Horology: time measuring systems or devices – Time interval – Electrical or electromechanical
Patent
1992-07-30
1994-10-18
Roskoski, Bernard
Horology: time measuring systems or devices
Time interval
Electrical or electromechanical
G04F 800, G04F 1000
Patent
active
053574907
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
Mitsubishi Denki & Kabushiki Kaisha
Roskoski Bernard
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