Identifying asynchronous power loss
US9921898B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2016 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Dec 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/144
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods of operating such apparatus include iteratively programming a group of memory cells to respective desired data states, wherein a particular memory cell is configured to store overhead data and a different memory cell is configured to store user data; determining whether a power loss to the apparatus is indicated while iteratively programming the group of memory cells; and if a power loss to the apparatus is indicated, changing the desired data state of the particular memory cell before continuing with the programming. Apparatus and methods of operating such apparatus further include reading a data state of a particular memory cell of a last written page of memory cells, and marking the page as affected by power loss during a programming operation if the particular memory cell has any data state other than a particular data state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.