Patent ID: 7304567
Filing Date: 2007-12-04
Classification: B60L,B60Q,B60R,H02J,H04B,Y02T

Abstract:
1. In a vehicle including a finite power source connected to a vehicle power bus, said power bus delivering power from said finite power source to electrical devices mounted on said vehicle, a method of communicating control signaling over said vehicle power bus while said bus is carrying power to said devices, said method comprising: using an information signal to control a current load coupled to said finite power source to thereby modulate the current drawn by said current load in response to said information signal, said modulated current load changing the electrical load on said finite power source to thereby induce voltage fluctuations on said power bus that are in response to said information signal; sensing said induced voltage fluctuations on said power bus; and demodulating said sensed induced voltage fluctuations to recover said information signal.