Patent ID: 8798568

Claim:
A signal transmission method for suppressing a reflected wave of a transmission signal on a transmitting end of a transmission line, comprising: receiving the transmission signal to be transmitted to the transmission line by a terminal; extracting the reflected wave by a hybrid circuit that is coupled to the transmission line; obtaining, by a control circuit that is coupled to the hybrid circuit and the terminal and receives the reflected wave extracted at the hybrid circuit and the transmission signal received at the terminal, level and time information related to the reflected wave by computing a correlation between a data pattern of the transmission signal received at the terminal and the reflected wave extracted at the hybrid circuit; correcting, by a correcting circuit that is coupled to the terminal and the control circuit and receives the transmission signal received at the terminal and the level and time information obtained at the control circuit, a waveform of the transmission signal received at the terminal based on the level and time information obtained at the control circuit in order to minimize the correlation; and minimizing the correlation at the control circuit by variably controlling a parameter of the hybrid circuit.