FR2399088A1 - Appareil et procede pour restituer un signal module en frequence emmagasine sur un element de stockage d'informations - Google Patents

Appareil et procede pour restituer un signal module en frequence emmagasine sur un element de stockage d'informations

Info

Publication number
FR2399088A1
FR2399088A1 FR7824958A FR7824958A FR2399088A1 FR 2399088 A1 FR2399088 A1 FR 2399088A1 FR 7824958 A FR7824958 A FR 7824958A FR 7824958 A FR7824958 A FR 7824958A FR 2399088 A1 FR2399088 A1 FR 2399088A1
Authority
FR
France
Prior art keywords
restituting
information storage
frequency signal
storage element
signal stored
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.)
Granted
Application number
FR7824958A
Other languages
English (en)
Other versions
FR2399088B1 (fr
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.)
Discovision Associates
Original Assignee
MCA Discovision Inc
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 MCA Discovision Inc filed Critical MCA Discovision Inc
Publication of FR2399088A1 publication Critical patent/FR2399088A1/fr
Application granted granted Critical
Publication of FR2399088B1 publication Critical patent/FR2399088B1/fr
Granted 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0327—Operation of the cell; Circuit arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1612—Error detection by comparing the output signals of redundant hardware where the redundant component is persistent storage
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/06—Angle-modulation recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/22—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing distortions
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • 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
    • G11B7/08—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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • 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
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/048—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using other optical storage elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Quality & Reliability (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Television Signal Processing For Recording (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

L'invention concerne les appareils d'écriture et de lecture d'informations vidéo. Elle se rapporte à un appareil destiné à faire tourner un disque 18 sur lequel un objectif 14 permet l'écriture d'informations par un faisceau laser d'une source 30, le faisceau passant dans une cellule 32 de Pockels et dans un prisme 38 de Glan, la cellule 32 étant modulée par l'information vidéo à reproduire sur le disque 18. Application de disques vidéo.
FR7824958A 1973-02-20 1978-08-29 Appareil et procede pour restituer un signal module en frequence emmagasine sur un element de stockage d'informations Granted FR2399088A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33356073A 1973-02-20 1973-02-20

Publications (2)

Publication Number Publication Date
FR2399088A1 true FR2399088A1 (fr) 1979-02-23
FR2399088B1 FR2399088B1 (fr) 1982-12-03

Family

ID=23303311

Family Applications (6)

Application Number Title Priority Date Filing Date
FR7401660A Expired FR2218612B1 (fr) 1973-02-20 1974-01-17
FR7824956A Granted FR2399086A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour emmagasiner des informations sous la forme d'un signal module en frequence sur un element de stockage d'informations
FR7824958A Granted FR2399088A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour restituer un signal module en frequence emmagasine sur un element de stockage d'informations
FR7824960A Granted FR2399090A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour stabiliser l'emmagasinage d'informations video sur une surface d'enregistrement
FR7824957A Granted FR2399087A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour emmagasiner et restituer des informations sous la forme d'un signal module en frequence sur un element de stockage d'information
FR7824959A Granted FR2399089A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour controler l'emmagasinage d'informations video sur un element de stockage d'informations

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FR7401660A Expired FR2218612B1 (fr) 1973-02-20 1974-01-17
FR7824956A Granted FR2399086A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour emmagasiner des informations sous la forme d'un signal module en frequence sur un element de stockage d'informations

Family Applications After (3)

Application Number Title Priority Date Filing Date
FR7824960A Granted FR2399090A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour stabiliser l'emmagasinage d'informations video sur une surface d'enregistrement
FR7824957A Granted FR2399087A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour emmagasiner et restituer des informations sous la forme d'un signal module en frequence sur un element de stockage d'information
FR7824959A Granted FR2399089A1 (fr) 1973-02-20 1978-08-29 Appareil et procede pour controler l'emmagasinage d'informations video sur un element de stockage d'informations

Country Status (7)

Country Link
JP (12) JPS502415A (fr)
CA (1) CA1013854A (fr)
DE (6) DE2403408C3 (fr)
FR (6) FR2218612B1 (fr)
GB (1) GB1462791A (fr)
IT (1) IT1008245B (fr)
NL (5) NL7402289A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005316A1 (fr) * 1978-03-27 1979-11-14 Discovision Associates Appareil optique et procédé d'enregistrement d'information et support d'enregistrement formé par cet appareil; appareil optique pour recouvrer l'information enregistrée

