Patent ID: 6466137
Filing Date: 2002-10-15
Classification: B60R,H04B,Y10T

Abstract:
A receiver/controller apparatus for receiving an electromagnetic signal comprised of a plurality of pulses that convey a remote convenience function request, and for causing performance of the requested function, said apparatus comprising:a comparator having a first input for receiving an electrical signal with an electrical characteristic that varies to convey the remote convenience function request, a second input for receiving a threshold electrical characteristic value, and an output for providing a signal indicative of the occurrence of the electrical characteristic of the electrical signal exceeding the threshold value that conveys the remote convenience function request; and means for adjusting the threshold electrical characteristic value including means for monitoring the threshold electrical characteristic value and means, responsive to the monitored threshold electrical characteristic value, for adding current to the second input to increase the threshold electrical characteristic value and for drawing current from the second input for decreasing the threshold electrical characteristic value.