NL7211998A - - Google Patents

Info

Publication number
NL7211998A
NL7211998A NL7211998A NL7211998A NL7211998A NL 7211998 A NL7211998 A NL 7211998A NL 7211998 A NL7211998 A NL 7211998A NL 7211998 A NL7211998 A NL 7211998A NL 7211998 A NL7211998 A NL 7211998A
Authority
NL
Netherlands
Application number
NL7211998A
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 filed Critical
Priority to NL7211998A priority Critical patent/NL7211998A/xx
Priority to US344701A priority patent/US3873763A/en
Priority to DE19732341339 priority patent/DE2341339C3/de
Priority to AU59752/73A priority patent/AU474742B2/en
Priority to FR7331191A priority patent/FR2198335A1/fr
Priority to IT52241/73A priority patent/IT990422B/it
Priority to AT755873A priority patent/AT341014B/de
Priority to CH1246573A priority patent/CH576684A5/xx
Priority to CA180,001A priority patent/CA1019832A/en
Priority to JP9674873A priority patent/JPS5330452B2/ja
Priority to BE135213A priority patent/BE804330A/xx
Priority to GB4111373A priority patent/GB1441769A/en
Priority to ES418386A priority patent/ES418386A1/es
Publication of NL7211998A publication Critical patent/NL7211998A/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • 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
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0914—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by non-optical methods, e.g. capacitive
NL7211998A 1972-09-02 1972-09-02 NL7211998A (xx)

Priority Applications (13)

Application Number Priority Date Filing Date Title
NL7211998A NL7211998A (xx) 1972-09-02 1972-09-02
US344701A US3873763A (en) 1972-09-02 1973-03-26 Disk-shaped record carrier on which information is recorded in the form of an optical structure
DE19732341339 DE2341339C3 (de) 1972-09-02 1973-08-16 Scheibenförmiger Aufzeichnungsträger, mit in einer optischen Struktur angebrachten Daten und Vorrichtung zum Auslesen des Aufzeichnungsträgers
AU59752/73A AU474742B2 (en) 1972-09-02 1973-08-29 Disk-shaped record carrier on which information is recorded in the form of an optical structure
FR7331191A FR2198335A1 (xx) 1972-09-02 1973-08-29
IT52241/73A IT990422B (it) 1972-09-02 1973-08-30 Supporto di informazione registrata su disco a struttura ottica
AT755873A AT341014B (de) 1972-09-02 1973-08-30 Scheibenformiger, strahlungsreflektierender aufzeichnungstrager und vorrichtung zum auslesen von auf einem solchen aufzeichnungstrager gespeicherten informationen
CH1246573A CH576684A5 (xx) 1972-09-02 1973-08-30
CA180,001A CA1019832A (en) 1972-09-02 1973-08-30 Disk-shaped record carrier on which information is recorded in the form of an optical structure
JP9674873A JPS5330452B2 (xx) 1972-09-02 1973-08-30
BE135213A BE804330A (fr) 1972-09-02 1973-08-31 Porte-enregistrement en forme de plaque sur lequel de l'information est enregistree dans une structure optique et dispositif pour la lecture d'un tel porte-enregistrement
GB4111373A GB1441769A (en) 1972-09-02 1973-08-31 Information record and reading apparatus therefor
ES418386A ES418386A1 (es) 1972-09-02 1973-08-31 Aparato para leer un portador de registro en forma de dis- co.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7211998A NL7211998A (xx) 1972-09-02 1972-09-02

Publications (1)

Publication Number Publication Date
NL7211998A true NL7211998A (xx) 1974-03-05

Family

ID=19816848

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7211998A NL7211998A (xx) 1972-09-02 1972-09-02

Country Status (12)

