Secure display method and device
US8122496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2008 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2105
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A secure display device is designed to display on a screen a first set of information edited by an open operating system. A secure operating system resident in a dedicated circuit edits a second set of information. A filter allocates, independently of the open operating system, a first zone of the screen to the first set of information and a second zone of the screen to the second set of information. The zones and can have a non-zero intersection and any value. A real video memory is used for transferring the two sets of information to the screen under the sole control of the secure operating system so as to produce a secure display of the second set of information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.