Electronic timepiece

摘要

An electronic timepiece includes: a radio-wave receiving unit; a time acquiring unit that acquires time information and daylight-saving-time implementation information; a storage unit that stores predetermined information associated with a time in a preset area; and a calculation unit that calculates a current time in the preset area, wherein the predetermined information includes daylight-saving-time setting information; and when the time of switching to/from daylight saving time comes during a radio-wave reception process, the calculation unit determines whether a first or second condition is satisfied, wherein the first condition is that radio-wave reception has failed; and the second condition is that the daylight-saving-time implementation information is information provided before the time of switching; and when the first or second condition is satisfied, the calculation unit switches the time to calculate current time.

主权项

1. An electronic timepiece comprising:
a receiving unit that receives a standard time radio wave; a time acquiring unit that acquires time information and daylight-saving-time implementation information indicating whether daylight saving time is currently in effect, from the standard time radio wave received by the receiving unit; a time setting storage unit that stores predetermined information associated with a time in a preset area, the predetermined information including daylight-saving-time information relating to a start and end of daylight-saving-time in the preset area and indicating a time of switching to/from daylight saving time in the preset area; and a calculation unit that calculates a current time in the preset area based on the time information and the daylight-saving-time implementation information acquired by the time acquiring unit and based on the predetermined information stored in the time setting storage unit; wherein: when the time of switching arrives while a process for receiving the standard time radio wave is being performed, the calculation unit determines whether one of a first condition and a second condition is satisfied, the first condition being a condition in which reception of the standard time radio wave fails after completion of the process for receiving the standard time radio wave, and the second condition being a condition in which the daylight-saving-time implementation information acquired by the time acquiring unit is information provided before the time of switching; and when the calculation unit determines that one of the first condition and the second condition is satisfied, the calculation unit controls to switch a flag associated with whether the daylight saving time is in effect, to calculate the current time.