Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1976-09-21
1977-09-27
Griffin, Robert L.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
179 15AN, 325 47, 325 65, 358 38, 358143, 360 19, H04N 706, H04B 1500
Patent
active
040515338
ABSTRACT:
A method of reducing the interference between the sideband of a first carrier which is frequency-modulated by a video signal and a second carrier which is frequency-modulated by an audio signal, comprising increasing the amplitude of the second carrier signal and decreasing at least those sideband components of the first carrier in the region of the second carrier as those components tend to increase to interfere with the second carrier.
REFERENCES:
patent: 3371154 (1968-02-01), Frohbach et al.
patent: 3521177 (1970-07-01), De Niet
patent: 3548085 (1970-12-01), Shimada
patent: 3800100 (1974-03-01), Runge
patent: 3830968 (1974-08-01), Redlich et al.
Bookbinder Marc E.
Griffin Robert L.
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