| 摘要 |
A radio-controlled timepiece reduces unnecessary power consumption and improves energy conservation. The radio-controlled timepiece has a reception unit power supply controller 43 that regularly operates a reception power supply circuit 24 that drives a reception circuit 22 for receiving a radio signal containing time information. The reception unit power supply controller 43 has an elapsed time detector 110 for determining or measuring the elapsed time from the last time a signal was received, a reception schedule storage 130 for storing schedule information for supplying power, a schedule information setting-unit 120 for changing the schedule information to schedule information B with a longer power supply time interval than a default setting A if the elapsed time becomes greater than or equal to a set time, and a power supply circuit controller 140 that controls operation of the reception power supply circuit 24 based on the schedule information. Because the frequency of signal reception is reduced if the period in which signal reception is not possible increases, power consumption can be reduced.
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