Nonvolatile memory, its data updating method, and card reader equipped with such nonvolatile memory
US6941413B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2002 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Oct 10, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/105
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for updating data in a nonvolatile memory is provided. The method comprises the steps of writing in a RAM data stored in a data writing region of the non-volatile memory, updating the data in the RAM, updating a data error detection region in the RAM based on the data updated, writing in data saving region of the non-volatile memory the data updated in the RAM, updating an end flag region of the data saving region, deleting the data from the data writing region, writing in the data writing region the data in the RAM, updating an end flag region of the data writing region, and deleting the data from the data saving region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.