| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a communication apparatus capable of notifying an alarm of power interruption even using a small electrostatic capacitance or even when the voltage supplied to the communication apparatus is low at a low cost.SOLUTION: A home communication apparatus 100 is supplied with a voltage Vbus from an external AC adapter 200. The voltage Vbus is raised to a charging voltage Vc by a pressure rise section 108. Detecting that the voltage Vbus is below a threshold value, the home communication apparatus 100 determines that a power interruption has occurred. The transmitting and receiving section 101 performs a processing to notify the power interruption to a station communication apparatus 400. A capacitor 102 for power interruption is charged with the charging voltage Vc. The capacitor 102 for power interruption stores the power necessary for completing the processing from the power interruption.</p> |
