'un support d'information ainsi que ce support
DE3382020D1 (de) * 1982-07-15 1991-01-10 Matsushita Electric Ind Co Ltd Kopf zum optischen aufzeichnen und wiedergeben.
JPS5968844A (ja) * 1982-10-14 1984-04-18 Matsushita Electric Ind Co Ltd 光学的可逆記録再生装置
JPS59191149A (ja) * 1983-04-14 1984-10-30 Sanyo Electric Co Ltd 光学記録制御機構
JPS59221849A (ja) * 1983-05-30 1984-12-13 Fujitsu Ltd 逆バイアス電圧印加型光検出器の光検出回路
DE3571356D1 (en) * 1984-03-24 1989-08-10 Sony Corp Optical disk player
JPS60239929A (ja) * 1984-05-15 1985-11-28 Matsushita Electric Ind Co Ltd 光学的記録再生装置
US4695994A (en) * 1985-04-05 1987-09-22 Laser Magnetic Storage International Company Method and apparatus for varying laser intensity level

Also Published As

Publication number Publication date
US4868804A (en) 1989-09-19
CA1263893A (en) 1989-12-12
EP0208212A1 (de) 1987-01-14
JPS6214343A (ja) 1987-01-22
FR2584223B1 (fr) 1994-06-17
JPH0738258B2 (ja) 1995-04-26
EP0208212B1 (de) 1990-11-28
FR2584223A1 (fr) 1987-01-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition