A telemetry and control system is disclosed for use in direct current power wiring applications, such as those used in automobiles or other vehicles. The system includes a master transmitter which encodes data as a train of current pulses which modulate the d.c. supply voltage. A slave receiver at another...http://www.google.com/patents/US5539388?utm_source=gb-gplus-sharePatent US5539388 - Telemetry and control system
