Method of rewriting data of memory device, memory controller controlling the memory device, and controlling method of the memory controller
US10777282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Aug 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0407
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory controller to control a memory device includes an Error Checking and Correcting (ECC) engine to perform error detection on data read from the memory device and a data operation manager. The data operation manager is to control a first rewrite operation of the memory device on selected memory cells to compensate for a drift in a distribution of the selected memory cells, based on a result of a test read operation of the memory device on test cells, determine a distribution adjustment degree based on a result of a normal read operation, as an ECC decoding operation corresponding to the normal read operation of the memory device is successfully performed by using the ECC engine, and control a second rewrite operation of the memory device based on the determined distribution adjustment degree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.