Country Link
US (1) US3873763A (xx)
JP (1) JPS5330452B2 (xx)
AT (1) AT341014B (xx)
AU (1) AU474742B2 (xx)
BE (1) BE804330A (xx)
CA (1) CA1019832A (xx)
CH (1) CH576684A5 (xx)
ES (1) ES418386A1 (xx)
FR (1) FR2198335A1 (xx)
GB (1) GB1441769A (xx)
IT (1) IT990422B (xx)
NL (1) NL7211998A (xx)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL164688C (nl) * 1973-10-15 1981-01-15 Mca Disco Vision Werkwijze voor de vervaardiging van een videoschijf waarbij uitgaande van een moedermatrijs eerst een vorm wordt vervaardigd.
JPS5161725A (xx) * 1974-11-27 1976-05-28 Nippon Musical Instruments Mfg
JPS5161724A (xx) * 1974-11-27 1976-05-28 Nippon Musical Instruments Mfg
FR2294451A1 (fr) * 1974-12-09 1976-07-09 Anvar Dispositif pour mesurer des quantites de charges electriques
NL182257C (nl) * 1974-12-23 1988-02-01 Philips Nv Inrichting voor het uitlezen van een vlakke reflekterende registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur.
US3959581A (en) * 1975-01-29 1976-05-25 Zenith Radio Corporation Self-compensating focus system for optical video playback device
US3932701A (en) * 1975-01-29 1976-01-13 Zenith Radio Corporation Self-compensating focus system for a reflective video disc
JPS598892B2 (ja) * 1975-06-19 1984-02-28 ソニー株式会社 信号の光学的記録再生装置
GB1577132A (en) * 1976-03-19 1980-10-22 Rca Corp Compensation apparatus for a servo system with periodic command signals
GB1577134A (en) * 1976-03-19 1980-10-22 Rca Corp Capacitance distance control apparatus
US4183060A (en) * 1976-03-19 1980-01-08 Rca Corporation Capacitance distance sensor apparatus for video disc player/recorder
JPS52120805A (en) * 1976-04-02 1977-10-11 Sony Corp Servo apparatus
US4161752A (en) * 1977-06-28 1979-07-17 International Business Machines Corporation High density video disk having two pit depths
NL7904724A (nl) * 1979-06-18 1980-12-22 Philips Nv Optische aftastinrichting met fokusseerstelsel.
US4285056A (en) * 1979-10-17 1981-08-18 Rca Corporation Replicable optical recording medium
US4323998A (en) * 1980-08-21 1982-04-06 Rca Corporation Video disc locked groove corrector
CA1192662A (en) * 1982-06-21 1985-08-27 James E. Kuder Erasable recording medium comprising a dimer acid polyamide resin
CA1192307A (en) * 1982-06-21 1985-08-20 Anthony J. East Erasable optical recording medium
US4931887A (en) * 1988-02-01 1990-06-05 International Business Machines Corporation Capacitive measurement and control of the fly height of a recording slider

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1917003A (en) * 1929-01-21 1933-07-04 Columbia Phono Graph Company I Reproduction of sound records
US1967882A (en) * 1929-08-01 1934-07-24 Jr John Hays Hammond Photo-electric system for recording and reproducing sound
US2034803A (en) * 1934-11-09 1936-03-24 Wallace W Fuller Method of and apparatus for producing intelligible sound from optical indicia
US2654810A (en) * 1949-11-15 1953-10-06 Miessner Inventions Inc Photoelectric translating system
US3198880A (en) * 1952-09-03 1965-08-03 Hall William D Photographic disc reproduction of television signals
DE1903822C3 (de) * 1969-01-23 1973-12-13 Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) Vorrichtung zur Wiedergabe auf einem Trager gespeicherter Signale, Aufzeichnungs verfahren für einen Trager sowie Trager zur Wiedergabe mit der Vorrichtung
US3688025A (en) * 1970-10-27 1972-08-29 Rca Corp Recorder and playback apparatus for pulse width modulated record

Also Published As

Publication number Publication date
CA1019832A (en) 1977-10-25
BE804330A (fr) 1974-02-28
ES418386A1 (es) 1976-09-01
ATA755873A (de) 1977-05-15
AT341014B (de) 1978-01-10
IT990422B (it) 1975-06-20
JPS4965725A (xx) 1974-06-26
DE2341339A1 (de) 1974-03-14
JPS5330452B2 (xx) 1978-08-26
AU474742B2 (en) 1976-07-29
CH576684A5 (xx) 1976-06-15
DE2341339B2 (de) 1977-02-10
AU5975273A (en) 1975-03-06
US3873763A (en) 1975-03-25
FR2198335A1 (xx) 1974-03-29
GB1441769A (en) 1976-07-07

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Legal Events

Date Code Title Description
BI The patent application has been withdrawn