Digital phase comparator circuit producing sign and magnitude ou

Details Digital phase comparator circuit producing sign and magnitude ou Digital phase comparator circuit producing sign and magnitude ou

1982-08-18

1985-03-19

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307479, 307514, 307528, 328109, 328133, H03K 19094, H03K 1921

Patent

active

045061750

ABSTRACT:
A phase detector for digital signals, such as television sync signals, provides a signed short path output of the phase difference between the signals. It features a means for determining which of the signals is leading and lagging, which means also provides the sign signal. A window signal is generated and clock pulses are counted during the duration of this signal. A register can provide an exact phase difference measurement or a coarse/fine output signal can be provided.

REFERENCES:
patent: 4237423 (1980-12-01), Rhodes
patent: 4308500 (1981-12-01), Avis
patent: 4375693 (1983-03-01), Kuhn
patent: 4445224 (1984-04-01), Ihira et al.
patent: 4446389 (1984-05-01), Williams et al.

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