Electronic clock having an analog display and a plurality of dig

Details Electronic clock having an analog display and a plurality of dig Electronic clock having an analog display and a plurality of dig

1979-01-17

1981-04-14

Miska, Vit W.

Horology: time measuring systems or devices

With calendar indicator

Electro-optical

368 66, 368 76, 368 82, G04B 1924, G04B 900, G04C 1900

Patent

active

042623456

ABSTRACT:
A watch comprises an electronically controlled digital display of the month, day of the month, day of the week, or other information, in addition to a time-indicating analog display system. A single control circuit, using integrated circuit technology, controls the operation of the two display systems. A synchronizing arrangement for the synchronous control of the two display systems and a battery-condition control circuit to monitor the state of the watch battery are also included. The combination of these features provides the user with a watch which can be set and corrected in a simple manner, which insures a synchronous link between all of the data being displayed, and which provides a timely warning when a battery change is necessary.

REFERENCES:
patent: 3815351 (1974-06-01), Vovelle
patent: 3945191 (1976-03-01), Van Berkum
patent: 3948036 (1976-04-01), Moronawa
patent: 3952176 (1976-04-01), Holder et al.
patent: 4163193 (1979-07-01), Kamiya

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