Device for digitally measuring intervals of time

Details Device for digitally measuring intervals of time Device for digitally measuring intervals of time

1990-03-14

1993-03-30

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

368120, G04F 800

Patent

active

051990083

ABSTRACT:
An apparatus for measuring intervals of time, which requires only a simple counter circuit (15) and delay circuit (17), through which electrical pulses travel. The counter circuit (15) counts pulses during the time interval. During each count of the counter circuit (15), the delay circuit (17) tracks the position of the pulse. The output of the two circuits are a counter word and a vernier word, such that the counter word may be multiplied by the period of each pulse, and the product added to the vernier word, to obtain the time interval measurement. The apparatus may also be used for frequency measurement.

REFERENCES:
patent: 3675127 (1972-07-01), McKiernan
patent: 4439046 (1984-03-01), Hoppe
patent: 4516861 (1985-05-01), Frew et al.
patent: 4595992 (1986-06-01), Drogin
patent: 4875201 (1989-10-01), Dalzell
patent: 4933898 (1990-06-01), Nuytkens et al.
Browne, "Compact IFM Module Tracks Fast Pulses From 125 to 250 MHz", Microwaves & RF, Sep. 1989, pp. 161-165.
Kleinfelder, et al., "MTD132-A New Sub-Nanosecond Multi-hit CMOS Time-to-Digital Converter", Nov., 1990.

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