Media manager cache eviction timer for reads and writes during resistivity drift
US10553278B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2018 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Aug 6, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2245
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for caching memory requests while accounting for a phase change memory cell drift phenomenon is described. The method includes writing first user data to an address in phase change memory cells; setting a timer in a set of data structures to a first value in response to writing the first user data to the phase change memory cells, wherein the data structures are stored outside the phase change memory cells; determining whether the timer corresponding to the first user data has expired; and fulfilling a read request for the address from the set of data structures in response to determining that the timer has not expired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.