公开(公告)号：US11074171B2

公开(公告)日：2021-07-27

申请号：US15994247

申请日：2018-05-31

申请人： Samsung Electronics Co., Ltd.

发明人： Soo Hyun Kim ,  Dong-Young Seo ,  Sang Kwon Moon

IPC分类号： G06F12/02 ,  G06F3/06 ,  G06F12/0804

摘要： A data storage device is provided. The data storage device a buffer configured to store a mapping table comprising physical block addresses (PBAs) corresponding to logical block addresses (LBAs), a non-volatile memory configured to store data; and a controller configured to control the buffer and the non-volatile. The controller is configured to read data stored at a first PBA of the non-volatile memory corresponding to a first LBA by referring to the mapping table when receiving a command to read data corresponding to the first LBA from outside of the data storage device, and, when a second LBA included in the data read from the non-volatile memory is different from the first LBA, retry reading, from the non-volatile memory, the data corresponding to the first LBA.

公开(公告)号：US10229050B2

公开(公告)日：2019-03-12

申请号：US15295575

申请日：2016-10-17

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Hyun Jin Choi ,  Dong-Young Seo ,  Sang Kwon Moon

IPC分类号： G06F12/02 ,  G06F3/06

摘要： A method of operating a storage controller, for controlling a garbage collection operation so that blocks included in a non-volatile memory satisfy reuse constraints, includes determining whether the number of free blocks among the blocks is smaller than a first reference value for triggering a garbage collection operation and performing the garbage collection operation on the blocks until the number of free blocks is equal to a second reference value larger than the first reference value according to a result of the determination.