Invention Grant
- Patent Title: Data recovery once ECC fails to correct the data
- Patent Title (中): 一旦ECC无法更正数据,数据恢复
-
Application No.: US14273920Application Date: 2014-05-09
-
Publication No.: US09323607B2Publication Date: 2016-04-26
- Inventor: Yu Cai , Yunxiang Wu , Erich F. Haratsch
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Christopher P. Maiorana, PC
- Main IPC: G06F11/10
- IPC: G06F11/10 ; G11C29/00 ; G11C29/04

Abstract:
An apparatus comprising a memory and a controller. The memory is configured to process a plurality of read/write operations. The memory comprises a plurality of memory modules each having a size less than a total size of the memory. The controller is configured to salvage data stored in a failed page of the memory determined to exceed a maximum number of errors. The controller copies raw data stored in the failed page. The controller identifies locations of a first type of data cells that fail erase identification. The controller identifies locations of a second type of data cells that have program errors. The controller flips data values in the raw data at the locations of the first type of data cells and the locations of the second type of data cells. The controller is configured to perform error correcting code decoding on the raw data having flipped data values. The controller salvages data stored in the failed page.
Public/Granted literature
- US20150309872A1 DATA RECOVERY ONCE ECC FAILS TO CORRECT THE DATA Public/Granted day:2015-10-29
Information query