Electronic timepiece and method for testing operation of the sam

Details Electronic timepiece and method for testing operation of the sam Electronic timepiece and method for testing operation of the sam

1977-10-18

1979-04-24

Schaffer, Robert K.

58 855, G04B 1932

Patent

active

041505379

ABSTRACT:
An electronic timepiece having a multi-digit display of time data and a plurality of frequency divider circuits which generates time data, which comprises operation testing and time correcting means including at least two test terminals, and also a manually operable selecting switch and a manually operable correcting switch. The electronic timepiece also comprises a circuit means which is arranged such that varying combinations of logic level voltages applied to the test terminals can be utilized to test various modes of operation of the frequency divider circuits, a part of such testing being accomplished in conjunction with a signal of relatively high frequency applied to a terminal of one of the manually operable switches.

REFERENCES:
patent: 3768247 (1973-10-01), Fujita
patent: 3810356 (1974-05-01), Fujita
patent: 3834152 (1974-09-01), Nishimura et al.
patent: 3886726 (1975-06-01), Williams et al.
patent: 3943696 (1976-03-01), Portmann et al.
patent: 3953964 (1976-05-01), Suppa et al.

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