Automatically correcting electronic timepiece for selected signal receiving wireless receiver

摘要

An electronic timepiece which corrects time automatically in response to external time information signals. The timepiece includes a first timekeeping circuit for keeping a standard time and a receiver for selectively receiving external signals. A checking circuit checks the external signal to determine whether it contains a time information signal and which provides a current time signal in response to receipt of a time information signal. A second timekeeping circuit receives and stores the current time signal and a setting circuit sets the second timekeeping circuit to the current time in accordance with the current time signal. A correction circuit provides a correction signal and corrects the first timekeeping circuit to the current time in accordance with the correction signal and the current time signal. The correction is applied periodically at a rate which is a function of the error and the time between sucessive reciepts of the time information signal.