High-resolution electronic chronometry system

Details High-resolution electronic chronometry system High-resolution electronic chronometry system

1985-05-15

1987-01-20

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

364569, G04F 800

Patent

active

046377336

ABSTRACT:
An electronic chronometry system for measuring a time T between a starting instant and a stopping instant which utilizes a ramp vernier having time expansion in order to provide fine counting between a starting instant and a beginning of a clock signal and for measuring a second time between the stopping instant and a second beginning of a clock signal. The device also utilizes a rough counting device to count the number of clock periods between the beginnings of the two clock signals. The system further utilizes a compensation circuitry for determining the nonlinearity in the ramp signal in order to determine the corrective term which must be applied. The corrective term is determined during a calibration cycle as a function of the measured parameters including the first and second time periods which are measured.

REFERENCES:
patent: 4303983 (1981-12-01), Chaborski
patent: 4523288 (1985-06-01), Hayashi
Instruments and Experimental Techniques, vol. 24, No. 1, Jan./Feb. 1981, part 1, pp. 78-83, New York.

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