1976-04-19
1978-06-20
Witkowski, Stanley J.
58 23R, 58127R, G04C 300, G04C 1700, G04C 1900
Patent
active
040954137
ABSTRACT:
An electronic timepiece with a display device, with an oscillator as a time base, with a frequency divider, which steps down the frequency of the oscillator to the desired clock frequency, with counting means for counting the clock pulses, and with decoding circuits. The display is a matrix of electrodes positioned to define time marks and actuated by signals from the decoding circuits. The one set of electrodes of the time marks are lines and the other set of electrodes of the time marks are columns of a matrix-like arrangement and the product of the number of lines and the number of columns is equal to the number of the time marks employed. Upon driving the lines and the columns only one respective time mark responds. The lines are constructed as concentric rings and the columns of the matrix-like arrangement are constructed as ring sections concentric to them. The rings and the ring sections together with the connections, arranged concentrically with respect to them, for one respective electrode of the time marks are printed on an insulating carrier and the rings with the corresponding connections for the time marks are connected over the other rings and insulated from them.
REFERENCES:
patent: 3456152 (1969-07-01), Andersen
patent: 3540209 (1970-11-01), Zatsky et al.
patent: 3992875 (1976-11-01), Kashio
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