Invention Grant
- Patent Title: Nonvolatile memory recovery after power failure during write operations or erase operations
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Application No.: US15298636Application Date: 2016-10-20
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Publication No.: US10048879B2Publication Date: 2018-08-14
- Inventor: Zhengang Chen , Earl T. Cohen , Alex G. Tang
- 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: G06F3/06
- IPC: G06F3/06 ; G11C7/24 ; G11C8/20 ; G11C11/56 ; G11C16/10 ; G11C16/22 ; G11C16/26

Abstract:
A method for recovery after a power failure. The method generally includes a step of searching at least some of a plurality of pages of a memory to find a first erased page in response to an unsafe power down. A step may move stored data located between a particular word line in the memory that contains the first erased page and a previous word line that is at least two word lines before the particular word line. Another step may write new data starting in a subsequent word line that is the at least two word lines after the particular word line that contains the first erased page.
Public/Granted literature
- US20170038985A1 NONVOLATILE MEMORY DATA RECOVERY AFTER POWER FAILURE Public/Granted day:2017-02-09
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