Memory control device, control method of flash memory, and method for generating security feature of flash memory
US10705743B2 · kind B2 · utility
0Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2019 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Mar 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for generating a security feature of a flash memory includes determining a memory block from a plurality of memory blocks in the flash memory; erasing data of the determined memory block of the flash memory; providing a predetermined voltage to the determined memory block to obtain a plurality of corresponding threshold voltages of a plurality of cells in the determined memory block, wherein each of the corresponding threshold voltages corresponds to a characteristic of each cell in the determined memory block; and establishing a security feature based on the plurality of corresponding threshold voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.