Patent ID: 7512051

Claim:
An information processing apparatus for reading and reproducing recording data from a medium recording data of a predetermined format therein, comprising: a binarizing means for binarizing read data from said medium; an edge measuring means for measuring an edge position of the binarized data from said binarizing means; a jitter measuring means for measuring the coded jitter information from the measured edge position; an edge interval measuring means for measuring an edge interval from the measured edge position; a propagation delay difference control amount calculation means in which the jitter information from the jitter measuring means and the edge interval from said edge interval measuring means are added to each other so as to generate a propagation delay difference control amount; a controlling means for controlling a difference between a rising propagation delay and a falling propagation delay of said binarized data so that the reproduction state is improved, based on the propagation delay difference control amount; and a channel data discriminating means for discriminating a channel data from the measured edge position.