| 摘要 |
<p>PURPOSE:To obtain the time synchronized with the other timepiece device by inputting a synchronizing signal from the other timepiece to a titled device and allowing the synchronizing signal to follow up the stepping of an internal calender timepiece circuit. CONSTITUTION:The synchronizing signal 12 and a relational discrimination signal 13 from a calender timepiece circuit 5 are respectively applied to a synchronizing signal interruption detection circuit 1 and an advance/delay discrimination circuit 2. The signal is monitored by the signal 13 in the circuit 1 and the presence/absence of the synchronizing signal are continuously judged for several seconds. The synchronizing signal interruption signal is applied to a frequency dividing control circuit 3 in the stage of the absence thereof. The signal 13 and the signal 12 are compared in the circuit 2. Whether there is the signal 2 in the first half of the signal 13 or whether there is the signal 12 in the second half is discriminated and the advance/delay signal is applied to the circuit 3. The circuit 3 applies a command signal 16 for the frequency division by 1/n to a variable frequency dividing circuit 4 by the signal 14 and the signal 15 when the synchronizing signal is interrupted. Said circuit applies a command signal 18 for the frequency division by 1/(n-1) when there is the synchronizing signal and the delay is discriminated. The time synchronized with the other timepiece deice is thus obtd.</p> |
