Patent ID: 8907519

Claim:
A data transmission system based on a power line, comprising: a sender; at least one receiver; a sender controller comprising a first AC (Alternating current) input port, a first data port, and a first AC output port, the sender controller being configured for connecting to an AC power source and receiving an AC signal from the AC power source via the first AC input port, and connecting to the sender and receiving data from the sender via the first data port, and processing the received AC signal according to the received data, and outputting a processed AC signal reflecting the data via the AC output port, wherein, the sender controller controls the AC output port to output the AC signal or stop outputting the AC signal according to bit values of the received data, thus to produce the processed AC signal reflecting the data; and a receiver controller comprising a second AC input port, a second data port, and a second AC output port, the receiver controller being configured for receiving the processed AC signal from the sender controller via the second AC input port, connecting to the at least one receiver and powering the at least one receiver using the processed AC signal via the second AC output port, and converting the processed AC signal to corresponding data and transmitting the data to the at least one receiver via the second data port.