DEVICE AND METHOD FOR CORRECTING TRANSMISSION SIGNAL

摘要

PROBLEM TO BE SOLVED: To improve the reliability of data transmission by evading the increase of a transmission signal error ratio caused by a status change of a transmission line. SOLUTION: A received transmission-unit signal is stored in a memory 233 of a correction part 164 and corrected and demodulated and the corrected/ demodulated signal is supplied to a CRC error detection part. The transmission- unit signal from which no error is detected is encoded/modulated and fed back to the correction part 164. The correction part 164 finds out new correction data by comparing the uncorrected transmission unit signal stored in the memory 233 with the fed-back transmission unit signal. The new found correction data are reflected to a known correction data stored in a data storage part 237. COPYRIGHT: (C)2004,JPO