Time-based secure access control system
US10862704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Jun 11, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40019
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a System on a Chip (SOC) having multiple masters and multiple slaves connected to a bus via a crossbar switch, a time-based secure access control system of the SOC includes a central access control (CAC) circuit coupled to the master devices through respective channels to receive time-based access requests from the masters. Each slave is connected to a slave access control (SAC) circuit and each SAC circuit includes an access time control (ATC) circuit in communication with the CAC circuit and a dedicated timer. The CAC circuit controls the ATC circuits to limit the access permission from the masters to the slaves by checking whether a requested access time has expired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.