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DE575355C - Method for the transmission of images - Google Patents

Method for the transmission of images

Info

Publication number
DE575355C
DE575355C DE1930575355D DE575355DD DE575355C DE 575355 C DE575355 C DE 575355C DE 1930575355 D DE1930575355 D DE 1930575355D DE 575355D D DE575355D D DE 575355DD DE 575355 C DE575355 C DE 575355C
Authority
DE
Germany
Prior art keywords
function
transmission
images
transformer
image
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
DE1930575355D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE575355C publication Critical patent/DE575355C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/32Velocity varied in dependence upon picture information

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Networks Using Active Elements (AREA)
  • Eye Examination Apparatus (AREA)

Description

In dem Hauptpatent ist ein Verfahren zur Übertragung von Bildern angegeben, bei dem an Stelle der von dem zu übertragenden Bild ursprünglich gegebenen Funktion, nämlich der Helligkeitsverteilung über die abzutastende Linie, eine Funktion übertragen wird, die von den wechselnden Eigenschaften der einzelnen abgetasteten Bildteile abhängt, z. B. das Integral der HelHgkeitswerte.In the main patent, a method for transferring images is specified in which instead of the function originally given by the image to be transmitted, namely the brightness distribution over the line to be scanned, a function is transferred, which depends on the changing properties of the individual scanned image parts, e.g. B. the integral of the helicity values.

ίο Die vorliegende Erfindung betrifft nun eine Erweiterung des Hauptpatents dahingehend, daß an Stelle der ursprünglich gegebenen Funktion oder des Integrals derselben eine beliebig andere hiervon abgeleitete Funktion übertragen wird. Bietet in einem besonderen Fall eine abgeleitete Funktion gegenüber der ursprünglich gegebenen bei der Übertragung von Bildern besondere Vorteile, so ist am Sender entweder die Abtastvorrichtung derart auszubilden, daß die Modulation entsprechend der gewünschten Ableitung der Funktion erfolgt, oder es ist zwischen Abtastvorrichtung und Übertragungsmittel eine Vorrichtung zu schalten, welche die ursprünglich gegebene Funktion in ihre Ableitung verwandelt. Bei dem Empfänger ist dann entweder die Bildzusammensetzungsvorrichtung derart auszugestalten, daß die Helligkeitsverteilung im erzeugten Bild der ursprünglichen Funktion entspricht, wenn die Ableitung von dieser auf die Bildzusammerisetzungsvorrichtung 'einwirkt, oder es ist hier ebenfalls eine' Vorrichtung zwischen Übertragungsmittel und Empfänger zu schalten, welche die Ableitung wieder in die Ursprungliehe Funktion zurückverwandelt.ίο The present invention now relates to an extension of the main patent to the effect that instead of the originally given function or its integral, any other one derived from it Function is transferred. Provides a derived function in a special case compared to the originally given advantages for the transmission of images, so either the scanning device is to be designed on the transmitter in such a way that the modulation takes place according to the desired derivative of the function, or it is between Scanning device and transmission means to switch a device, which the originally given function in their Derivative transformed. The receiver is then either the image composer designed in such a way that the brightness distribution in the generated image of the corresponds to the original function when the derivation of this is applied to the image compositor 'acts, or it is here also a' device between transmission means and to switch receivers, which return the derivation to the original Function converted back.

Die Hilfsmittel hierfür sind bekannt, so daß ein kurzes Beispiel zur Erläuterung genügt: The aids for this are known, so a short example is sufficient for explanation:

