Frequency measurement circuit

Details Frequency measurement circuit Frequency measurement circuit

2005-07-12

2005-07-12

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

C324S076480

Reexamination Certificate

active

06917191

ABSTRACT:
A frequency measurement circuit measures a frequency of an input signal. The frequency measurement circuit includes a frequency measurement unit for counting a reference clock during a counting period having a predetermined number of waves of the input signal. The frequency measurement unit counts the reference clock by using a lighter amount of weighting to each count at a starting time and an ending time of the counting period than the amount of weighting at the other times of the counting period.

REFERENCES:
patent: 2831162 (1958-04-01), Gross
patent: 2992384 (1961-07-01), Malbrain
patent: 3518540 (1970-06-01), Roberts
patent: 3909714 (1975-09-01), Nakano
patent: 4541105 (1985-09-01), Lee et al.
patent: 4683385 (1987-07-01), Kaneko
patent: 4745356 (1988-05-01), Henze
patent: 4882740 (1989-11-01), Abe et al.
patent: 5095264 (1992-03-01), Hulsing, II
patent: 5442278 (1995-08-01), Fan Chiang et al.
patent: 57-211070 (1982-12-01), None
patent: 2-141024 (1990-05-01), None
patent: 1 239 618 (1986-06-01), None
patent: 1 247 772 (1986-07-01), None
patent: 1 596 462 (1990-09-01), None
patent: 1 636 786 (1991-03-01), None

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