公开(公告)号：US20250165390A1

公开(公告)日：2025-05-22

申请号：US18651459

申请日：2024-04-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yejin Jo ,  Kwangsuk Kim ,  Jinhwan Choi ,  Wonho Kang ,  Jungyoung Kim ,  Jungtae Lee

IPC: G06F12/02

Abstract: There is provided a method of operating a storage system that includes a host and a storage device. According to the method, device-filled-ratio of a storage space of a plurality of nonvolatile memory devices in the storage device is queried by the host to the storage device, calculated device-filled-ratio is transmitted, by a storage controller that controls the plurality of nonvolatile memory devices, to the host in response to the querying, an unmap command and target logical block addresses are transmitted, by the host, to the storage device based on the calculated device-filled-ratio, and physical block addresses corresponding to the target logical block addresses are deallocated, by the storage device, in response to the unmap command.

公开(公告)号：US11797450B2

公开(公告)日：2023-10-24

申请号：US17232844

申请日：2021-04-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Byoungsul Kim ,  Youngsan Kang ,  Daehyun Kwon ,  Myong-Seob Song ,  Byung Yo Lee ,  Yejin Jo

IPC: G06F12/0815 ,  G06F12/0804

CPC classification number: G06F12/0815 ,  G06F12/0804 ,  G06F2212/1032

Abstract: An electronic device includes a cache memory including a memory space for storing a first cache set including a plurality of sector data and a plurality of dirty bits, each of the plurality of dirty bits representing whether corresponding sector data of the plurality of sector data are modified, a memory controller, connected to a plurality of data lines and a data mask line, for receiving the plurality of sector data and the plurality of dirty bits from the cache memory, setting a logic level of a data mask signal based on a logic level of each of the plurality of dirty bits, and outputting the plurality of sector data through the plurality of data lines and the data mask signal through the data mask line, and a memory device, connected to the plurality of data lines and the data mask line, for receiving the plurality of sector data through the plurality of data lines, and receiving the data mask signal through the data mask line.