Es soll an Stelle der ursprünglich gegebenen Funktion der H elligkeits verteilung über die Linienkoordinate der Differentialquotient dieser Funktion zur Übertragung benutzt werden. In diesem Falle dient zur Bildzerlegung eine beliebige der bekannten Fernsehabtastvorrichtungen für Helligkeitssteuerung. Zwischen diese Abtastvorrichtung und das Übertragungsmittel wird dann ein Transformator geschaltet, der primär in Reihe mit einem Ohmschen Widerstand Hegt, dessen Widerstandswert groß gegen die Selbstinduktion des Transformators ist. Ist die ursprüngliche Funktion dann als Spannungsmodulation gegeben, so ist der Strom in der Primärwicklung des Transformators proportional der gegebenen Modulation. In bekannter Weise ist dann die Spannung an der Sekundär- B wicklung dieses Transformators proportional dem Differentialquotienten des Stromes der Primärwicklung und damit proportional dem Differentialquotienten der ursprünglichen Funktion. Wenn als Empfänger eines der bekannten Bildzusammensetzungssysteme für Helligkeitssteuerung verwendet wird,, dann istInstead of the originally given function of the brightness distribution over the line coordinate, the differential quotient of this function should be used for transmission. In this case, any of the known television scanning devices for brightness control is used for image decomposition. A transformer is then connected between this scanning device and the transmission means, which transformer is primarily in series with an ohmic resistor, the resistance of which is large with respect to the self-induction of the transformer. If the original function is then given as voltage modulation, the current in the primary winding of the transformer is proportional to the given modulation. The voltage is then at the secondary winding of this transformer B is proportional to the differential quotient of the current of the primary winding and thus proportional to the differential quotient of the original function in known manner. If one of the known picture composition systems for brightness control is used as the receiver, then is

demselben ein Kondensator vorzuschalten, der in bekannter Weise eine Summation der ankommenden Ströme vornimmt. Wird durch eine vorgeschaltete Röhre bewirkt, daß der Ladestrom bzw. Entladestrom' dieses Kondensators proportional der übertragenen Spannungsmodulation ist, dann wird durch die Summation mittels des Kondensators die ursprüngliche Funktion wiederhergestellt.upstream of the same a capacitor, which in a known manner a summation of the incoming Makes currents. Is caused by an upstream tube that the charge current or discharge current 'this capacitor is proportional to the transmitted voltage modulation, then by the Summation by means of the capacitor restored the original function.

Claims (1)

Patentanspruch:Claim: Verfahren zur Übertragung von Bildern nach Patent 563 294, dadurch gekennzeichnet, daß an Stelle der z. B. durch die Helligkeitsverteilung über eine Linie gegebenen Funktion oder des Integrals dieser Funktion eine beliebige andere hiervon abgeleitete Funktion übertragen wird.Method for transferring images according to Patent 563 294, characterized in that that in place of z. B. by the brightness distribution over a line given function or integral any other function derived therefrom is transferred to this function.
DE1930575355D 1929-05-18 1930-04-04 Method for the transmission of images Expired DE575355C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE355319X 1929-05-18
DE618976T 1930-02-21

Publications (1)

Publication Number Publication Date
DE575355C true DE575355C (en) 1933-04-27

Family

ID=34827953

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1930618976D Expired DE618976C (en) 1929-05-18 1930-02-21 Line control method
DE1930575355D Expired DE575355C (en) 1929-05-18 1930-04-04 Method for the transmission of images

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1930618976D Expired DE618976C (en) 1929-05-18 1930-02-21 Line control method

Country Status (5)

Country Link
US (1) US2011737A (en)
BE (1) BE370378A (en)
DE (2) DE618976C (en)
FR (2) FR695622A (en)
GB (2) GB355319A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523156A (en) * 1947-06-12 1950-09-19 Rca Corp Vertical sweep voltage correction for film movement in flying spot scansion
US2547598A (en) * 1947-09-13 1951-04-03 Zenith Radio Corp Subscription image transmission system and apparatus
US2601505A (en) * 1949-03-23 1952-06-24 Zenith Radio Corp Subscription type television transmitter
GB858346A (en) * 1956-11-20 1961-01-11 Nat Res Dev Improvements in or relating to television, facsimile and like signal transmission systems

Also Published As

Publication number Publication date
US2011737A (en) 1935-08-20
FR695622A (en) 1930-12-18
BE370378A (en)
DE618976C (en) 1935-09-26
GB355319A (en) 1931-08-17
GB377175A (en) 1932-07-19
FR39782E (en) 1932-03-18

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