Patent ID: 11881277
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An operating method of a memory device, the operating method comprising:
storing, in a memory region, position information regarding a codeword including an erasure, and erasure information including position information regarding a position of the erasure in the codeword;
loading the position information regarding the codeword to a row decoder and a column decoder during power up;
determining whether a read address corresponding to a read instruction is identical to the position information regarding the codeword including the erasure, in response to the read instruction from a host;
transmitting the position information regarding the position of the erasure in the codeword to an error correction code (ECC) decoder, when the read address is identical to the position information regarding the codeword including the erasure; and
correcting, by the ECC decoder, an error in a codeword received from a memory cell array using the position information regarding the position of the erasure in the codeword,
wherein the correcting of the error by the ECC decoder includes:
calculating a syndrome using the received codeword and an H-matrix;
calculating a modified syndrome using the syndrome and the position information regarding the position of the erasure in the codeword;
determining a weight of the syndrome; and
correcting the error using the position information regarding the position of the erasure in the codeword and the modified syndrome when the weight of the syndrome is an even number.