Television system with two FM sound carriers

Details Television system with two FM sound carriers Television system with two FM sound carriers

1978-01-30

1979-06-19

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358144, 358198, 358186, H04N 700

Patent

active

041588584

ABSTRACT:
Television system having first and second FM sound carriers, the receiver comprising a picture intermediate frequency section, a conventional first sound demodulation circuit connected thereto via a video detector for demodulating a first sound signal being frequency modulated on the first sound carrier, and a new second sound demodulation circuit connected directly to the picture intermediate frequency section with which a second sound signal being frequency modulated on the second sound carrier can be demodulated, even at a low amplitude of the second sound carrier.

REFERENCES:
patent: 3795764 (1974-03-01), Altmann

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