公开(公告)号：US20230064060A1

公开(公告)日：2023-03-02

申请号：US17744635

申请日：2022-05-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeong Woo LEE ,  Sang Jin YOO ,  Hee-Woong KANG ,  Kwang Woo LEE ,  Hee Won LEE

IPC: H03M13/11 ,  G11C29/52 ,  G11C7/10

Abstract: A method for operating a storage controller includes receiving a first read command, performing a first read of data stored in a nonvolatile memory using a first read level and receiving a first read data, performing first error correction decoding of the first read data to determine whether the first error correction decoding succeeds, determining a second read level using a predetermined method, and determining a first soft decision offset value of the second read level, reading data stored in the nonvolatile memory using the determined second read level and the first soft decision offset value and receiving a first soft decision data, performing second error correction decoding of the first soft decision data to determine whether the second error correction decoding succeeds, and storing the second read level, a first method used to determine the second read level and the first soft decision offset value.