Error correction device and error correction method

A method of correcting errors in a plurality of error correction code (ECC) codewords, the method comprising:

• receiving the plurality of ECC codewords from an external device through a channel comprising one or more lanes;
• generating a plurality of post ECC codewords by performing error correction with respect to the plurality of ECC codewords and generating a first cyclic redundancy check (CRC) codeword based on the plurality of post ECC codewords;
• determining whether an error exists in the first CRC codeword;
• estimating a remaining error position based on error correction result information when it is determined that the error exists in the first CRC codeword;
• and
• generating a second CRC codeword by performing remaining error correction with respect to the plurality of post ECC codewords based on the remaining error position.

A device comprising:

• a receiver configured to receive a plurality of Error Correction Code (ECC) codewords transmitted from an external device through a channel including one or more lanes;
• an ECC decoder configured to generate a plurality of post ECC codewords by performing error correction with respect to the plurality of ECC codewords and generate a first Cyclic Redundancy check (CRC) codeword based on the plurality of post ECC codewords;
• and
• a CRC checker configured to determine whether an error exists in the first CRC codeword,
• wherein the ECC decoder is configured to, when it is determined that the error exists in the first CRC codeword, estimate a remaining error position based on error correction result information received from the ECC decoder and generate a second CRC codeword by performing remaining error correction with respect to the plurality of ECC codewords based on the remaining error position.