Communications: electrical – Digital comparator systems
Patent
1979-06-18
1981-03-10
Smith, Jerry
Communications: electrical
Digital comparator systems
328117, 328154, 455135, G06F 702, H04B 106
Patent
active
042557402
ABSTRACT:
A system which selects the highest quality signal from similar signals includes a signal quality detector for each of the signals and a comparator. Each detector provides an output level indicative of the quality of the signal and these signals indicative of the quality of the signal are sequentially provided to a first input of the comparator. The comparator is responsive to signal levels indicating a higher quality signal level than that of a reference level applied to a second input of the comparator for providing that signal out of the selecting system and providing a new reference signal level indicative of the higher quality signal to the second input of the comparator. The system also ranks the input signals according to their quality by repeating the comparison with the successively highest quality signal removed from the comparison.
REFERENCES:
patent: 3403341 (1968-09-01), Munch
patent: 3495175 (1970-02-01), Munch
patent: 3729682 (1973-04-01), Elder
patent: 3740538 (1973-06-01), Hemphill
patent: 3794974 (1974-02-01), Henn et al.
patent: 3829664 (1974-08-01), Kashio
patent: 3860872 (1975-01-01), Richardson et al.
patent: 3927391 (1975-12-01), Cantrell
patent: 4030040 (1977-06-01), Harbert
Rasmussen Paul J.
RCA Corporation
Smith Jerry
Troike Robert L.
Whitacre Eugene M.
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