Patent ID: 8251575

Claim:
An electronic timepiece comprising: a stepper motor that has a coil and a rotor; an ordinary-driving-pulse generating unit that drives the stepper motor; a rotation detecting unit that detects rotation and non-rotation of the rotor; a correction-driving-pulse generating unit that generates a correction driving pulse if the rotation detecting unit determines the non-rotation, based on a detection result; an impact detecting unit that detects a vibration of the rotor, the vibration generated by external impact; and a locking pulse output unit that outputs a locking pulse, the locking pulse braking and controlling the stepper motor if the impact detecting unit detects the impact, wherein the electronic timepiece further comprises an impact detection control unit that prohibits the detecting operation of the impact detecting unit when the non-rotation is detected, and permits the detecting operation of the impact detecting unit when the rotation is detected.