公开(公告)号：US11301331B2

公开(公告)日：2022-04-12

申请号：US16529320

申请日：2019-08-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seokhwan Kim ,  Yonggil Song ,  Chui Lee ,  Jooyoung Hwang

IPC: G06F11/14 ,  G06F3/06 ,  G11C14/00

Abstract: A storage device includes a nonvolatile memory device, a random access memory that includes a first region and a second region, and a controller that is configured to use the first region of the random access memory as a journal memory for a journal indicating modification of data of the second region, expose a user region of the nonvolatile memory device to an external host device as a first access region of a block unit, and expose the second region of the random access memory to the external host device as both a second access region of the block unit and a third access region of a byte unit.