Data recovery method for flash memory
US12197282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Apr 8, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1402
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data recovery method for a flash memory includes: reading data from the flash memory by using preset read voltage; calculating a check node error rate corresponding to the data; calculating a read voltage adjustment step size according to the check node error rate; adjusting the preset read voltage according to the read voltage adjustment step size and reading data from the flash memory by using the adjusted preset read voltage, and repeating the operation of calculating a check node error rate corresponding to the data to operation of adjusting the preset read voltage according to the read voltage adjustment step size and reading data from the flash memory by using the adjusted preset read voltage, until the check node error rate is minimum; and selecting a read voltage corresponding to the minimum check node error rate to read data from the flash memory, so as to perform data recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.