Electronic watch

Details Electronic watch Electronic watch

1978-04-20

1981-06-30

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368217, G04B 1904, G04C 300

Patent

active

042766265

ABSTRACT:
In an electronic watch having an oscillator for producing a time base signal and stepping motor, drive pulses are produced for normally driving the motor under normal load conditions. The rotation and non-rotation of the motor in response to the last drive pulse is detected in response to a detecting pulse, and if non-rotation has been detected, a predetermined plurality of correction pulses are applied to the motor for driving same, the correction pulses being sufficient to drive the motor under a high torque loading. In this way, power consumption is decreased since a high power driving is saved only for high torque loading conditions.

REFERENCES:
patent: 4028880 (1977-06-01), Ueda
patent: 4032827 (1977-06-01), Debratz et al.
patent: 4114364 (1978-09-01), Takahishi
patent: 4129981 (1978-12-01), Nomoru

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