Electronic timepiece

Details Electronic timepiece Electronic timepiece

1986-03-05

1988-08-16

Roskoski, Bernard

Horology: time measuring systems or devices

Chronological

With manually actuated display

368185, 368187, G04C 1700

Patent

active

047649100

ABSTRACT:
An electronic timepiece includes a plurality of light-receiving elements arranged to receive external light, a light-receiving condition discriminator for discriminating a light-receiving condition of each light-receiving element, and a circuit to be controlled in response to an output signal from the light-receiving condition discriminator. The light-receiving condition discriminator discriminates that the light-receiving condition of a central one of three light-receiving elements among the plurality of light-receiving elements is different from those of end light-receiving elements, and thereupon generates an output signal.

REFERENCES:
patent: 4468131 (1984-08-01), Bui et al.
patent: 4671671 (1987-06-01), Suetaka

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