Patent ID: 8429439

Claim:
A skew adjustor, comprising: a skew detector that receives a plurality of signals from a cable and provides a detected skew amount when skew is detected between two of the plurality of signals, the cable comprising at least one pair of differential signal conductors and each of the two of the plurality of signals comprising a signal from a respective conductor of one pair of the differential signal conductors; an offset controller that receives the detected skew amount and provides a delay control signal in response thereto; and a skew delay circuit comprising a common mode extraction circuit that extracts a common mode voltage between the two of the plurality of signals, one or more delay stages enabled according to the delay control signal that delay at least one of the two of the plurality of signals with reference to the common mode voltage, wherein an adjusted skew between the two of the plurality of signals at an output of the skew delay circuit is less than the detected skew amount by an amount corresponding to the enabled one or more delay stages, and a summation circuit that receives an output of the one or more delay stages, rejects the common mode voltage from the output of the one or more delay stages, and provides the output of the skew delay circuit, wherein the two of the plurality of signals comprise positive and negative signals of a pair of differential signals.