Digital display type timepiece

Details Digital display type timepiece Digital display type timepiece

1975-08-05

1977-12-27

Jackmon, Edith S.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

58 58, 58153, 340324M, G04B 1924, G04C 2132, G08B 2300

Patent

active

040646874

ABSTRACT:
A digital display type timepiece has a 2-digit decimal numerical figure display section divided in a manner to correspond to an hour and a minute display with a dividing display mark therebetween. A month and date-of-month display can also be made, by switching, on the same decimal display section. A time display is effected on the decimal display section by count outputs of time counters adapted to be driven by reference signals of an oscillator. During the time display, the display mark is flashed in a predetermined second cycle by the reference signal of the oscillator. The date display is made on the same display section by count outputs of date-of-month counters adapted to be driven by carry signals of the time counters. When switching is made from the time display to the date display, the display mark is correspondingly switched into a state different from the flashed state.

REFERENCES:
patent: 3802182 (1974-04-01), Fujita
patent: 3839856 (1974-10-01), Dargent
patent: 3971012 (1976-07-01), Morokawa et al.
patent: 3992871 (1976-11-01), Numabe

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