Low-impact firmware update
US11977638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Nov 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F8/656
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are techniques for performing a low-impact firmware update to a first microcontroller. In an aspect, a security entity communicatively coupled to the first microcontroller receives an update to firmware of the first microcontroller, authenticates the update to the firmware of the first microcontroller to prevent a security-related rollback, offloads system management tasks and interrupt handling from the first microcontroller to at least a second microcontroller communicatively coupled to the first microcontroller, coordinates installation of the update to the firmware of the first microcontroller without taking processing cycles from host software, and restores, to the first microcontroller, system management states occurring after the system management tasks and interrupt handling are offloaded from the first microcontroller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.