Patent ID: 8787502

Claim:
A device comprising: a transmitter circuit, including: circuitry configured and arranged to respond to input data of a first value by: generating, on a first conductor, a first output signal that is maintained at a set voltage level; generating, on a second conductor, a second output signal that alternates between voltage levels according to a carrier frequency; and generating, on a third conductor, a third output signal that alternates between voltage levels according to the carrier frequency and that is out of phase with the second output signal; and circuitry configured and arranged to respond to input data of a second, different, value by: generating, on the first conductor, the second output signal that alternates between voltage levels according to the carrier frequency; generating, on the second conductor, the first output signal that is maintained at a set voltage level; and generating, on the third conductor, the third output signal that alternates between voltage levels according to a carrier frequency and out of phase with the second output signal.