Electronic timepiece with analogue display

Details Electronic timepiece with analogue display Electronic timepiece with analogue display

1985-03-25

1987-05-19

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368 87, 368155, G04B 1904

Patent

active

046663118

ABSTRACT:
A chronograph watch comprises a first motor controlled by a quartz resonator coupled to a first simple integrated circuit. This motor drives, through gearing, the time indicating members of the watch. A second motor controlled by a second quartz resonator coupled to a second simple integrated circuit, identical to said first integrated circuit, can be operated at a higher frequency when a switch, which is operable manually by means of a pushbutton and interposed between electrical ground and a terminal of the second integrated circuit, is open. The second motor drives, through further gearing, a chronograph hand coupled to a minute counter and to an hour counter. Thus the chronograph indicates fractions of seconds without the timepiece requiring expensive circuits or having an excessive electrical power consumption.

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patent: 4523857 (1985-06-01), Ushikoshi
patent: 4537514 (1985-08-01), Moriya
patent: 4540297 (1985-09-01), Dubois

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