Patent ID: 7394292

Claim:
A signal transmission circuit comprising: first and second power supply lines; a first transmission line; a first transmitter, connected to an input of said first transmission line and powered by said first and second power supply terminals, for receiving a first input signal to transmit a signal corresponding to said first input signal to the input of said first transmission line, a voltage amplitude of said transmitted signal being smaller than a voltage amplitude defined by said first and second power supply terminals; a first receiver, connected to an output of said first transmission line and powered by said first and second power supply terminals, for receiving said transmitted signal, adjusting a voltage of said received signal in accordance with a bias voltage to generate a voltage adjusted signal, and wave-shaping said voltage adjusted signal to generate a first output signal; and a bias circuit, connected to said first receiver and powered by said first and second power supply terminals, for differentially amplifying said first output signal and an inverted signal thereof to generate said bias voltage, said bias circuit including a capacitor charged and discharged in accordance with said bias voltage.