Wave correction clock and control method of wave correction clock

Abstract

The invention seeks to provide a radio-controlled timepiece that can suppress unnecessary power consumption and improve energy conservation. <??>The radio-controlled timepiece has a reception unit power supply control means 43 for regularly operating 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 control means 43 has a elapsed time detection means 110 for determining the elapsed time from the last time a signal was received, a reception schedule storage means 130 for storing schedule information for supplying power, a schedule information setting means 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 control means 140 for controlling 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. <IMAGE>

Description

field of invention [0001] The present invention relates to a radio wave corrected clock and a control method for the radio corrected clock. Background technique [0002] Radio wave corrected clocks and watches are widely known (for example, refer to No. 2973303 Patent Publication [0022]~[0027]), and it corrects the time by receiving long-wave standard radio waves superimposed with time information. In addition to the compulsory reception function of this type of radio-corrected timepiece, that is, the function of forcibly receiving standard radio waves by the user operating the knob or button, it is usually also equipped with an automatic reception function, that is, whenever the set reception time is reached, it will be automatically received. Receive the standard radio wave accurately and correct the time. [0003] However, for the timepieces corrected by radio waves, due to the surrounding electric field conditions, such as the influence of the magnetic field, or the ins...

AI Technical Summary

Problems solved by technology

[0003] However, for radio-corrected clocks and watches, due to the surrounding electric field conditions, such as the influence of a magnetic field, or the inside of a building, etc., it is difficult for radio waves to reach or even receive radio waves.

In addition, due to business trips abroad, radio waves may not be received when staying in an area that cannot receive standard radio waves

[0004] In this case, the standard radio wave cannot be received even though the automatic reception function is used to perform the reception operation, and the time cannot be corrected.

[0005] In this case, although the radio wave cannot be received, the reception operation is performed, so the power consumption will be ineffective.

Especially for clocks and watches, the receiving action is the most power-consuming process, such as battery-operated watches, etc., which will cause problems such as shortened battery life

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