Patent ID: 6069410
Filing Date: 2000-05-30
Classification: B60R

Abstract:
An anti-tampering circuit for a vehicle comprising:a central control unit within the vehicle to be protected;a plurality of operational circuits positioned throughout the vehicle providing a predetermined function;a plurality of control devices, each control device being connected to one of said plurality of operational circuits and to said central control unit for enabling and disabling operation of said respective operational circuit, each control device comprisinga semiconductor substrate,a communications circuit formed on said semiconductor substrate for receiving data corresponding to an identification code from said central control unit,a non-volatile memory formed on said semiconductor substrate and connected to said communications circuit for storing only once a predetermined identification code,said communications circuit writing the received data to said non-volatile memory as the predetermined identification code when said control device is within the vehicle if the predetermined identification code has not already been stored therein,a comparator formed on said substrate for comparing the received data with the predetermined identification code and providing a comparison signal, anda selector formed on said substrate for enabling and disabling said respective operational circuit responsive to the comparison signal.