Signal timing circuits
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United States of America Patent
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-
Nov 14, 1989
Grant Date -
N/A
app pub date -
Jun 6, 1985
filing date -
Jun 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal timing circuit for use in re-timing circuits in digital signal regenerators in long distance telecommunications systems is disclosed. A phase control circuit controls the timing of clock signal relative to digital signals at a re-timing gate by means of a negative feedback loop and a phase shifter. The feed back loop maintains the desired relative timing in dependence upon a reference voltage (V.sub.ref) and a voltage (V.sub.var) obtained from the phase difference of the input digital signals (.phi..sub.i) and the output digital signals (.phi..sub.o) of the re-timing gate.
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