Method and apparatus for high-precision measurement of...

Details Method and apparatus for high-precision measurement of... Method and apparatus for high-precision measurement of...

2007-12-25

2007-12-25

Nghiem, Michael P. (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C324S076390

Reexamination Certificate

active

11329104

ABSTRACT:
A method and apparatus for measuring the frequency of a cyclically-repeating electrical signal by: passing the electrical signal through a network of sequentially-activated gates, in which the first gate detects the leading edge of each cycle of the electrical signal, and each of the remaining gates, when activated, applies a predetermine propagation delay to the detected leading edges; determining the gates which were activated at the beginning, and at the end, of a predetermined time window; determining the difference in the total propagation delays at the outputs of the activated gates; and utilizing the differences in the total propagation delays in determining the frequency of the electrical signal.

REFERENCES:
patent: 4769777 (1988-09-01), Bittle et al.
patent: 6194937 (2001-02-01), Minami
patent: 2004/0059524 (2004-03-01), Watson et al.
patent: 2004-228329 (2004-08-01), None

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