G - Physics
01
R
328/162, 328/28
G01R 25/00 (2006.01) G06G 7/26 (2006.01) H03D 13/00 (2006.01)
Patent
CA 1179743
ABSTRACT OF THE DISCLOSURE A phase comparator includes a first signal input terminal supplied with a reference signal, a second signal input terminal supplied with an input signal to be compared with the reference signal, a first gate circuit having a pair of input terminals and an output terminal, one of the pair of input terminals of which is connected to the first signal input terminal, a second gate circuit having a pair of input terminals and an output terminal, one of the pair of input terminals of which is connected to the second signal input terminal, a first bi-stable circuit having set, reset and output terminals, the set terminal of which is connected to the output terminal of the first gate circuit, a second bi-stable circuit having set, reset and output terminals, the set terminal of which is connected to the output terminal of the second gate circuit, and first and second gate control circuits connected between the other input terminals of the first and second gate circuits and the output terminals of the first and second bi-stable circuits operative to open one of the first and second gate circuit alternately. The output signal proportional to the phase difference between the input signal and the reference signal is produced at one of the output terminals of the first and second bi-stable circuit in accordance with whether the input signal phase-advances more than the reference signal or not.
399683
Gowling Lafleur Henderson Llp
Sony Corporation
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