| 摘要 |
<p>In the present invention, without detracting from the merits of power line communication, i.e., being able to keep facilities investment to a minimum, in order to achieve power saving by cutting off power line communication during standby, a transmission-side power line communication device (X) is provided with a startup signal sending section (14) for transmitting to a power line (35) a startup signal that uses the frequency of a band not used by a power line communication section (13), and a reception-side power line communication device (Y) is provided with a startup signal receiving section (15) for receiving from the power line (35) a startup signal transmitted by the startup signal sending section (14). The power line communication section (13) provided to the reception-side power line communication device (Y) enters into a power saving mode when specific conditions are satisfied, and returns from the power saving mode when the startup signal receiving section (15) has received the startup signal.</p> |
