Electronic wristwatch with alarm function

Details Electronic wristwatch with alarm function Electronic wristwatch with alarm function

1980-02-27

1983-03-15

Miska, Vit W.

Horology: time measuring systems or devices

Plural timepiece system or system device

With wireless synchronization

368156, 368250, G04C 1102, G04F 500, G04C 2116

Patent

active

043769926

ABSTRACT:
An electronic wristwatch without mechanically driven hands has an electromagnetic output which is sensed for measuring the timing rate. A modulated signal applied to the coil of an alarm sounding device produces the electromagnetic field for sensing. The display is fully illuminated while timing in order to eliminate stray electric fields.

REFERENCES:
patent: 3940919 (1976-03-01), Yasuda et al.
patent: 3946591 (1976-03-01), Yanagawa et al.
patent: 3998044 (1976-12-01), Yamauchi et al.
patent: 4104865 (1978-08-01), Sasaki
patent: 4144706 (1979-03-01), Willis
patent: 4216647 (1980-08-01), Hattori

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