BE374986A - - Google Patents

Info

Publication number
BE374986A
BE374986A BE374986DA BE374986A BE 374986 A BE374986 A BE 374986A BE 374986D A BE374986D A BE 374986DA BE 374986 A BE374986 A BE 374986A
Authority
BE
Belgium
Prior art keywords
emi
film
frequency
cathode ray
ray tube
Prior art date
Application number
Other languages
French (fr)
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
Priority claimed from US407762A external-priority patent/US1849839A/en
Priority claimed from US407699A external-priority patent/US1955320A/en
Publication of BE374986A publication Critical patent/BE374986A/fr
Application filed filed Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/04Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Description

  

   <EMI ID=1.1> 

  
 <EMI ID=2.1>   <EMI ID=3.1> 

  
seurs d'autre part . 

  
De" un* des réalisations pratiques possibles de l'Invention, il 

  
 <EMI ID=4.1> 

  
La système de lentille" est choisi de telle manière que, en l'ab- 
-sauce de film, l'image du miroir se concentre sur la cellule photoélectrique  quelles que soient les oscillations du miroir. 

  
 <EMI ID=5.1> 

  
dule, dans certaines conditions, l'onde porte=@ de la station d'émission et  commande le dispositif analyseur à la station réceptrice.

  
Chaque station réceptrice possède un tube à rayons cathodiques comportant plusieurs dispositifs de contrôla du rayon. L'un de ce=-ci module

  
 <EMI ID=6.1> 

  
 <EMI ID=7.1> 

  
tation, et dans lesquels 

  
Le Figure 1 est une vue schématique partiellement en perspective, des éléments essentiel* constituant une station d'émission de télévision  <EMI ID=8.1> 

  
 <EMI ID=9.1> 

  
film réfléchie la lumière de la source 11 en un point du film. Le miroir 15

  
 <EMI ID=10.1> 

  
résulte que le rayon lumineux balaye rapidement et transversalement le film d'un cote à l'autre* La fréquence de la source 17, dans l'exemple cité plus haut, vaut 760 périodes par seconda.

  
 <EMI ID=11.1>  

  
 <EMI ID=12.1> 

  
réglable 43, la self de couplage 44 et une connexion de terre 45.

  
 <EMI ID=13.1>   <EMI ID=14.1> 

  
cellule photoélectrique 29 et module le courant traversent cella-ci conformément aux variations d'opacité du film.

  
 <EMI ID=15.1> 

  
 <EMI ID=16.1> 

  
est introduite dans la circuit d'entrée de l'amplificateur 34, à l'aida du

  
 <EMI ID=17.1> 

  
Came' l'onde porteuse est modulée en marna tempa par la fréquence

  
 <EMI ID=18.1>   <EMI ID=19.1> 

  
 <EMI ID=20.1> 

  
L'appareil récepteur comprend un tube à rayons cathodiques 64

  
 <EMI ID=21.1> 

  
piècea polaires 68 destinées à dévier le flux d'électrons dans la direction

  
 <EMI ID=22.1> 

  
L'électrode de contrôle 66 du tube à rayons cathodiques est con-

  
 <EMI ID=23.1> 

  
 <EMI ID=24.1> 

  
autre dispositif da déviation des électrons. 

  
 <EMI ID=25.1> 

  
lament du tube 81. Ce courant peut être réglé par le rhéostat de chauffage 85

  
 <EMI ID=26.1> 

  
 <EMI ID=27.1> 

  
 <EMI ID=28.1>   <EMI ID=29.1> 

  
tée à la fréquence dédoublée de 8000 périodes" Le dédoublement de la fréquen-

  
 <EMI ID=30.1> 

  
 <EMI ID=31.1> 

  
 <EMI ID=32.1> 

  
0 - <EMI ID=33.1> 

  
Ces fréquences ne sont évidemment pas absolues , nais il est toutefois nécessaire qu'elle soient suffisaient différentes l'une de l'au-

  
 <EMI ID=34.1> 

  
 <EMI ID=35.1> 

  
 <EMI ID=36.1> 

  
ou non.

