| 摘要 |
PURPOSE:To enable to set a time of a clock to be corrected from any time indicating state by making to always give time signals sinchronized with the clock ticking motion. CONSTITUTION:When 1Hz signal put out from a clock circuit 5 is given to a hand indication device through a driving circuit 9, the second hand 3a performs the second motion. And when the 1Hz signal is given to a time signal giving circuit 6, the 3,520Hz signal, 880Hz signal and 440Hz signal are given from a speaker 7 synchronizing with the second hand 3a step-driven motion. At this moment the clock to be corrected is set by the indicating time of the hand indicating device 3 and the clock to be corrected is started timing with the time signal from the speaker 7 and with the second hand step-driven motion to correctly set the time. When the minute hand 3b exceeds 59 minutes, the switch 15 turns ON, and when the contents of the hexadecimal counter memorizing the second hand position reaches 57 seconds the ratio receiver 10 receives the correct time signal to correct the second hand 3a to the correct 0 second. |
