US 12,073,904 B2
Storage controller including parity management module, storage device including the same, and operating method of storage device
Sanggyu Ko, Suwon-si (KR); Yeongmin Yoo, Guri-si (KR); and Jongpil Kim, Gwangju (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 15, 2022, as Appl. No. 17/888,191.
Claims priority of application No. 10-2021-0183923 (KR), filed on Dec. 21, 2021.
Prior Publication US 2023/0197183 A1, Jun. 22, 2023
Int. Cl. G11C 29/52 (2006.01); G11C 16/10 (2006.01); G11C 16/34 (2006.01)
CPC G11C 29/52 (2013.01) [G11C 16/102 (2013.01); G11C 16/3495 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a storage controller which communicates with a non-volatile memory device, the method comprising:
determining whether a program/erase (P/E) count of a target page including a plurality of sectors is greater than or equal to a P/E threshold value;
based on determining that the P/E count of the target page is greater than or equal to the P/E threshold value, fetching the target page;
determining a first sector having high reliability and a second sector having low reliability from the plurality of sectors of the fetched target page; and
expanding a second parity area of the second sector by moving a margin region in a first parity area of the first sector to the second parity area of the second sector.