Continuous monotonic counter for memory devices
US11567691B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Jun 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0679
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and devices include counters configured to implement count operations. Systems include non-volatile memory devices which include a first counter configured to store a first plurality of data values representing a plurality of count operations, and a second counter configured to store a second plurality of data values representing a number of erase operations applied to the first counter. Systems further include control circuitry configured to implement read, write, and erase operations for the first counter and the second counter, determine a partial count value based, at least in part, on a current value of the second counter and at least one physical parameter of the first counter, and generate a count value by adding the partial count value with a current value of the first counter. Such counters and control circuitry are immune data loss due to power loss events.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.