Delay time measuring device

Details Delay time measuring device Delay time measuring device

1989-06-28

1990-07-17

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

356 5, G04F 800, G01C 308

Patent

active

049425617

ABSTRACT:
A delay time measuring device for measuring a delay time of continuous pulses wherein the averaging effect is improved. The device comprises a rough estimation counter means and a precision measuring means, and the rough estimation counter means makes a rough measurement of a delay time by counting clocks of a reference signal generating means between a starting pulse and a stopping pulse. The precision measuring means performs a precision measurement of a delay time by synchronizing an output signal of a voltage controlled oscillator with the stopping pulse and measuring a difference in phase between the output signal of the voltage controlled oscillator and a signal generated by the reference signal generating means. Then, a delay time of pulses is measured by synthesizing a rough measured value by the rough estimation counter with the precision measured value.

REFERENCES:
patent: 3037166 (1962-05-01), Alexander
patent: 4413904 (1983-11-01), Hamada et al.
patent: 4531833 (1985-07-01), Ohtomo
patent: 4560271 (1985-12-01), Fumio
patent: 4615617 (1986-10-01), Frank et al.
patent: 4620788 (1986-11-01), Giger

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