The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2009
Filed:
Oct. 24, 2003
Paul C. Roberts, Kirkland, WA (US);
Christine M. Chew, Redmond, WA (US);
Bryan Willman, Kirkland, WA (US);
Kenneth D. Ray, Seattle, WA (US);
Paul C. Roberts, Kirkland, WA (US);
Christine M. Chew, Redmond, WA (US);
Bryan Willman, Kirkland, WA (US);
Kenneth D. Ray, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Techniques are disclosed to provide security for user output and input in which a first, host operating system is used along with a second, high assurance operating system (nexus), where the first system provides at least some of the infrastructure for the second system. A trusted UI engine has a trusted input manager and a trusted output manager. The trusted input manager controls access to trusted input, distributing decrypted input to the host operating system where appropriate, or to the appropriate process running in the nexus. The trusted output manager manages output to the display, and allows trusted agents in the nexus to output data for display without needing to be aware of output-device-dependent details.