Patent ID: 7792196

Claim:
A system comprising: a first module; a second module; and a single conductor wire that is electromagnetically shielded coupled between the first module and the second module to couple serial digital signals from the first module to the second module and to couple serial digital signals from the second module to the first module at the same time to support bidirectional communication between the first module and the second module; and wherein each of the first module and the second module comprise: a driver coupled to the wire to drive serial digital signals on the wire, the driver having a low output impedance and comprising a linear amplifier or a digital gate, the digital gate comprising a buffer or an inverter; a first universal asynchronous receiver-transmitter (UART) coupled to the driver to convert parallel digital signals into serial digital signals to be received by the driver, the driver to drive the serial digital signals on the wire; a receiver coupled to the wire and the driver to receive serial digital signals from the wire, the receiver comprising a differential amplifier or a comparator having an inverting input and a non-inverting input, the inverting input being coupled to an output of the driver through a voltage divider to receive a reference voltage, and the non-inverting input being coupled to the wire; and a second UART coupled to the receiver to convert serial digital signals from the receiver into parallel digital signals based on serial digital signals received by the receiver from the wire.