Digital indication type speedometer

Details Digital indication type speedometer Digital indication type speedometer

G - Physics

01

P

73/164, 340/148.

G01P 1/07 (2006.01) G01P 3/489 (2006.01)

Patent

CA 1166716

ABSTRACT OF THE DISCLOSURE: A digital indication type speedometer comprising a speed counter for counting pulses emitted in proportion to a vehicle speed for a given gate time, an indication register for latching a value to be indicated commensurate to an output from the speed counter and an indicator for indicating the value latched in the indication register. A hysteresis processing circuit is also provided for rewriting the value latched in said indication register in accordance with an output of the speed counter only when a difference between the output of this speed counter and the value latched in the indication register is not within tolerance limit upon comparison therebetween, so that response of the indication is excellent during acceleration or deceleration, and no flickering is observed during running at a constant speed.

367067

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