DATA RECEPTION DEVICE AND DATA TRANSMISSION/RECEPTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To suppress the jitters due to inter-symbol interference by performing adaptive equalizing to reception data before binarization. ! SOLUTION: A data reception device includes: an equalizer 11 for correcting the frequency components of data RXDATA; an eye opening detection part 12 for detecting the opening of an eye by an eye diagram about correction data EQDATA; and an equalizer control part 13 for controlling the correction characteristics of the equalizer 11 on the basis of the detection result of the opening of the eye. The eye opening detection part 12 includes: a binarization part for binarizing the correction data EQDATA on the basis of a plurality of threshold voltages; and an over-sampling part for over-sampling the binary data. The data reception device also includes: threshold voltage setting means 15 and 16 for setting the plurality of threshold voltages in the binarization part in accordance with the voltage amplitude of the correction data EQDATA, and for outputting th