Error correction encoding means, error correction decoding device, and a method thereof

Error correction encoding unit 12 is provided for the transmission area and the redundant area constituting the transmission frame, encoding is performed using the product code, the information sequence area partitioned by the generated product code encoded frame and / or the parity sequence area the excess or deficiency occurs in the case where, in accordance with excess or deficiency of the distribution generated by the information sequence area is unevenly distributed to the parity sequence area, and / or unevenly distributed parity sequence area to the information sequence area .