Error correcting decoder and error correction decoding method

摘要

After one dimension of error detection and correction has been performed on a block of data, error correction in the other dimension may be selected to be either erasure-and-error correction or simply error correction. The selection is of erasure-and-error correction, which uses results of the error correction in the first dimension, when an indication of a burst error has been detected during the row error correction, or when the number of maximum error corrections within the row error correction is small enough, or when uncorrectable errors within the row error correction is small enough. Otherwise, error correction is selected.