Patent ID: 8199869
Filing Date: 2012-06-12
Classification: H04L

Abstract:
1. A communication apparatus comprising: a storage section storing a first synchronization pattern; a synchronization pattern detection unit receiving a signal including a second synchronization pattern to sample said second synchronization pattern with a plurality of clocks, phases of said plurality of clocks being different from each other, and comparing said first synchronization pattern with results of sampling said second synchronization pattern to identify a clock or clocks among said plurality of clocks, said first synchronization pattern being sampled correctly with said identified clock or clocks; a phase comparison unit identifying a first clock and a second clock among said plurality of clocks, a data of said second synchronization pattern changing between an edge of said first clock and an edge of said second clock; and a phase judgment section coupled to said synchronization pattern detection unit and said phase comparison unit to identify a third clock to be used for sampling said signal among said identified clock or clocks, wherein said third clock has a different phase from said first and second clocks, and wherein a phase difference between said third clock and a time point at which said data of said second synchronization pattern changes is larger than a phase difference between another clock included in said plurality of clocks and said time point.