公开(公告)号：US10228990B2

公开(公告)日：2019-03-12

申请号：US15195910

申请日：2016-06-28

Applicant: SanDisk Technologies LLC

Inventor： Yiwei Song ,  Nian Niles Yang ,  James Fitzpatrick

IPC: G06F11/07 ,  G06F12/02 ,  G11C16/34 ,  G06F11/08 ,  G11C29/44 ,  G11C29/04

Abstract: Systems, methods and/or devices are used to adjust error metrics for a memory portion of non-volatile memory in a storage device. In one aspect, a first write and a first read are performed on the memory portion. In accordance with results of the first read, a first error metric value for the memory portion is determined. In accordance with a determination that the first error metric value exceeds a first threshold value, an entry for the memory portion is added to a table. After the first write, when a second write to the memory portion is performed, it is determined whether the entry for the memory portion is present in the table. In accordance with a determination that the entry for the memory portion is present in the table, the second write uses a first error adjustment characteristic that is determined in accordance with the first error metric value.

公开(公告)号：US20170139761A1

公开(公告)日：2017-05-18

申请号：US15195910

申请日：2016-06-28

Applicant: SanDisk Technologies LLC

Inventor： Yiwei Song ,  Nian Niles Yang ,  James Fitzpatrick

IPC: G06F11/07

CPC classification number: G06F11/073 ,  G06F11/0754 ,  G06F11/076 ,  G06F11/1072 ,  G06F12/02 ,  G11C16/349 ,  G11C29/4401 ,  G11C2029/0409 ,  G11C2029/0411

Abstract: Systems, methods and/or devices are used to adjust error metrics for a memory portion of non-volatile memory in a storage device. In one aspect, a first write and a first read are performed on the memory portion. In accordance with results of the first read, a first error metric value for the memory portion is determined. In accordance with a determination that the first error metric value exceeds a first threshold value, an entry for the memory portion is added to a table. After the first write, when a second write to the memory portion is performed, it is determined whether the entry for the memory portion is present in the table. In accordance with a determination that the entry for the memory portion is present in the table, the second write uses a first error adjustment characteristic that is determined in accordance with the first error metric value.