Electronic timepiece and time adjustment method

摘要

An electronic timepiece efficiently receives satellite signals, reduces power consumption, and displays the correct time. A GPS wristwatch 1 has a satellite signal reception unit 10A that receives satellite signals and acquires time information contained in the satellite signals; a time information adjustment unit 25 that keeps times and adjusts the kept time based on the time information acquired by the automatic receiving unit 24; a reception result memory unit 313 that stores the reception result of the reception process performed by the automatic receiving unit 24; and a reception time setting unit 21 that sets the reception start time at which the reception process starts based on the reception result stored in the reception result memory unit 313. The automatic receiving unit 24 executes the reception process when the kept time reaches the reception start time set by the reception time setting unit 21.

主权项

1. An electronic timepiece comprising:
a reception unit that executes a first reception process for receiving a satellite signal sent from a positioning satellite and acquiring time information contained in the satellite signal; a timekeeping unit that keeps time and adjusts the kept time based on the time information acquired in the first reception process when the first reception process succeeded; and a reception time setting unit that sets a reception start time for starting a second reception process based on a time at which the first reception process is executed when the first reception process succeeded; wherein the reception unit executes the second reception process for receiving a satellite signal sent from a positioning satellite and acquiring time information contained in the satellite signal when the time kept by the timekeeping unit matches the reception start time set by the reception time setting unit, the timekeeping unit adjusts the kept time based on the time information acquired in the second reception process when the second reception process succeeded, the reception time setting unit updates the reception start time by shifting the reception start time when the second reception process failed, the reception unit executes a third reception process for receiving a satellite signal sent from a positioning satellite and acquiring time information contained in the satellite signal when the time kept by the timekeeping unit matches the reception start time, and the reception time setting unit does not change the reception start time when the third reception process succeeded.