Patent ID: 6472999
Filing Date: 2002-10-29
Classification: G08C

Abstract:
An apparatus for determining signal strength of a received 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 a voltage that varies to convey the remote convenience function request, a second input for receiving a threshold voltage value, and an output for providing an output signal indicative of the occurrence of the voltage of the electrical signal exceeding the threshold value; means for adjusting the threshold voltage value; and means for monitoring the output signal of the comparator during adjustment of the threshold voltage value to determine strength of the electromagnetic signal; wherein the output signal of said comparator has a pulse for each occurrence of the voltage of the electrical signal exceeding the threshold value, said means for monitoring includes means for counting the pulses of the output signal.