| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an on-vehicle radio controlled clock capable of correcting time stably at a low cost. <P>SOLUTION: The on-vehicle radio controlled clock comprises receiving means 11a and 11b for receiving a time signal, a fluorescent display tube 15 having a grid electrode 18 which is to be switched on and off according to the driving state of the vehicle and displaying time when the electrode is switched on, and a detection means 14 for detecting whether the grid electrode 18 is switched on or off and a control means 14 which makes the receiving means 11a and 11b receive a time signal when the detection means judges the electrode 18 to be switched off and correcting time to be displayed on the tube 15 to the time based on the time signal received. <P>COPYRIGHT: (C)2004,JPO |
