Method for measuring time and structure therefor

Details Method for measuring time and structure therefor Method for measuring time and structure therefor

1995-10-30

1998-08-18

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

368117, G04F 800

Patent

active

057966826

ABSTRACT:
A time measurement circuit (100) measures a time interval between two events. The time measurement circuit (100) includes two digital phase counters (10' and 10"), a period counter (210), and a digital calculator (310). The first digital phase counter (10') converts a time interval from a leading edge of a start signal to a leading edge of clock signal following the start signal into a first binary number. The second digital phase counter (10") converts a time interval from a leading edge of a stop signal to a leading edge of clock signal following the stop signal into a second binary number. The period counter (210) converts a time interval between the two leading edges of the clock signal into a third binary number. The digital calculator (310) combines the three binary numbers to generate a number representing the time interval between the start signal and the stop signal.

REFERENCES:
patent: 4303983 (1981-12-01), Chaborski
patent: 4470082 (1984-09-01), Van Pelt et al.
patent: 5020038 (1991-05-01), Swapp et al.
patent: 5263012 (1993-11-01), Muirhead

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