Electronic chronometer with check up function and its check up method

Application Number  00128374 Application Date  2000.11.24
Publication Number  1298132 Publication Date  2001.06.06
Priority Information   1999/11/24 JP 333525/99  
Applicant(s) Name  Seiko Epson Corp.  
Inventor(s) Name  Nakamiya Shinji;Takahashi Katsukichi  
Patent Agency Code  72001 Patent Agent  wu zengyong
AbstractAn electrical timepiece comprises external input units for receiving an external input signal, a motor unit for driving an analog hand unit for displaying time, a battery unit capable of charging, a voltage detect circuit for measuring the voltage of the stored electricity in the battery and comparing the voltage with a reference voltage, and a stored electricity unit discharge control circuit for starting discharge from the battery when an external input signal is received by one of the external input unit, and for stopping discharge from the battery when the comparison result by the voltage detect circuit satisfies a prescribed condition.