Patent ID: 6914522
Filing Date: 2005-07-05
Classification: B60R,G07C

Abstract:
1. A low power consumption RF receiver system adapted for receiving and shaping transmitted digital data signals into a digital data stream for processing by a microprocessor, said receiver system comprising: an integrated circuit which includes a data slicer having an input, an output, and a reference input, said data slicer adapted to accept the received digital data signals at its input, shape the signals into a digital data stream, and pass the digital data stream through its output to the microprocessor, said integrated circuit further includes a peak detector having an input and an output, said peak detector adapted to sense ambient circuit noise at its input when received digital data signals are not present, develop a voltage reference signal representative of the peak value of the ambient circuit noise, and pass the voltage reference signal through its output to said reference input of said data slicer; and a support circuit electrically interposed between said output of said peak detector and said reference input of said data slicer, said support circuit having a voltage divider and a charge capacitor that is adapted to accept said voltage reference signal and produce a clamping reference for said data slicer by first passing the output of said peak detector through said voltage divider and then across said charge capacitor such that said clamping reference thereby prevents said data slicer from responding to ambient circuit noise and passing false digital data streams to the microprocessor.