Method And Apparatus For Controlling An Electronic Circuit Node Coupled To A Single Conductor Line

A electronic circuit node for driving an output circuit, said electronic circuit node comprising:

• a single input line, said single input line receiving a nominally constant current signal;
• a single output line;
• a power sub-circuit, said power sub-circuit for creating a local power supply by periodically directing said nominally constant current signal into a local capacitor, said power sub-circuit shunting said nominally constant current signal onto said single output line when not directing said nominally constant current signal into said local capacitor;
• a data extraction sub-circuit, said data extraction sub-circuit for demodulating control data from said nominally constant current signal;
• and
• at least one output circuit, said output circuit controlled using said control data demodulated from said nominally constant current signal.