Synchronizing method and apparatus
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United States of America Patent
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-
Dec 23, 1980
Grant Date -
N/A
app pub date -
Oct 5, 1978
filing date -
Oct 5, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus are described for developing a series of synchronizing pulses related to a series of input pulses of variable amplitude above a background noise level. A first signal is developed proportional to the derivative of the rising or falling portion (or both) of each of the input pulses. A second signal is developed related to the first signal and having a decay characteristic such that the amplitude of the second signal becomes equal to the amplitude of the first signal at a threshold point which is proportional to the amplitude of the first signal. The synchronizing pulses are developed related to respective threshold points whereby the phase of the synchronizing signal is not dependent on the amplitude of the input pulses.
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