Patent ID: 7385546
Filing Date: 2008-06-10
Classification: H03M

Abstract:
1. A digitizer module for converting a pair of analog signals into a pair of digital signals with equal sample timing, comprising: an AD converter for sampling said pair of analog signals at a predetermined time interval and converting into a first and a second digital signals; a first digital filter for generating a first converted signal into which said first digital signal is converted on the basis of a predetermined filter coefficient; a correcting filter coefficient generator for generating a correcting filter coefficient correcting a skew, besides a waveform of an impulse response of said correcting filter coefficient is same as said first digital filter, on the basis of said skew of a timing with which said pair of analog signals are sampled by said AD converter and a predetermined filter coefficient; and a second digital filter for converting said second digital signal on the basis of said correcting filter coefficient and generating a second converted signal on which said skew is corrected.