Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1985-09-30
1988-11-15
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 27, 307356, 375 98, H04N 552, H04N 944
Patent
active
047853522
ABSTRACT:
A sampled data signal amplitude detector for use in PLL's, for example, includes an absolute value detector to generate the magnitudes of the signal samples to be measured. The magnitudes of pairs of successive samples are compared and the larger magnitude sample of each pair is provided to an averager. The averager, averages a predetermined number of the larger magnitude samples and outputs the average as the amplitude of the applied signal.
REFERENCES:
patent: 4344021 (1982-08-01), Johnston
patent: 4434439 (1984-02-01), Steckler et al.
patent: 4491862 (1985-01-01), Flamm
patent: 4510521 (1985-04-01), Ruprecht et al.
Burrowes Sherwin D.
Kwan Alfred Y.
Chin Tommy P.
Herrmann Eric P.
Rasmussen Paul J.
RCA Licensing Corporation
Whitacre Eugene M.
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