| 摘要 |
There is provided a communication apparatus including a signal generator that generates a transmit signal obtained by encoding a processing command for executing a given process, a carrier transmitter that transmits a carrier signal obtained by modulating the transmit signal at a carrier frequency higher than the frequency of power transmitted on a power line, and a communication filter, connected between the power line and the carrier transmitter, that at least blocks signals at the frequency of the power, while not blocking signals at the carrier frequency.
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