Phase difference measuring apparatus
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United States of America Patent
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-
Jul 15, 1986
Grant Date -
N/A
app pub date -
Oct 4, 1983
filing date -
Oct 6, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
First and second input signals are waveform-shaped into rectangular wave signals and, in a period measuring mode, one of the rectangular wave signal is input into a time interval measuring circuit and clock pulses are counted during the period of the rectangular wave signal. In a time interval measuring mode, the clock pulses are counted by the time interval measuring circuit over the time interval between one edge of the one rectangular wave signal and the corresponding edge of the other rectangular wave signal, and the phase difference between the first and second input terminals is calculated from the count values.
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