| 摘要 |
<p>PURPOSE:To eliminate the restriction of the providing place of a clock, which receives signals including a time signal and corrects the time. CONSTITUTION:When a time becomes 23:59:30'', a dialer 1 is connected to the telephone line of a 'No. 117 time-information service'. When the time information on the hour is detected, the measured time of a time measuring circuit 4 is set at 0:00, and the telephone line is cut off. When the present time becomes the time zone stored in a time memory circuit 5, a control circuit 7 reads the measured time of the time measuring circuit 4. The read-out time is converted into the signal for sending out the time data to the hour and the minute based on the accumulated number of dates from the first of January with one minute as one frame with binary code in series. The signal is modulated with the carrier wave of 40kHz in a modulating circuit 9. The signal is transmitted from an antenna 10. A clock device receives the signal with an antenna and corrects the time, which is displayed with the time hand of a display device.</p> |
