Television signal decoding device - has high frequency carrier in which video signal is coded connected to AM demodulator via tuner and demodulator recovering coded video signal
CH679627A5
Coded video signal noise reduction system - responds to white shoulder preceding each line signal to switch between video signal and base voltage signal
CH667354A5
Radio-communication device with paging function - has paging channel continuously monitored by auxiliary receiver to activate acoustic and optical call signal
CH667173A5
Encoded television signal transmission system - uses noise signal carrier superimposed on TV signals only during image signal period
CH662229A5
Method for transmitting television signals used only by a restricted user circuit.
CH648446A5
Method of transmission of at least one television programme which is intended to be available only to a defined group of users
DE2856752A1
METHOD AND DEVICE FOR THE FREQUENCY MULTIPLEX INFORMATION TRANSMISSION
CH577256A5
Noise suppression circuit for TV receiver - uses common mode rejection by blanking low pass filtered input video to give step signal
DE2461134A1
Crosstalk and noise suppressor for stereophonic receivers - continuously alters relative crosstalk attenuation to optimize signal to noise ratio
DE2241720A1
PROCEDURE FOR TRANSMITTING AND DISTRIBUTING TELEVISION PROGRAMS VIA CABLE
