Patent ID: 6097761
Filing Date: 2000-08-01
Classification: H04B,H04L

Abstract:
A system comprising at least two stations which are interconnected by means of at least two conductors for the transmission of data and power, and comprising a power source coupled to said conductors, characterized in that the power source is designed for delivering a bipolar AC voltage having pulses of a first and a second polarity to the conductors, in that means for absorbing and storing power exclusively from the pulses having the first polarity are provided in each station without its own power supply and are connected to the conductors, in that modifying means are connected to the conductors in each of the stations provided for the transmission of data, which means modify exclusively pulses of the AC voltage having the second polarity in dependence on the data to be transmitted, and in that a detector for evaluating the amplitude of those pulses only which have the other polarity is connected to the conductors in each of the stations provided for the reception of data.