| 摘要 |
PROBLEM TO BE SOLVED: To allow a radio-controlled timepiece built into electric equipment to stably detect a standard radio wave even in an environment where reception of radio waves is apt to be blocked and facilitate automatic time calibration and holding of time information in the radio-controlled timepiece. SOLUTION: As a means for transmitting the standard radio wave to the radio-controlled timepiece 1 built into the electric equipment 2, a lamp wire to which the power cable 3 of the electric equipment 2 is connected via an indoor receptacle is used as a standard radio wave receiving antenna wire via a coupling coil toroidally wound on a magnetic core. |
