Digital phase correlator

Details Digital phase correlator Digital phase correlator

1985-01-04

1986-08-05

Heyman, John S.

Multiplex communications

Wide area network

Packet switching

328 63, 370108, 375107, 307269, 377 72, H04J 306, G01R 2504, H03L 700

Patent

active

046045821

ABSTRACT:
A digital phase correlator compares the relative phase of two or more high-frequency clocks and corrects for any detected phase difference. The phase detector includes a pair of flip-flops whose output is an indication of which of the two clock pulses is leading the other. The output of the flip-flop controls, through a circuit including a rotating shift register and a multitap delay line, the delay introduced to one of the clocks in a manner such that the phase difference between the clocks is reduced to a minimum.

REFERENCES:
patent: 3028552 (1962-04-01), Hahs
patent: 3605026 (1971-09-01), Bowden
patent: 3908084 (1975-09-01), Wiley
patent: 4012598 (1977-03-01), Wiley
patent: 4241418 (1980-12-01), Stanley
patent: 4290022 (1981-09-01), Puckette
patent: 4352195 (1982-09-01), Dautremay et al.
patent: 4359770 (1982-11-01), Suzuka
patent: 4386323 (1983-05-01), Jansen

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