Electronic method and circuit for analyzing analog signals
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United States of America Patent
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Mar 9, 1993
Grant Date -
N/A
app pub date -
Jan 8, 1991
filing date -
Jan 29, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for analyzing analog signals for coin detection comprises establishing, in an analog signal different measurement areas TA, TB, TC, based upon the gradient changes of that signal, to determine a digital signal according to such changes. An electronic circuit is used, which includes an operational amplifier with a time delay that compares the analog signal with the same signal, insignificantly delayed with regard to the signal duration.
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