Invention Grant
- Patent Title: Data storage apparatus and operation method thereof
-
Application No.: US15701718Application Date: 2017-09-12
-
Publication No.: US10248501B2Publication Date: 2019-04-02
- Inventor: Jae Yoon Lee
- Applicant: SK hynix Inc.
- Applicant Address: KR Gyeonggi-do
- Assignee: SK hynix Inc.
- Current Assignee: SK hynix Inc.
- Current Assignee Address: KR Gyeonggi-do
- Agency: IP & T Group LLP
- Priority: KR10-2016-0135097 20161018; KR10-2017-0104624 20170818
- Main IPC: G06F11/10
- IPC: G06F11/10 ; G11C29/52 ; G11C11/56 ; G11C16/26 ; G11C16/34 ; G11C16/30 ; G11C16/08 ; G11C16/04

Abstract:
An operation method of a data storage apparatus includes performing a first read operation using an optimal read voltage on read-failed memory cells, performing ECC decoding operation on read data, performing a second read operation using an oversampling read voltage on the read-failed memory cells when the ECC decoding operation fails, determining whether potential error memory cells which are turned on through the optimal read voltage and are turned off through the oversampling read voltage are present in the read data, determining whether neighboring memory cells which share a bit line with the potential error memory cells and are coupled to neighboring word lines are in erased state when the potential error memory cells are present, and inverting bit values corresponding to the potential error memory cells in the read data from the read-failed memory cells through the first read operation when neighboring memory cells are in erased state.
Public/Granted literature
- US20180107540A1 DATA STORAGE APPARATUS AND OPERATION METHOD THEREOF Public/Granted day:2018-04-19
Information query