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US4225873A (en) * 1978-03-27 1980-09-30 Mca Disco-Vision, Inc. Recording and playback system
CA1074005A (fr) * 1975-03-10 1980-03-18 James T. Russell Systeme d'enregistrement et de lecture
AU520835B2 (en) * 1977-03-24 1982-03-04 World Development Laboratories Optical recording system and method
NL7802860A (nl) * 1978-03-16 1979-09-18 Philips Nv Registratiedragerlichaam en registratiedrager voor optische informatie en inrichting voor het inschrijven en uitlezen.
NL7901228A (nl) * 1978-03-27 1979-10-01 Mca Disco Vision Moedermachine.
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DK153609C (da) * 1978-09-22 1988-12-19 Discovision Ass Fremgangsmaade og apparat til skrivning af et signalinformationsspor paa en plade
DK153610C (da) * 1978-09-22 1988-12-12 Discovision Ass Fremgangsmaade til skrivning af et informationsspor paa en plade
CH636467A5 (en) * 1978-10-17 1983-05-31 Mca Disco Vision Method and device for recording a modulated electrical signal
BE871326A (fr) * 1978-10-23 1979-04-17 Mca Disco Vision Procede et dispositif d'enregistrement et de reproduction d'un signal video.
JPS605926B2 (ja) * 1978-11-22 1985-02-14 三菱電機株式会社 光変調装置
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US6141300A (en) 1989-06-20 2000-10-31 Discovision Associates Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
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US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US6069857A (en) 1991-02-15 2000-05-30 Discovision Associates Optical disc system having improved circuitry for performing blank sector check on readable disc
US5729511A (en) 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US5677899A (en) 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005316A1 (fr) * 1978-03-27 1979-11-14 Discovision Associates Appareil optique et procédé d'enregistrement d'information et support d'enregistrement formé par cet appareil; appareil optique pour recouvrer l'information enregistrée

Also Published As

Publication number Publication date
JPS5525892A (en) 1980-02-23
FR2218612A1 (fr) 1974-09-13
NL7402289A (fr) 1974-08-22
FR2399089A1 (fr) 1979-02-23
FR2399087B1 (fr) 1982-12-03
IT1008245B (it) 1976-11-10
FR2399088B1 (fr) 1982-12-03
DE2403408A1 (de) 1974-08-29
FR2399090A1 (fr) 1979-02-23
JPS5525890A (en) 1980-02-23
FR2399086B1 (fr) 1982-12-03
DE2463376C2 (de) 1985-10-17
FR2399086A1 (fr) 1979-02-23
DE2462833C2 (de) 1983-02-10
GB1462791A (en) 1977-01-26
NL8800806A (nl) 1988-07-01
CA1013854A (en) 1977-07-12
JPS58161143A (ja) 1983-09-24
JPS5525889A (en) 1980-02-23
JPS6338771B2 (fr) 1988-08-02
JPS6224440A (ja) 1987-02-02
JPS5732412B2 (fr) 1982-07-10
JPS502415A (fr) 1975-01-11
JPS6224441A (ja) 1987-02-02
JPS58161153A (ja) 1983-09-24
FR2399087A1 (fr) 1979-02-23
FR2399090B1 (fr) 1982-12-03
JPS5525888A (en) 1980-02-23
JPS5732411B2 (fr) 1982-07-10
DE2403408B2 (de) 1978-06-29
NL8800809A (nl) 1988-07-01
DE2462835C2 (de) 1983-03-24
FR2399089B1 (fr) 1982-12-03
JPS6235170B2 (fr) 1987-07-31
JPS5525891A (en) 1980-02-23
DE2462831C2 (de) 1983-03-24
JPS58161159A (ja) 1983-09-24
JPS5736649B2 (fr) 1982-08-05
DE2403408C3 (de) 1979-03-01
NL8800807A (nl) 1988-07-01
FR2218612B1 (fr) 1980-03-07
DE2462834C2 (de) 1988-08-18
JPS571052B2 (fr) 1982-01-09
JPS57147140A (en) 1982-09-10
NL8800808A (nl) 1988-07-01

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