BE774575A - Appareil d'enregistrement et de lecture pour la production d'enregistrements modules par impulsions de largeur variable - Google Patents

Appareil d'enregistrement et de lecture pour la production d'enregistrements modules par impulsions de largeur variable

Info

Publication number
BE774575A
BE774575A BE774575A BE774575A BE774575A BE 774575 A BE774575 A BE 774575A BE 774575 A BE774575 A BE 774575A BE 774575 A BE774575 A BE 774575A BE 774575 A BE774575 A BE 774575A
Authority
BE
Belgium
Prior art keywords
recordings
pulses
modulated
recording
production
Prior art date
Application number
BE774575A
Other languages
English (en)
French (fr)
Inventor
M J Whittemore
Original Assignee
Rca Corp
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 Rca Corp filed Critical Rca Corp
Publication of BE774575A publication Critical patent/BE774575A/xx

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
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • 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
    • 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
    • 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/89—Television signal recording using holographic recording

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
BE774575A 1970-10-27 1971-10-27 Appareil d'enregistrement et de lecture pour la production d'enregistrements modules par impulsions de largeur variable BE774575A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8435670A 1970-10-27 1970-10-27

Publications (1)

Publication Number Publication Date
BE774575A true BE774575A (fr) 1972-02-14

Family

ID=22184438

Family Applications (1)

Application Number Title Priority Date Filing Date
BE774575A BE774575A (fr) 1970-10-27 1971-10-27 Appareil d'enregistrement et de lecture pour la production d'enregistrements modules par impulsions de largeur variable

Country Status (9)

Country Link
US (1) US3688025A (cs)
AU (1) AU3446071A (cs)
BE (1) BE774575A (cs)
CA (1) CA956032A (cs)
DE (1) DE2153607A1 (cs)
ES (1) ES396426A1 (cs)
FR (1) FR2113273A5 (cs)
GB (1) GB1372082A (cs)
NL (1) NL7114707A (cs)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041530A (en) * 1971-03-04 1977-08-09 U.S. Philips Corporation Video disc with phase structure
US4160269A (en) * 1971-03-04 1979-07-03 U.S. Philips Corporation Apparatus for optically reading a phase-modulated optical record carrier
FR2197495A5 (cs) * 1972-08-25 1974-03-22 Thomson Csf
US5182743A (en) * 1972-08-25 1993-01-26 Thomson-Csf Optical disk arrangement with diffractive tracks allowing positional control
US5175725A (en) * 1972-08-25 1992-12-29 Thomson-Csf Optical disk arrangement with closed contours whose entire extent represents information
NL7211998A (cs) * 1972-09-02 1974-03-05
NL7212045A (cs) * 1972-09-05 1974-03-07
NL7212044A (cs) * 1972-09-05 1974-03-07
US4057831A (en) * 1972-09-05 1977-11-08 U.S. Philips Corporation Video record disc manufactured by a process involving chemical or sputter etching
US3931459A (en) * 1974-02-04 1976-01-06 Zenith Radio Corporation Video disc
US4084185A (en) * 1974-02-12 1978-04-11 U.S. Philips Corporation Record carrier on which information is stored in an optically readable structure
US4001493A (en) * 1974-09-03 1977-01-04 Nihon Denshi Kabushiki Kaisha Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article
US4044939A (en) * 1975-09-08 1977-08-30 Ncr Corporation Method of fabricating diffraction grating masters and apparatus therefor
DE2615605C2 (de) * 1976-04-09 1978-06-01 Polygram Gmbh, 2000 Hamburg Scheibenförmiger Informationsträger und Verfahren zu seiner Herstellung
JPS6047641B2 (ja) * 1976-07-06 1985-10-23 ソニー株式会社 磁気記録装置
EP0044122A3 (en) * 1978-03-27 1982-08-04 Discovision Associates Method and apparatus for writing a signal information track on a disc
NL7803517A (nl) * 1978-04-03 1979-10-05 Philips Nv Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen.
JPS57158004A (en) * 1981-03-24 1982-09-29 Toshiba Corp Magnetic transfer recorder
GB8309447D0 (en) * 1983-04-07 1983-05-11 Combined Tech Corp Plc Optical data storage
TR199800580T1 (xx) * 1995-09-29 1998-06-22 Sage Technology Incorporated Optik dijital medya kay�t ve kopyalama sistemi.
US6280757B1 (en) 1997-05-22 2001-08-28 The Procter & Gamble Company Cleansing articles for skin or hair

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210466A (en) * 1961-08-02 1965-10-05 Gulton Ind Inc Image display system using mechanically embossed optical record
US3335219A (en) * 1963-08-01 1967-08-08 Columbia Broadcasting Syst Inc Television picture and sound recording system
US3461229A (en) * 1965-08-17 1969-08-12 Jess Oppenheimer Electro-optical reproduction method
US3583804A (en) * 1968-09-30 1971-06-08 Technical Operations Inc Photostorage and retrieval of multiple images by diffraction processes with cross-talk suppression

Also Published As

Publication number Publication date
DE2153607A1 (de) 1972-05-04
ES396426A1 (es) 1974-05-01
GB1372082A (en) 1974-10-30
NL7114707A (cs) 1972-05-02
FR2113273A5 (cs) 1972-06-23
AU3446071A (en) 1973-04-19
CA956032A (en) 1974-10-08
US3688025A (en) 1972-08-29

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