Phase and/or frequency comparators

Details Phase and/or frequency comparators Phase and/or frequency comparators

1975-09-16

1977-04-26

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307232, 307216, H03B 304

Patent

active

040204227

ABSTRACT:
A phase comparator indicating a phase difference range of n .times. 360.degree., between two input signals, comprising edge triggered shift registers, for dividing the input signals by n, means for modulating the width of the resulting output pulses in proportion to the phase difference of the input signals, and integrating means to combine the modulated pulses into a time-averaged signal which is indicative of the phase difference.

REFERENCES:
patent: 3501701 (1970-03-01), Reid
patent: 3599102 (1971-08-01), Mous
patent: 3671876 (1972-06-01), Oshiro
patent: 3710140 (1973-01-01), Volmerange
patent: 3714463 (1973-01-01), Laune
patent: 3723889 (1973-03-01), Oberst
patent: 3735324 (1973-05-01), Phillips
patent: 3755747 (1973-08-01), Letosky
patent: 3866133 (1975-02-01), Debloois et al.

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