Patent ID: 11860734
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. The semiconductor memory device of claim 13, wherein, in the poison mode,
the modified syndrome generator is configured to generate the modified syndrome by replacing the first syndrome bit with the first parity bit and by replacing the second syndrome bits with the result of performing an XOR operation on each of the second parity bits and the first parity bit based on the poison mode signal;
the error locator is configured to detect the error in the main data and the poison flag based on the modified syndrome and configured to output the error vector indicating a location of the error that was detected; and
an error corrector is configured to correct the error in the main data and the poison flag based on the error vector and configured to output the corrected main data or the corrected poison flag.