公开(公告)号：US11048662B2

公开(公告)日：2021-06-29

申请号：US15610810

申请日：2017-06-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung Ho Kim ,  Seungyeun Jeong ,  Dae-Jin Kim ,  Sang-Jin Oh ,  Hwasoo Lee ,  Hyejeong Jang

IPC: G06F16/16 ,  G06F16/18

Abstract: A trim management method for a storage device includes activating, by a processor configured by an application program, a pattern check function of a device driver, requesting, by the processor configured by the application program, a file system to write a file of a specified pattern, converting, by the processor configured by the file system, the file to management unit data of the storage device, transmitting, by the processor configured by the file system, the management unit data to the device driver, checking, by the processor configured by the device driver, whether a data pattern of the management unit data is the same as the specified pattern, and transmitting, by the processor configured by the device driver, a trim command for trimming a storage area corresponding to the management unit data, to the storage device based on results of the checking.

公开(公告)号：US11288183B2

公开(公告)日：2022-03-29

申请号：US16858959

申请日：2020-04-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongjin Kim ,  Suman Prakash Balakrishnan ,  Seokhwan Kim ,  Chansol Kim ,  Eunhee Rho ,  Jaeyoon Choi ,  Hyejeong Jang

IPC: G06F12/02 ,  G06F3/06 ,  G11C29/52 ,  G06F11/10 ,  G11C29/04

Abstract: A method of operating a memory system including a memory device, including in response to a write request of a host, storing write data and a physical address received from the host in a buffer; performing a write operation on the memory device based on the write data and the physical address; based on a write error corresponding to the write data occurring, asynchronously providing the host with error occurrence information; and providing the host with the write data having the write error and information used for a recovery from the write error.

公开(公告)号：US11726688B2

公开(公告)日：2023-08-15

申请号：US16834779

申请日：2020-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaeyoon Choi ,  Seokhwan Kim ,  Suman Prakash Balakrishnan ,  Dongjin Kim ,  Chansol Kim ,  Eunhee Rho ,  Hyejeong Jang ,  Walter Jun

IPC: G06F3/06 ,  G06F11/10 ,  G06F11/14

CPC classification number: G06F3/064 ,  G06F3/0619 ,  G06F3/0631 ,  G06F3/0653 ,  G06F3/0679 ,  G06F11/1068 ,  G06F11/1435

Abstract: A storage system communicates with a host system and includes a storage device including storage medium divided into a plurality of blocks including high reliability blocks and reserve blocks, and a controller. The controller provides the host system with block information identifying the high reliability blocks among the plurality of blocks, receives a block allocation request from the host system, wherein the block allocation request is defined with reference to the block information and identifies at least one high reliability block to be used to store metadata, and allocates at least one high reliability block to a meta region in response to the block allocation request. The controller includes a bad block manager that manages an allocation operation performed in response to the block allocation request, and a repair module that repairs an error in metadata stored in one of the high reliability blocks.

公开(公告)号：US11275516B2

公开(公告)日：2022-03-15

申请号：US16857953

申请日：2020-04-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunhee Rho ,  Suman Prakash Balakrishnan ,  Dongjin Kim ,  Seokhwan Kim ,  Chansol Kim ,  Jaeyoon Choi ,  Hyejeong Jang

IPC: G06F3/06

Abstract: A host system configured to communicate with a storage system, including a host flash translation layer (FTL) configured to manage a plurality of blocks included in the storage system, wherein the host FTL includes a block assignment module configured to generate priority information indicating priorities of free blocks from among the plurality of blocks based on erase count values of the free blocks, and wherein the host FTL is configured to assign a free block having a lowest erase count value, from among the free blocks, for a data write operation based on the priority information; a counting circuit configured to count a number of erase operations performed on each of the plurality of blocks; and an interface circuit configured to transmit to the storage system a block address along with an access request to the storage system, the block address indicating a position of the assigned free block.