公开(公告)号：US11183254B2

公开(公告)日：2021-11-23

申请号：US17026655

申请日：2020-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun-Jin Yun ,  Sung June Youn

IPC: G11C16/04 ,  G11C16/10 ,  G11C16/14 ,  G11C16/34 ,  G11C16/16 ,  G11C11/56

Abstract: A method of operating a controller that controls a non-volatile memory device having a first memory block and a second memory block. The controller may detect invalid data of the first memory block, determine whether the detected invalid data is less than a reference value, and execute a secure erase operation of changing a voltage distribution of the detected invalid data based on a result of the determination. According to this method, it may be possible to enhance security of data stored in the non-volatile memory device, to prevent a physical erase operation from being excessively performed, and to increase the life span of the non-volatile memory device.

公开(公告)号：US10818367B2

公开(公告)日：2020-10-27

申请号：US16364230

申请日：2019-03-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun-Jin Yun ,  Sung June Youn

IPC: G11C16/04 ,  G11C16/10 ,  G11C16/14 ,  G11C16/34 ,  G11C16/16 ,  G11C11/56

Abstract: A method of operating a controller that controls a non-volatile memory device having a first memory block and a second memory block. The controller may detect invalid data of the first memory block, determine whether the detected invalid data is less than a reference value, and execute a secure erase operation of changing a voltage distribution of the detected invalid data based on a result of the determination. According to this method, it may be possible to enhance security of data stored in the non-volatile memory device, to prevent a physical erase operation from being excessively performed, and to increase the life span of the non-volatile memory device.