Radio-controlled timepiece

Abstract

A radio-controlled timepiece is shown including the following. A timekeeping unit keeps date and time. A date / time obtaining unit obtains date / time information from outside to correct the date and time of the timekeeping unit. A preliminary notice information obtaining unit obtains from outside preliminary notice information regarding whether leap second adjustment in which a leap second is inserted or deleted is executed. A date / time obtaining necessity setting unit sets whether the date / time information needs to be obtained based on history of obtaining the date / time information. The date / time obtaining necessity setting unit sets that the date / time information needs to be obtained when the preliminary notice information is not obtained by the adjustment possible date / time or the leap second adjustment is executed at the adjustment possible date / time, and does not change setting when the preliminary notice information is obtained and the leap second adjustment is not executed.

Description

technical field [0001] The invention relates to a radio wave watch. Background technique [0002] Currently, there are electronic watches (radio-controlled watches) that can acquire date and time data from an external date and time information source to correct the date and time counted by a timekeeping circuit. Examples of such external date and time information sources include radio waves transmitted from navigation satellites (positioning satellites) used in global navigation systems (GNSS, positioning systems), and standard radio transmissions that transmit time information through long-wave band radio waves. date and time information output by a server (NTP server) on a wired or wireless network, or date and time information that a mobile phone obtains from a mobile phone base station and then receives from the mobile phone through short-range wireless communication, etc. Wait. These external date and time information sources vary in accuracy, ease of reception, time ...

AI Technical Summary

Problems solved by technology

[0007] On the other hand, Japanese Unexamined Patent Application Publication No. 2011-208946 discloses a technique for displaying that it is possible to display the date and time after the leap second timing can be implemented and until the accurate date and time are obtained from the outside. Inaccurate

[0008] However, the insertion or deletion of the leap second does not necessarily have to be performed, so after the timing of the leap second can be implemented, whether or not it is implemented, it will increase power consumption every time the date and time data is received and checked.

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