US Patent 7973691 Data recovery circuit, data recovery method and data receiving apparatus

A data recovery circuit includes an analog-digital converter creating a digital code sequence, a phase detector calculating a position of a crossing point from the digital code sequence, a phase estimator acquiring a presumed position of a data center point of a data sequence based on the position of the crossing point, and a data determining circuit extracting the sequence of data determination values from the digital code sequence based on the position of the crossing point and the presumed position of the data center point.