1976-01-12
1978-07-04
Schaefer, Robert K.
58 855, G04C 300
Patent
active
040980707
ABSTRACT:
A digital display electronic wristwatch including a quartz crystal high frequency time standard having a natural frequency in the MHz range is provided. The quartz crystal time standard is incorporated into an oscillator circuit that produces a high frequency time standard signal having the same frequency as the frequency of vibration of the time standard. A divider circuit is formed from a plurality of series-connected divider stages and produces a low frequency reference signal in response to the time standard signal. Series-connected counters are coupled to the divider to produce time-keeping signals in response to the low frequency reference signal being applied thereto, and digital display elements are adapted to display time in response to the time-keeping signals produced by the respective series-connected counters.
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Kabushiki Kaisha Suwa Seikosha
Miska Vit N.
Schaefer Robert K.
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