Patent 7605635 was granted and assigned to National Semiconductor on October, 2009 by the United States Patent and Trademark Office.
Calibration circuitry and method for maintaining constant signal detection thresholds for multiple signal receivers that receive data signals in the form of current signals. A value of one of the incoming current signals having a predetermined signal pattern is detected and used to generate threshold control signals for each of the signal receivers to control the data signal detection thresholds.