Patent
1976-09-10
1978-06-13
Schaefer, Robert K.
58 23R, G04B 1930
Patent
active
040941396
ABSTRACT:
A display control circuit for an electronic timepiece for controlling a timer circuit to vary the length of time for which the display of time or calendar information is to be made. In one preferred embodiment, a timer circuit includes a first section of flip-flops for setting a predetermined length of time when a first external switch is operated, and a second section of flip-flops for setting time interval in addition to the predetermined length of time when a second external switch is operated. A control circuit means is coupled to the timer circuit for controlling the same to vary the total length of time to be set by the timer circuit. In another preferred embodiment, the timer circuit is energized with selected one of frequency signals from a frequency converter of the electronic timepiece to set the length of time in dependence on the selected one of the frequency signals. The frequency signals are selected by operating the external switch a predetermined number of times or by continuously operating the external switch for a prescribed time interval.
REFERENCES:
patent: 3756013 (1973-09-01), Berget et al.
patent: 3943696 (1976-03-01), Portmann et al.
patent: 3988597 (1976-10-01), Yamaguchi
patent: 4028878 (1977-06-01), Droz et al.
Nishikubo Yasuhiko
Nomura Yasushi
Citizen Watch Company Limited
Jordan Frank J.
Miska Vit W.
Schaefer Robert K.
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