Patent ID: 11941271
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. An operating method of a storage device including a controller and a non-volatile memory device including a plurality of blocks, the operating method comprising:
receiving a secure erase request from a host with respect to a first block among the plurality of blocks;
determining a secure erase state of the first block based on a threshold voltage distribution of memory cells connected to at least one word line of the first block; and
selectively performing a secure erase operation on the first block under a normal operating condition in response to the secure erase request, wherein the performing of the secure erase operation is based on a determination result indicating that no secure erase operation has been performed on the first block,
wherein the secure erase operation on the first block is skipped in response to the secure erase request when the first block is in the secure erase state.