The central phase decision circuit and that central phase decision mannered

摘要

PROBLEM TO BE SOLVED: To provide a central phase deciding circuit for deciding the central phase of a data signal for providing normal communication by correcting the distortion of a waveform when that distortion occurs in the data signal.;SOLUTION: In the central phase deciding circuit, with which (n) is defined as an integer of ≥2, for deciding the central phase of the data signal inputted serially for (n) phases, this circuit is provided with a serial/parallel converting circuit for performing the serial/parallel conversion of the data signal and outputting parallel data, to which serial/parallel conversion is applied, in the n-fold cycle of the data signal while using a plurality of output ports, a phase comparator circuit for comparing the phases of parallel data outputted from the respective output ports and detecting phase non-coincidence, a counter for counting how many times phase non-coincidence is detected in each of output ports by the phase comparator circuit, and a circuit for deciding the central phase on the basis of a counted number of times of occurrence of phase non- coincidence.;COPYRIGHT: (C)2002,JPO