Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1979-09-13
1981-12-22
Murray, Richard
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
455164, H04N 544
Patent
active
043074227
ABSTRACT:
This application describes a receiver in which channel selection is controlled by a frequency synthesizer a sweep of available channels is made by a channel selecting arrangement and this sweep is arranged to be stopped when a signal is received. When the sweeping is stopped a fine tuning arrangement takes control to respond to the frequency of the received signal and to compensate for any drift of that signal.
REFERENCES:
patent: 3715495 (1973-02-01), Takezari et al.
patent: 3949164 (1976-04-01), Murakami et al.
patent: 3967057 (1976-06-01), Tsukamoto et al.
patent: 4159487 (1979-06-01), Elshuber et al.
Murray Richard
Plessey Handel und Investments A.G.
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