Protection scheme for sensor segmentation in virtualization application
US11397809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2019 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Dec 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An embedded system includes a peripheral and system-on-a-chip executing virtual machines and a hypervisor. The peripheral includes a crossbar circuit receiving digital sensor signals and selectively outputting the digital sensor signals to different outputs, queue circuits each receiving a different one of the digital sensor signals from the crossbar circuit, and queue protection circuits associated with the queue circuits and selectively permitting access to one of the queue circuits by the virtual machines. The hypervisor controls the queue protection circuits to set which of the virtual machines may access which queue circuits. A sensor protection circuit selectively permits reading of the digital sensor signals from the crossbar circuit by the queue circuits. The hypervisor controls the sensor protection circuit to set which of the queue circuits may access each of the digital sensor signals from the crossbar circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.