Telecontrol message transmission system
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United States of America Patent
Stats
-
Apr 8, 1980
Issued Date -
N/A
app pub date -
Dec 4, 1978
filing date -
May 16, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A telecontrol order transmission system having at the transmitting end a source, for generating ergodic random signals x(t), a circuit for alternately delivering the sum and the difference of signals x(t) and x(t-T.sub.1), which circuit is switched at the rate of a frequency f.sub.c and, at the receiving end, a multiplier multiplies a received signal by said received signal delayed by time lapse T.sub.i, an integrator for time averaging the output of said multiplier, a band-pass filter with a narrow bandwidth centered about frequency f.sub.c, connected to the output of said integrator, and a circuit for deriving a telecontrol order from the output of said filter.
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