公开(公告)号：US20230054286A1

公开(公告)日：2023-02-23

申请号：US17848820

申请日：2022-06-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyunkyo OH ,  Sanghyun CHOI ,  Heewon LEE

IPC: G06F3/06

Abstract: Provided are a storage system including a host and a storage device, and an operation method of the storage system. The storage device includes a memory controller and a memory device, where an operation method of the memory controller includes receiving from the host a first mode change request for a folder, which is a unit for managing at least one file, and a logical address of the at least one file, and in response to the first mode change request, rewriting to the memory device first data corresponding to the logical address in a second operating mode, and invalidating first data which is existing data already written to correspond to the logical address and the first data in a first operating mode, wherein the first mode change request sets a data operation speed to a high-speed mode for the at least one file included in the folder.

公开(公告)号：US20200152279A1

公开(公告)日：2020-05-14

申请号：US16448545

申请日：2019-06-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyunkyo OH ,  Sangkwon MOON

IPC: G11C16/34 ,  G11C16/04 ,  G11C16/16

Abstract: A storage device includes a non-volatile memory including a plurality of blocks, a buffer memory, and a controller that stores an on-cell count in the buffer memory, the on-cell count indicating a number of memory cells, which are turned on by a read level applied to a reference word line of each of the plurality of blocks, from among memory cells connected to the reference word line.