Memory system and operating method for re-building map data according to operation logs
US10521138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | May 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/121
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory system including a nonvolatile memory device storing operation logs and map data; a volatile memory for temporarily storing the map data; and a controller flushing the map data from the volatile memory into the nonvolatile memory device by units of map data groups, and rebuilding the map data by selectively reading the map data by the units of map data groups from the nonvolatile memory device into the volatile memory according to the operation logs, wherein the operation logs indicate: locations of first and last pages to store the flushed map data; a start of an error management operation to a program error during the flushing of the map data; and a location of a last page storing normally flushed map data before an occurrence of the program error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.