Patent ID: 8102910
Filing Date: 2012-01-24
Classification: H04L

Abstract:
1. An apparatus comprising: a first circuit configured to (i) generate an equalizer parameter in response to an input signal, said equalizer parameter causing a cancellation of post-cursor inter-symbol interference from a plurality of symbols in said input signal and (ii) generate an output signal in response to both said input signal and said equalizer parameter; and a second circuit configured to (i) generate a target parameter signal in response to said input signal, said target parameter signal representing a mean value of a plurality of sample points of said symbols and (ii) generate a control signal in response to said target parameter signal, said control signal causing a reduction of said equalizer parameter, said reduction causing a decrease in said cancellation of said post-cursor inter-symbol interference from said symbols, wherein (A) said apparatus does not cancel pre-cursor inter-symbol interference, (B) said second circuit is further configured to measure a rate of change in said target parameter signal as said equalizer parameter changes, said second circuit is further configured to determine a median value of said target parameter signal while said rate of change in said target parameter is within a threshold, and (C) said output signal is generated in response to said median value.