Patent ID: 8300684
Filing Date: 2012-10-30
Classification: H04L

Abstract:
1. Apparatus for generating filter parameters for a filter applied to a signal, the apparatus comprising: a real-time eye monitor configured to i) monitor data eye characteristics of the signal present in a data path, the data path applying the filter to the signal, and ii) generate eye statistics from the monitored data eye characteristics, the eye monitor monitoring the data with a sampler array comprising a top sampler, a data sampler, and a bottom sampler; an adaptive controller configured to generate a set of parameters for the filter of the data path for statistical calibration of the data eye; wherein the eye monitor continuously monitors the data eye and the adaptive controller continuously generates the set of parameters based on the eye statistics, wherein one of the eye characteristics includes an error in vertical height of the data eye based on a sampled top edge, a sampled bottom edge, and a sampled data value at a center of the data eye, and wherein the apparatus further comprises a voltage threshold controller configured to set the sampling level of the top sampler, the data sampler, and the bottom sampler in response to the adaptive controller.