Patent ID: 6438184
Filing Date: 2002-08-20
Classification: H04L

Abstract:
A network station configured for receiving network signals from another network station via a telephone line medium, the network station comprising:an input amplifier for selectively amplifying a received network signal according to a selected one of a plurality of gain settings and outputting an amplified network signal; an envelope detector configured for outputting an envelope signal in response to the amplified network signal; first and second comparator circuits configured for outputting first and second comparison signals indicating whether the envelope signal exceeds first and second threshold values, respectively; and a digital controller configured for setting the selected one gain setting and the first and second threshold values within a prescribed access identifier interval specified by a prescribed number of the received network signals from the telephone line medium, the digital controller determining the selected one gain setting during a first portion of the prescribed access identifier interval, and a peak threshold value and data threshold value for the respective first and second threshold values during a second portion of the prescribed access identifier interval, the peak threshold value substantially corresponding to a detected peak of the envelope signal.