Patent ID: 8325792
Filing Date: 2012-12-04
Classification: H04L

Abstract:
1. An apparatus for decision feedback equalization (DFE) comprising: an odd data receiving unit that receives an odd data sampling clock, an odd edge sampling clock and a DFE input signal and that includes a half-rate DFE equalization function; an even data receiving unit that receives an even data sampling clock, an even edge sampling clock and the DFE input signal and that includes a half-rate DFE equalization function, the odd data receiving unit and the even data receiving unit each including a data detection unit and an edge detection unit that respectively perform data and edge detection on the half-rate DFE equalized signal; and a pattern filter that receives a set of sampling data by the detection units and that detects a data pattern, three consecutive bits of which are 110 or 001, the pattern filter, based on a result of the detection, selecting edge data on the half-rate DFE equalized signal when the data pattern of 110 or 001 is detected, wherein the odd data receiving unit implements the half-rate DFE equalization function using a decision feedback signal in the odd data receiving unit and a decision feedback signal in the even data receiving unit; and wherein the even data receiving unit implements the half-rate DFE equalization function using a decision feedback signal in the even data receiving unit and a decision feedback signal in the odd data receiving unit.