Digital phase comparing circuit

Details Digital phase comparing circuit Digital phase comparing circuit

1988-12-22

1990-05-22

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 307511, 307514, 328133, 328109, H03K 1900, H03K 500

Patent

active

049280260

ABSTRACT:
A digital phase comparing circuit includes a pair of circuits for detecting each rise of a pair of input signals, respectivaly, and outputting a pair of detection signals, a pair of flip-flops which are set in response to the corresponding detection signal, respectively, and a logic gate circuit responsive to a pair of outputs from the pair of flip-flops and resetting the pair of flip-flops when the output conincide with each other. Each output of the flip-flops has a pulse width corresponding to a phase difference between the pair of input signals. It is thus possible to avoid an erroneous operation in the subsequent circuit, to facilitate the layout of the circuit, and to simplify the process thereof.

REFERENCES:
patent: 3610954 (1971-10-01), Treadway
patent: 4291274 (1981-09-01), Suzuki et al.
patent: 4739278 (1988-04-01), Des Brisay, Jr. et al.
patent: 4751469 (1988-06-01), Nakagawa et al.
patent: 4764737 (1988-08-01), Kaatz

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