Patent ID: 7701807

Claim:
An analog electronic timepiece comprising: a clock signal supplying unit configured to generate and supply a reference signal for clocking; a step motor that drives hand motions of time hands; a driving unit that has a signal line to drive the step motor; an amplifying unit configured to amplify a counter electromotive force generated by the step motor; an impact detecting unit configured to detect an impact applied externally based on an output signal level of the amplifying unit; and a controlling unit configured to control to drive the step motor by providing an intermittent driving pulse to the driving unit based on the reference signal supplied from the clock signal supplying unit when the time hands are in a hand-driven state, and to control to brake the step motor when an impact is detected by the impact detecting unit while the time hands are in a non-hand-driven state, wherein the controlling unit is configured to control the signal line to be in an OPEN state when the time hands are in the non-hand-driven state, except when a pulse is output from the amplifying unit during which the controlling unit controls the signal line to be in a HIGH or a LOW state.