| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an on-vehicle automatically correctable clock capable of performing a stable time correction operation without using a signal from a starting switch/an accessory switch. <P>SOLUTION: The on-vehicle automatically correctable clock has reception means 11a, 11b used to receive a time signal; a battery-voltage detection circuit 16 used to detect a voltage of a battery on a vehicle; and a control circuit 14 by which the reception means 11a, 11b receive the time signal, when the voltage of the battery detected by the detection circuit 16 becomes a prescribed threshold value or lower, and which performs the time correction operation used to correct the time on the basis of the received time signal. <P>COPYRIGHT: (C)2004,JPO |
