Patent ID: 7719411

Claim:
A system of transmitting a plurality of movement parameters of a vehicle, the system comprising: a supply terminal coupled to a power source, and configured to receive power; a plurality of sensing elements configured to receive power from the supply terminal, each of the sensing elements configured to sense a movement characteristic of the vehicle, and generate movement signals indicative of the sensed movement characteristic; a multiplex circuit coupled to the sensing elements, and configured to multiplex the movement signals based on the plurality of sensing elements to create a multiplexed signal, wherein the multiplexed signal is configured to be decoded into one of at least four amplitude states including, a first state, wherein a first and second sensor of the plurality of sensors both indicate logic low; a second state, wherein the first sensor indicates logic low and the second sensor indicates logic high; a third state, wherein the first sensor indicates logic high and the second sensor indicates logic low; and a fourth state, wherein the first and second sensors both indicate logic high; and a return terminal coupled to the multiplex circuit, and configured to output the multiplexed movement signals.