| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that correct information cannot be received due to the propagation state of radio waves or due to an electrical external noise, in a radio-controlled timepiece device which receives and displays date information or time information to be sent by radio waves. SOLUTION: By a means by which the reception state of the radio waves is digitized, the reception state can be grasped, and the time accuracy of the radio-controlled timepiece device can be judged. |
