Electrical apparatus
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United States of America Patent
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-
Jan 3, 1989
Grant Date -
N/A
app pub date -
May 27, 1987
filing date -
May 28, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for measuring frequency includes a first period measuring counter (14) arranged to measure a periodic signal and generate a counter enable signal an integer number of cycles long, and a second period measuring counter (15) arranged to measure frequency of an input signal over a gate period given by the counter enable duration. The apparatus may be used to remove dither in the measurement of carrier frequency of FM signals.
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Cited Art Landscape
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