公开(公告)号：US20150043282A1

公开(公告)日：2015-02-12

申请号：US14446347

申请日：2014-07-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： BEOM-KYU SHIN ,  UNG-HWAN KIM ,  JUN-JIN KONG ,  EUN-CHEOL KIM ,  DONG-MIN SHIN ,  MYUNG-KYU LEE

IPC: G11C16/34 ,  G11C16/26

CPC classification number: G11C11/5642 ,  G06F12/00 ,  G11C16/0483 ,  G11C16/26 ,  G11C16/3495

Abstract: A method of estimating a deterioration state of a memory device comprises reading data from selected memory cells connected to a selected wordline of a memory cell array by applying to the selected wordline a plurality of distinct read voltages having values corresponding to at least one valley of threshold voltage distributions of the selected memory cells, generating quality estimation information indicating states of the threshold voltage distributions using the data read from the selected memory cells, and determining a deterioration state of a storage area including the selected memory cells based on the generated quality estimation information.

Abstract translation: 一种估计存储器件劣化状态的方法包括通过向所选择的字线应用具有对应于至少一个阈值谷值的多个不同读取电压来从连接到存储器单元阵列的选定字线的选定存储单元读取数据 选择的存储单元的电压分布，使用从选择的存储单元读取的数据生成指示阈值电压分布的状态的质量估计信息，并且基于生成的质量估计信息来确定包括所选存储单元的存储区域的劣化状态 。

公开(公告)号：US20200042385A1

公开(公告)日：2020-02-06

申请号：US16444056

申请日：2019-06-18

Applicant: SAMSUNG ELECTRONICS CO,, LTD.,

Inventor： YOUNG-JUN HWANG ,  MYUNG-KYU LEE ,  HONG-RAK SON ,  GEUN-YEONG YU ,  Ki-JUN LEE

IPC: G06F11/10 ,  G11C29/52

Abstract: An error correcting circuit receives a codeword including user data and a parity code, and performs an error correction operation on the user data. The circuit includes a first buffer, a decoder, a second buffer and a processor. The first buffer stores the codeword and sequentially outputs pieces of subgroup data obtained by dividing the codeword. The decoder generates pieces of integrity data for each of the pieces of subgroup data received from the first buffer, and performs the error correction operation on the user data using the parity code. The second buffer sequentially stores the pieces of integrity data for each of the pieces of subgroup data. The processor determines whether an error is present in the codeword based on the pieces of integrity data stored in the second buffer when at least one of the pieces of integrity data is updated in the second buffer.

公开(公告)号：US20180004601A1

公开(公告)日：2018-01-04

申请号：US15613718

申请日：2017-06-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： MYUNG-KYU LEE ,  GEUN-YEONG YU ,  DONG-MIN SHIN ,  JONG-HA KIM ,  JUN-JIN KONG ,  BEOM-KYU SHIN ,  JI-YOUP KIM

IPC: G06F11/10 ,  H03M13/00 ,  H03M13/45

CPC classification number: G06F11/1076 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/2707 ,  H03M13/2957 ,  H03M13/45 ,  H03M13/616

Abstract: A method and system of recovering data includes reading reference codewords, which have code correlation with a target codeword, from a memory device when an error-correcting code (ECC) decoding process for a decoder input of the target codeword has failed. A decoder input of a corrected target codeword is generated based on an operation process using the target codeword and the reference codewords. An ECC decoding process is performed again on the decoder input of the corrected target codeword.