High resolution timer using low resolution counter

Details High resolution timer using low resolution counter High resolution timer using low resolution counter

1994-04-14

1996-04-23

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

G04F 800

Patent

active

055110479

ABSTRACT:
Accurate measurement results can be obtained without increasing the number of bits of a timer.
A timer 1 performs counting with low-speed clocks immediately after input pulse is inputted. When the value counted by the timer with the low-speed clock coincides with the set value of a switching set value register 4, high-speed clocks are inputted to the timer 1 by a clock switching circuit 6 which is switched by the output of a comparison circuit 5.

REFERENCES:
patent: 3037166 (1962-05-01), Alexander
patent: 3218553 (1965-11-01), Peterson et al.
patent: 3887870 (1975-06-01), Grosseau
patent: 4234881 (1980-11-01), Stauers
patent: 4737942 (1988-04-01), Nishibe

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