A system for detecting and correcting errors in a data block includes a check bits generation unit which receives and encode data to be protected. The check bits generation unit partition the data into a plurality of logical groups. The check bits generation unit generates a parity bit for each of the logical group and additionally generates a pair of global error correction codes. The error correction unit is configured to generate a parity error bit for each of the logical group of data based on the received data and the original parity bits, as well as first and second syndrome codes.