Patent ID: 7340655
Filing Date: 2008-03-04
Classification: H04L

Abstract:
1. A skew adjustment circuit, comprising: a sampling point selection section which receives oversampled data obtained by oversampling serial data, performs comparison processing on the oversampled data, assumes a transition point of the serial data based on a result of the comparison, and outputs a selection signal for selecting a sampling point of serial data from among oversampling points; and a data recovery section which receives the oversampled data and the selection signal, and outputs oversampled data at a sampling point selected by the selection signal, as sample data of the serial data, skew adjustment being performed on a condition that at least two all-bits transition patterns of serial data segments are detected within the serial data of a predetermined number of bits that is transferred in a blanking period, wherein the sampling point selection section: includes a predetermined number of exclusive OR gates that each obtain an exclusive OR of a pair of non-contiguous points of the oversampled data, where each of the pair of non-contiguous points are separated by a predetermined interval of at least one point of the oversampled data between the non-contiguous points.