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

Claim 0:
1. A data storage device comprising:
a storage including a plurality of storage regions each composed of a plurality of pages; and
a controller configured to:
select a plurality of target open regions from open regions among the storage regions on the basis of health information of the open regions, in each of which a programmed page and an unprogrammed page coexist, and
perform control so that refresh operations for the respective target open regions are performed in a time-distributed manner,
wherein the controller selects the plurality of target open regions by:
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.