In an error correction method for rotating magnetic media, CRC check remainder bytes are generated by using input data from a read sector to obtain regenerated CRC bytes for the read sector, and adding the regenerated CRC bytes to incoming CRC bytes of the read sector. Error patterns for correcting errors...http://www.google.cl/patents/US5629949?utm_source=gb-gplus-sharePatent US5629949 - Error correction verification method and apparatus using CRC check remainders
