Patent ID: 6756881
Filing Date: 2004-06-29
Classification: H04B

Abstract:
A communications and control system comprising:a bus having a signal conductor; a transceiver electrically connected to the bus for transmitting and receiving an electrical signal through the signal conductor; a controller operable with the bus for controlling power and data delivered thereto, the controller controlling power to the transceiver through the signal conductor as a pulsed waveform having a plurality of power pulses separated by a time slot, wherein power is delivered with each voltage or power pulse and absent during the time slot for transmitting data pulses therein, the controller providing control data signals to the signal conductor and thus to the transceiver through a pulse width modulation of the pulsed waveform, and wherein a first pulse width of the power pulse represents a first data value and a second pulse width of the power pulse represents a second data value, wherein the transceiver provides data to the signal conductor of the bus within the time slot as a logical bit, and thus to the controller for full duplex operation with bi-directional communication between the controller and the transceiver, data signals being transmitted through the one signal conductor of the bus through which the power is delivered.