DE873258C - Arrangement for the introduction of a carrier frequency in the television scanning of a continuously moving film - Google Patents

Arrangement for the introduction of a carrier frequency in the television scanning of a continuously moving film

Info

Publication number
DE873258C
DE873258C DEC3190D DEC0003190D DE873258C DE 873258 C DE873258 C DE 873258C DE C3190 D DEC3190 D DE C3190D DE C0003190 D DEC0003190 D DE C0003190D DE 873258 C DE873258 C DE 873258C
Authority
DE
Germany
Prior art keywords
carrier frequency
introduction
arrangement
continuously moving
moving film
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
Application number
DEC3190D
Other languages
German (de)
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger 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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Application granted granted Critical
Publication of DE873258C publication Critical patent/DE873258C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/257—Picture signal generators using flying-spot scanners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/36—Scanning of motion picture films, e.g. for telecine
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/36—Scanning of motion picture films, e.g. for telecine
    • H04N3/38—Scanning of motion picture films, e.g. for telecine with continuously moving film

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Facsimile Scanning Arrangements (AREA)

Description

Es wurde bereits vorgeschlagen, die Verwaschung von Bildhelligkeitssignalen durch das Nachleuchten der Leuchtmasse einer zur Bildzerlegung· eines stetig' bewegten Films dienenden Kathodenstrahlröhre dadurch zu vermeiden, daß eine von der für die drahtlose Übertragung benutzten Trägerfrequenz in ihrer Frequenz abweichende hochfrequente Spannung an die Helligkeitssteuerelektrode der Bratinschen Röhre gelegt wird, so daß der Leuchtfleck im Takt der hochfrequenten Spannung seine Helligkeit ändert. Es entsteht dann im Photozellenkreis eine mit denIt has already been proposed that image brightness signals be blurred by the afterglow the luminous mass of a for image decomposition 'a continuous' To avoid moving film serving cathode ray tube by using one of the for the wireless Transmission used carrier frequency in its frequency deviating high-frequency voltage the brightness control electrode of the Bratin tube is placed so that the light spot changes its brightness in time with the high-frequency voltage. One with the is then created in the photocell circuit

Bildhelligkeitssignalen modulierte Hochfrequenzspannung, die sich frequenzmäßig von den durch das Nachleuchten hervorgehobenen Niederfrequenzströmen trennen läßt.Image brightness signals modulated high-frequency voltage, the frequency of which differs from the the afterglow separates highlighted low frequency currents.

Erfindungsgemäß soll zur Einführung einer Trägerfrequenz bei der Fernsehabtastung eines stetig bewegten Films durch Steuerung des einen Leuchtfleck auf dem Schirm einer Abtastkathodenstrahlröhre hervorrufenden Strahls der Leuchtfleck mit der Trägerfrequenz in einer Richtung abgelenkt werden, die senkrecht zu einem zwischen Leucht-According to the invention to introduce a carrier frequency in the television scanning a continuously moving film by controlling one light spot on the screen of a scanning cathode ray tube causing beam deflected the light spot with the carrier frequency in one direction that are perpendicular to an

schirm und Film angeordneten feststehenden BlendJenspalt verläuft. -fixed screen and film arranged BlendJenspalt runs. -

In dieser Weise kann man auch dann, wenn 'eine Steuerung· der StraMstoomintensität der Braunschen Röhre aus irgendeinem Grund nicht möglich ist, z. B. weil die Röhre eine Gasfüllung besitzt oder weil sie keijie HelHglseitssteuerelektrode aufweist, eine Trägerfrequenz in die Bildhelligkeits signale einführen und dadiurch die Schwächung der höheren im Signal .enthaltenen Frequenzen durch das Nachleuchten vermeiden.In this way you can also if 'a Control of the StraMstoomintensity of the Braunschen Tube is not possible for some reason, e.g. B. because the tube has a gas filling or because it has no helm control electrode, introduce a carrier frequency in the image brightness signals and thereby weaken the higher frequencies contained in the signal due to the afterglow avoid.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Anordnung zur Einführung einer Trägerfrequenz bei der Femsehabtastung eines stetig bewegten Films durch Steuerung des einen Leuchtfleck auf dem Schirm einer Abtastkaiho'denstrahlröhre hervorrufenden Strahls, dadurch gekennzeichnet, daß der Leuchtfleck mit der Trägerfrequenz in einer Richtung abgelenkt wird, die senkrecht zu einem zwischen Leuchtschirm und Film angeordneten feststehenden Blendenspalt verläuft.Arrangement for the introduction of a carrier frequency when scanning a television continuously moving film by controlling one light spot on the screen of a scanning kaiho'den ray tube causing beam, characterized in that the light spot with the carrier frequency is deflected in a direction perpendicular to an intermediate phosphor screen and film arranged fixed aperture gap runs.
DEC3190D 1934-05-05 1935-04-06 Arrangement for the introduction of a carrier frequency in the television scanning of a continuously moving film Expired DE873258C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR785588T 1934-05-05

Publications (1)

Publication Number Publication Date
DE873258C true DE873258C (en) 1953-04-13

Family

ID=8899688

Family Applications (3)

Application Number Title Priority Date Filing Date
DEC3190D Expired DE873258C (en) 1934-05-05 1935-04-06 Arrangement for the introduction of a carrier frequency in the television scanning of a continuously moving film
DEC3194A Expired DE876413C (en) 1934-05-05 1936-03-02 Scanning device for remote kinematography transmitter
DEC3189D Expired DE874152C (en) 1934-05-05 1937-10-02 Arrangement for setting the film frame phase on film television channels

Family Applications After (2)

Application Number Title Priority Date Filing Date
DEC3194A Expired DE876413C (en) 1934-05-05 1936-03-02 Scanning device for remote kinematography transmitter
DEC3189D Expired DE874152C (en) 1934-05-05 1937-10-02 Arrangement for setting the film frame phase on film television channels

Country Status (5)

Country Link
BE (2) BE408527A (en)
DE (3) DE873258C (en)
FR (2) FR785588A (en)
GB (2) GB435749A (en)
NL (1) NL45042C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520507A (en) * 1947-07-29 1950-08-29 Rauland Corp Kinescope for simultaneously picking up an object and presenting an image
US2804498A (en) * 1950-10-17 1957-08-27 Pye Ltd Gamma control for flying spot scanner

Also Published As

Publication number Publication date
BE408527A (en) 1935-04-30
FR785588A (en) 1935-08-12
DE876413C (en) 1953-06-11
GB462782A (en) 1937-03-16
NL45042C (en) 1938-09-15
FR46543E (en) 1936-07-09
BE413971A (en)
DE874152C (en) 1953-04-20
GB435749A (en) 1935-09-26

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