Control of signal transmission
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United States of America Patent
Stats
-
Nov 21, 1989
Grant Date -
N/A
app pub date -
Jan 9, 1986
filing date -
Jan 9, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Circuits embodying the invention include apparatus for sensing the amplitude and the frequency of the signals received from one section of a telephone cable and for propagating onto the succeeding section of telephone cable only those received signals having an amplitude greater than a predetermined level and whose frequency is within the predetermined range.
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