PARITY GENERATING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent bit errors from being extinguished on the stage of retransformation into original one parity after division into plural parities. SOLUTION: At the time of generating the parity of one bit corresponding to each piece of data while dividing data having the parity of one bit in respect to a certain data length into plural pieces of data, the odd-number parities are generated in a data part from the first parity to the parity preceding to final one, and the final parity is generated by exclusively executing OR about the data part excepting for the final part and one non-divided parity.