| 摘要 |
PURPOSE:To simplify the correction of time differential and time by quick advance of a step motor after the release of the stoppage in an external control member for stopping the time indication based on the counts of time corresponding to the stoppage when the time indication is stopped. CONSTITUTION:Upon the pulling of a crown 33 for correcting the time, a lever 35 is driven to get in contact with a pin A37 connected to a terminal A36 of an electronic circuit 21 while engaging a heart cam 38 integral with a rotor 29 to lock it in place. The electronic circuit 21 counts time corresponding to this state. After the correction of time, the crown 33 is pushed in to open a terminal 36 and the count is transmitted to a step motor and added to a normal drive signal to be fed, whereby the step motor is advanced quickly. |
