Patent ID: 9654177
Date: 2017-05-16
CPC Classifications: H04B

Claim:
1. A power line data transmitter comprising: a power circuit including a transistor, the transistor having a modulation circuit that operates when receiving electric power from the power circuit from a power supply node through the input terminal and modulates data to output a data modulation signal from the power supply node, wherein the power circuit functions as a data transmitter to perform a power line transmission, wherein, when the data modulation signal is outputted from the modulation circuit, (i) a potential of the output terminal of the transistor changes, (ii) the power circuit changes a voltage between the control terminal and the output terminal of the transistor, (iii) the power circuit changes the potential of the input terminal of the transistor, and (iv) the power circuit superimposes the data modulation signal on the direct current power line to perform the power line transmission, and wherein, when the modulation circuit changes the potential of the output terminal, the potential of the input terminal changes and the power circuit, which is also the data transmitter, outputs the modulation signal to the direct current power line through the input terminal.