RADIO TIMEPIECE AND RECEIPT CONTROL METHOD

摘要

A receipt time determination unit of a control unit in a control circuit modifies a receipt time in a case where a gain determined by an AGC circuit in a receiver circuit unit is not less than a reference value, where it is discerned that there is an error in a time code by an error discernment unit of a TCO decoder unit in the control circuit unit, and where it is discerned that data of the time code is impacted by interference waves by an interference wave discernment unit of the TCO decoder unit.

主权项

1. A radio timepiece configured to receive standard radio waves having a time code and calibrate a time based on the standard radio waves, the radio timepiece comprising:
an amplifier circuit configured to amplify a received signal of the standard radio waves; an automatic gain control circuit configured to adjust a gain of the amplifier circuit in accordance with strength of the received signal; a demodulating circuit configured to demodulate the received signal; a decoder unit configured to decode a signal demodulated by the demodulating circuit to acquire the time code; and a receipt time determination unit configured to modify a receipt time in a case where it is discerned that the received signal is impacted by noise based on an output of the automatic gain control circuit and the time code.