| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically correct time of an internal clock incorporated in electronic equipment. SOLUTION: A reference signal is periodically transmitted by a reference signal transmitting means 24, and when a time approaches a correcting operation setting time, a reference signal receiving means 32 of a time updating device 30 is connected to the reference signal transmitting means 24 so as to be turned into a receiving state, and the reference signal transmitted by the reference signal transmitting means 24 is received by the reference signal receiving means 32 which is turned into a receiving state, and the time of an internal clock 41 is corrected with a timing in which the reference signal is received by an internal clock correcting means 33.</p> |
