Storage device including nonvolatile memory device and method of operating the same
US11775203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Sep 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of operating a nonvolatile memory device is provided. The method includes: dividing a memory block of a plurality of memory blocks provided in the nonvolatile memory device into a plurality of retention groups; generating time-difference information including a plurality of erase program interval (EPI) values corresponding to the plurality of retention groups; generating offset information including a plurality of offset values corresponding to differences between a plurality of default read voltages and a plurality of corrected read voltages; generating compensated read voltages corresponding to a read address based on the offset information and the time-difference information; and performing a read operation to read data from the nonvolatile memory device based on the read address and the compensated read voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.