公开(公告)号：US10884921B2

公开(公告)日：2021-01-05

申请号：US16146339

申请日：2018-09-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： In-Tae Hwang ,  Ju-Young Lee ,  Won-Jin Lim ,  Sung-Hyun Cho

IPC: G06F12/02 ,  G06F12/10

Abstract: A storage device includes at least one nonvolatile memory device including a plurality of memory blocks, the nonvolatile memory device configured to store user data and meta data in the plurality of memory blocks, and a device controller configured to control the nonvolatile memory device, to calculate a user cost corresponding to a time of memory accesses to the user data to be performed at garbage collection with respect to each of the plurality of memory blocks, to calculate a meta cost corresponding to a time of memory accesses to the meta data to be performed at the garbage collection with respect to each of the plurality of memory blocks, to select a victim block among the plurality of memory blocks based on the user cost and the meta cost, and to perform the garbage collection on the victim block.

公开(公告)号：US09190155B2

公开(公告)日：2015-11-17

申请号：US14155960

申请日：2014-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Joon-Ho Lee ,  Jong-Nam Baek ,  Dong-Hoon Ham ,  Sang-Wook Yoo ,  In-Tae Hwang

IPC: G11C16/06 ,  G11C16/16 ,  G11C16/04

CPC classification number: G11C16/16 ,  G11C16/0483

Abstract: A memory system includes a flash memory including a block having first sub-blocks and second sub-blocks different from each other, the second sub-blocks including free pages only; and a controller configured to erase the flash memory in units of the sub-blocks, and in a garbage collection operation, the controller is configured to copy data of a valid page of the first sub-blocks to at least one of the second sub-blocks.

Abstract translation: 存储器系统包括闪存，其包括具有彼此不同的第一子块和第二子块的块，第二子块仅包括空闲页; 以及控制器，被配置为以子块为单位擦除闪速存储器，并且在垃圾收集操作中，控制器被配置为将第一子块的有效页面的数据复制到第二子块中的至少一个， 块。