Patent ID: 7164721

Claim:
A circuit to convert a first voltage signal from a bidirectional signal line to a first current signal, the first voltage signal to represent first data transmitted from a first transmitter and second data transmitted from a second transmitter, to convert a second voltage signal to a second current signal, the second voltage signal substantially to represent the first data, and to subtract the second current signal from the first current signal to generate a first output signal, the first output signal to represent the second data, wherein the circuit is further adapted to convert a third voltage signal from a second bidirectional signal line to a third current signal, the third voltage signal to represent the first data and the second data in conjunction with the first voltage signal, to convert a fourth voltage signal to a fourth current signal, the fourth voltage signal substantially to represent the first data in conjunction with the second signal, and to generate a second output signal to represent, in conjunction with the first output signal, the second data based on the fourth current signal and the third current signal.