Patent ID: 8218685

Claim:
A method for using disparity measurements to control the adjustment of a data sheer threshold, the method comprising: receiving a serial stream of pseudorandom digital data signals having an average DC value; comparing data signal amplitudes des to a slicer threshold value; in response to the slicer threshold value comparison, determining data signal “1” and “0” values; creating a first sum of determined “1” values; creating a second sum of determined “0” values; comparing the first sum to the second sum by subtracting the second sum from the first sum after the determination of each data value, creating a difference value; adjusting the slicer threshold value in response to the comparison of the first and second sums; wherein adjusting the slicer threshold value in response to the comparison of the first and second sums includes: accumulating the difference values, creating an accumulated value; and, adjusting the slicer threshold value in response to the accumulated value.