Method of correcting errors in binary coded words

摘要

A method of correcting errors in binary coded words with use of a word block consisting of a plurality of data words and a plurality of error check words and consisting of a plurality of subblocks which can be selectively grouped on the basis of one of three different criteria to form one of three different sets of subblocks, wherein one set of subblocks include error check words to provide one error detection code and the other two sets of subblocks include error check words codes to provide two error correction codes. The detection and correction of errors in the data and error check words in the word block being effected by repetition of a cycle including detection of errors on the basis of the error detection code, correction of errors on the basis of one of the two error correction codes and correction of errors on the basis of the other of the two error correction codes.