1975-12-16
1979-01-16
Jackmon, Edith S.
58 50R, G04C 300, G04B 1930, G04B 2700
Patent
active
041342542
ABSTRACT:
An electronic timepiece device comprising a plurality of coupled counter circuits designed to carry out a successive frequency division of signals issued from a frequency oscillator and supply time-indicating count signals to a time display section, wherein any of the coupled counter circuits is connected to a memory circuit for storing a certain number of counts representing the fraction of a correct time which should be exchanged for that of an incorrect time indicated by the counter circuits due to the frequency oscillating error originally accompanying the frequency oscillator or a certain number of counts by which the operation of the counter circuits should be advanced or delayed to correct the fraction of an incorrect time resulting from said error; a detector for detecting the point of time at which correction of time should be made detects a particular point of time counted by the plural coupled counter circuits as a specified point of time for correction; and upon detection of the specified point of time for correction, said correction time detector sends forth a time correction-instructing signal to the memory circuit coupled to a prescribed counter circuit to correct a count currently presented in said counter circuit to an extent equal to a correction base value previously stored in the corresponding memory circuit.
REFERENCES:
patent: 3792577 (1974-02-01), Fujita
patent: 3812669 (1974-05-01), Wiget
patent: 3895486 (1975-07-01), Hammer et al.
patent: 3922844 (1975-12-01), Sakamoto
patent: 3961472 (1976-06-01), Riehl
Casio Computer Co. Ltd.
Jackmon Edith S.
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