Radio frequency converter

Details Radio frequency converter Radio frequency converter

1974-08-06

1977-04-12

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

179 15FD, H04N 538, H04N 706

Patent

active

040176827

ABSTRACT:
A radio frequency converter adapted for use with an image pick-up system having separate channels such as a television transmitter or a video tape recording-reproducing apparatus is provided with a single frequency multiplier having a resonant circuit with a characteristic curve which encompasses the frequencies of the video carriers to eliminate spurious noise due to switching between the separate channels. The converter is further provided with a single trap circuit which eliminates all of the unwanted lower side band frequencies of the sound signals to eliminate spurious noise due to switching between the separate channels.

REFERENCES:
patent: 3775555 (1973-11-01), Carlson

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