Task following between multiple operating systems
US7661104B2 · kind B2 · utility
36Cited by
12References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2003 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Dec 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/526
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor may utilise two operating systems (Non-Secure, Secure) between which calls may be made. In order that a second operating system can track task switches made by a first operating system, each time a call is made to the second operating system, this call includes an identifier to enable discrimination between the task which was executing on the first operating system when that call was made. The identifier can be a call identifier and/or a target thread identifier and may include further parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.