Systems and methods providing wear leveling using dynamic randomization for non-volatile memory
US8806171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2012 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Nov 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7211
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for dynamically remapping elements of a set to another set based on random keys. Application of said systems and methods to dynamically mapping regions of memory space of non-volatile memory, e.g., phase-change memory, can provide a wear-leveling technique. The wear leveling technique can be effective under normal execution of typical applications, and in worst-case scenarios including the presence of malicious exploits and/or compromised operating systems, wherein constantly migrating the physical location of data inside the PCM avoids information leakage and increases security; wherein random relocation of data results in the distribution of memory requests across the physical memory space increases durability; and wherein such wear leveling schemes can be implemented to provide fine-grained wear leveling without overly-burdensome hardware overhead e.g., a look-up table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.