Timer of electric timepiece

A time keeping device of an electric timepiece comprising one motor that can rotate in the forward direction and the reverse direction, a branch mechanism, a merge mechanism, and two wheel trains that are driven by the motor, branched by the branch mechanism, and merged by the merge mechanism, between the branch mechanism and the merge mechanism, wherein one wheel train is rotated by the forward driving of the motor, the other wheel train is rotated by the reverse driving of the motor, and the time keeping device displays time using a minute hand and an hour hand based on the driving of the one wheel train, and displays only a calendar without displaying time using the minute hand and the hour hand, based on the driving of the other wheel train.

A time keeping device of an electric timepiece comprising an electric time keeping device (ETK) that counts time based on a signal output from a time unit signal generator, a mechanical time keeping device (MMK) that has one electromechanical converter (MT) and two wheel trains (GW1 and GW2) and drives time display hands, and a mechanism that synchronizes a holding time (Tek) of the electric time keeping device with a holding time (Tint) of the mechanical time keeping device, wherein

• the electromechanical converter (MT) has one motor that can rotate in the forward direction and the reversed direction, the two wheel trains (GW1 and GW2) are branched by a branch mechanism and are merged by a merge mechanism, one wheel train is rotated by the forward driving of the motor, the other wheel train is rotated by the reverse driving of the motor, and the time keeping device displays time using a second hand, a minute hand and an hour hand based on the driving of the one wheel train, and displays time using the minute hand and the hour hand without using the second hand to display time, based on the driving of the other wheel train.

A time keeping device of an electric timepiece comprising an electric time keeping device (ETK) that counts time based on a signal output from a time unit signal generator, a mechanical time keeping device (MMK) that has one electromechanical converter (MT) and two wheel trains (GW1 and GW2) and drives time display hands, and a mechanism that synchronizes a holding time (Tek) of the electric time keeping device with a holding time (Tint) of the mechanical time keeping device, wherein

• the electromechanical converter (MT) has one motor that can rotate in the forward direction and the reversed direction, the two wheel trains (GW1 and GW2) are branched by a branch mechanism and are merged by a merge mechanism, one wheel train is rotated by the forward driving of the motor, the other wheel train is rotated by the reverse driving of the motor, and the time keeping device displays time using a minute hand and an hour hand based on the driving of the one wheel train, and displays only a calendar without displaying time using the minute hand and the hour hand, based on the driving of the wheel train pinion.