公开(公告)号：US11474899B2

公开(公告)日：2022-10-18

申请号：US16690676

申请日：2019-11-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Min-Chul Kim ,  Jongwon Lee ,  Kyungwook Ye ,  Minseok Ko ,  Yangwoo Roh ,  Sung-Hyun Cho

IPC: G06F11/00 ,  G06F11/10 ,  G11C29/52

Abstract: An open-channel storage device being configured to be controlled by a host including a bad block manager, the open-channel storage device including a buffer memory and a nonvolatile memory device. An operation method of the open-channel storage device includes performing a normal operation under control of the host, detecting a sudden power-off immediately after a program failure associated with a first data block among a plurality of memory blocks included in the nonvolatile memory device while the normal operation is performed, dumping a plurality of user data stored in the buffer memory to a dump block among the plurality of memory blocks in response to the detected sudden power-off, detecting a power-on, and performing a data recovery operation on the plurality of user data stored in the dump block in response to the detected power-on.