  
 <EMI ID=37.1>  <EMI ID=38.1> 

  
reçu* par un* cellule sensible à la lumière 15 qui est reliée au circuit

  
 <EMI ID=39.1> 



   <EMI ID = 1.1>

  
 <EMI ID = 2.1> <EMI ID = 3.1>

  
sisters on the other hand.

  
From "one * of the possible practical realizations of the Invention, it

  
 <EMI ID = 4.1>

  
The lens system "is chosen in such a way that, in the ab-
-sauce of film, the mirror image is focused on the photoelectric cell regardless of the oscillations of the mirror.

  
 <EMI ID = 5.1>

  
dules, under certain conditions, the gate wave = @ of the transmitting station and controls the analyzer device at the receiving station.

  
Each receiving station has a cathode ray tube with several ray control devices. One of this = -ci module

  
 <EMI ID = 6.1>

  
 <EMI ID = 7.1>

  
tation, and in which

  
Figure 1 is a schematic view, partially in perspective, of the essential elements * constituting a television broadcasting station <EMI ID = 8.1>

  
 <EMI ID = 9.1>

  
film reflects the light from the source 11 at a point in the film. The mirror 15

  
 <EMI ID = 10.1>

  
The result is that the light ray scans the film rapidly and transversely from one side to the other. The frequency of the source 17, in the example cited above, is equal to 760 periods per seconda.

  
 <EMI ID = 11.1>

  
 <EMI ID = 12.1>

  
adjustable 43, the coupling choke 44 and an earth connection 45.

  
 <EMI ID = 13.1> <EMI ID = 14.1>

  
photoelectric cell 29 and modulates the current flowing through it in accordance with the variations in opacity of the film.

  
 <EMI ID = 15.1>

  
 <EMI ID = 16.1>

  
is introduced into the input circuit of amplifier 34, with the aid of

  
 <EMI ID = 17.1>

  
Cam 'the carrier wave is modulated in marna tempa by the frequency

  
 <EMI ID = 18.1> <EMI ID = 19.1>

  
 <EMI ID = 20.1>

  
The receiving apparatus includes a cathode ray tube 64

  
 <EMI ID = 21.1>

  
polar pieces 68 designed to deflect the flow of electrons in the direction

  
 <EMI ID = 22.1>

  
The cathode ray tube control electrode 66 is con-

  
 <EMI ID = 23.1>

  
 <EMI ID = 24.1>

  
another electron deflection device.

  
 <EMI ID = 25.1>

  
lament of the tube 81. This current can be regulated by the heating rheostat 85

  
 <EMI ID = 26.1>

  
 <EMI ID = 27.1>

  
 <EMI ID = 28.1> <EMI ID = 29.1>

  
ted at the split frequency of 8000 periods "The split of the frequency

  
 <EMI ID = 30.1>

  
 <EMI ID = 31.1>

  
 <EMI ID = 32.1>

  
0 - <EMI ID = 33.1>

  
These frequencies are obviously not absolute, but it is nevertheless necessary that they are sufficiently different from one to the other.

  
 <EMI ID = 34.1>

  
 <EMI ID = 35.1>

  
 <EMI ID = 36.1>

  
or not.

  
 <EMI ID = 37.1> <EMI ID = 38.1>

  
received * by a * light sensitive cell 15 which is connected to the circuit

  
 <EMI ID = 39.1>

 

Claims (1)

<EMI ID=40.1> <EMI ID = 40.1> <EMI ID=41.1> <EMI ID = 41.1> <EMI ID=42.1> <EMI ID=43.1> <EMI ID = 42.1> <EMI ID = 43.1> <EMI ID=44.1> <EMI ID = 44.1>
BE374986D 1929-11-16 1930-11-29 BE374986A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US407762A US1849839A (en) 1929-11-16 1929-11-16 Transmission of pictures
US407699A US1955320A (en) 1929-11-16 1929-11-16 Television synchronization method

Publications (1)

Publication Number Publication Date
BE374986A true BE374986A (en) 1930-04-30

Family

ID=33161969

Family Applications (1)

Application Number Title Priority Date Filing Date
BE374986D BE374986A (en) 1929-11-16 1930-11-29

Country Status (1)

Country Link
BE (1) BE374986A (en)

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