Secure operating modes for computing devices
US11907411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Dec 9, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/74
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Example computing devices that are enabled to enter secure operating modes are provided. An example computing device includes a main processor to run an operating system enabled to establish communication from an external device to the main processor via a hardware interrupt handler when the external device is connected to the computing device. The computing device further includes a keyboard controller to detect a lock keystroke sequence at a keyboard, and, in response to detecting the lock keystroke sequence, cause the main processor to halt the operating system and to enter a secure operating mode in which communication from the external device to the main processor via the hardware interrupt handler is blocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.