Patent ID: 11961549
Assignee: SK HYNIX INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. An operating method of a data storage device including a controller and a storage including a plurality of storage regions each composed of a plurality of pages, the operating method comprising:
generating, by the storage, open regions, in each of which a programmed page and an unprogrammed page coexist;
selecting, by the controller, a plurality of target open regions on the basis of health information of the open regions; and
performing, by the controller, control so that refresh operations for the respective target open regions are performed in a time-distributed manner,
wherein the selecting includes:
selecting, as candidates, open regions having the health information equal to or greater than a first threshold value among the open regions; and
selecting at least a part of the candidates as the target open regions.