Timing signal generation circuit

Details Timing signal generation circuit Timing signal generation circuit

1994-11-30

1996-02-13

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

327158, G04F 800, H03K 5159

Patent

active

054916739

ABSTRACT:
A timing generator which is capable of generating a timing signal with high resolution and accuracy which is not affected by the changes in temperature and power supply voltage or the self-generated heat of the circuit component. The timing signal generator can generate a timing signal which has a delay time combined with a large delay time which is greater than the clock signal period and a small delay time which is smaller than the clock signal period. The timing signal generator includes a plurality of variable delay devices serially connected one another, a phase comparator which compares a total delay time of the variable delay devices with a clock signal and generates a voltage signal indicative of the difference between the two, a feed back circuit that feeds back the voltage signal from the phase comparator to the variable delay devices to form a phase locked loop so that the total delay time in the variable delay devices is equal to the one period of the clock signal, a synchronous delay circuit for generating a large delay time which is proportional to the clock signal period, a selector circuit for selecting one combination of the large delay time from the synchronous delay circuit and a small delay time from one of the variable delay devices.

REFERENCES:
patent: 4516861 (1985-05-01), Frew et al.
patent: 4788670 (1988-01-01), Hofmann et al.
patent: 4982387 (1991-01-01), Trent

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