| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce power consumption of a radio controlled clock and to improve the reliability of acquiring time information. <P>SOLUTION: A radio controlled clock 1 includes: a reception processing part 7 which receives a communication signal transmitted by a communication system including a pilot channel signal and mixes the received communication signal and a local oscillation signal to acquire an intermediate frequency signal and acquires the pilot channel signal from the acquired intermediate frequency signal; a field intensity measurement part 26 which measures a field intensity of the acquired intermediate frequency signal; a reception retry determination part 44 which determines the number of retries for reception to acquire the pilot channel signal from the received communication signal, so as to be equal to or lower than that in a field intensity higher than the field intensity measured by the field intensity measurement part 26; and a reception operation instruction part 46 which repeatedly instructs the reception processing part 7 to acquire the pilot channel signal in accordance with the determined number of reception retries when the reception processing part 7 cannot acquire the pilot channel signal from the communication signal. <P>COPYRIGHT: (C)2009,JPO&INPIT |
