Patent ID: 6377642
Filing Date: 2002-04-23
Classification: H04L

Abstract:
A decoding system for decoding a received input waveform including a plurality of encoded symbols, the decoding system comprising:sampling means for sampling an input waveform for a plurality of sample cycles, wherein for each sample cycle a zero-crossing input value is obtained at a first sampling time and a sampled input value is obtained at a second sampling time; decoding means for decoding each sampled input value into a decoded symbol; symbol evaluation means for comparing the decoded symbol from a current sample cycle to the decoded symbol from a previous sample cycle; means for determining an accumulated offset value, in accordance with the character of the transition between the decoded symbol from a current sample cycle to the decoded symbol from a previous sample cycle; and timing modification means for modifying one of said first and second sampling time of at least one sample cycle in response to said accumulated offset value exceeding at least one predetermined threshold value.