Horology: time measuring systems or devices – With calendar indicator – Electro-optical
Patent
1980-05-21
1982-06-15
Miska, Vit W.
Horology: time measuring systems or devices
With calendar indicator
Electro-optical
368 67, 368 71, 368 82, G04B 1924, G04B 1930, G04C 1900
Patent
active
043354530
ABSTRACT:
In an electronic watch the indication of the time (hours, minutes and possibly seconds) is given in analog form by means of a first passive electro-optic display cell. The display segments of this first display cell are arranged radially with respect to a central point, and the activated segments thereof have the appearance of the conventional hands of an analog watch. The watch comprises a second passive electro-optic display cell furnishing information in digital form, for example indicating the day of the week and the date. So that only the second cell need be provided with an illuminating device, the watch comprises a selector which is manually operable by means of a push-button which, when it is operated, causes the time to be displayed by the second cell at the same time as the illuminating device thereof is operated. This arrangement enables the user to know the time in the dark without it being necessary to provide the first cell with an illuminating device.
REFERENCES:
patent: 3864905 (1975-02-01), Richardson
patent: 3911665 (1975-10-01), Van Berkum
patent: 3991552 (1976-11-01), Ho
patent: 4212159 (1980-07-01), Noble et al.
patent: 4246602 (1981-01-01), Sekita et al.
patent: 4277840 (1981-07-01), Sekita et al.
"LCD Watch Designed to Fit Thin Case", Electronics, 9/16/76, vol. 49, No. 19, pp. 8E, 10E.
Ebauches Electroniques S.A.
Miska Vit W.
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