UNMATCHING DATA EXTRACTING DEVICE

PURPOSE:To extract an unmatching part at a higher speed with respect to the device which extracts an unmatching intermediate part from a pair of data strings. CONSTITUTION:This device is provided with a means 12 which successively reads out data from a pair of data strings 10-1 and 10-2 from the tail to the head by the same volume, a means 14 which compares data read out by the means 12, a means 16 where read positions of both data are stored at the time of obtaining the comparison result indicating the inequality between data read out by the means 12, a means 18 which successively reads out data from the pair of data strings 10-1 and 10-2 from the head to the tail by the same volume after storage of read positions, a means 20 which compares data read out by the means 18, and a means 22 which outputs all of data read by the means 18 till arrival of data read positions at stored positions after acquisition of the comparison result indicating the inequality of data read out by the means 18.