Patent ID: 8116170

Claim:
A timekeeping device, comprising: a reception unit that captures a positioning information satellite and receives satellite signals transmitted from the captured positioning information satellite; a time information generating unit that generates time information based on the satellite signal received by the reception unit; a time display unit that displays time information; and a reception control unit that controls the reception unit; wherein the reception control unit includes a satellite capture control unit that controls the reception unit to run the positioning information satellite capture process, a signal condition detection unit that detects a signal condition of the captured positioning information satellite; a decoding control unit that controls the reception unit to apply a decoding process to the satellite signal transmitted from the captured positioning information satellite, and a reception channel setting unit that sets the reception unit to a single satellite mode or a multi-channel mode based on the signal condition detected by the signal condition detection unit; and wherein the reception unit sets the number of positioning information satellites that can be simultaneously captured and decoded to 1 when set to the single satellite mode, and sets the number of positioning information satellites that can be simultaneously captured and decoded to more than 1 when set to the multi-channel mode.