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:
Jan. 07, 2014
Filed:
Dec. 14, 2010
Methods and systems for preventing access to display graphics generated by a trusted virtual machine
James Mckenzie, Cambridge, GB;
Jean Guyader, Cambridge, GB;
James McKenzie, Cambridge, GB;
Jean Guyader, Cambridge, GB;
Citrix Systems, Inc., Fort Lauderdale, FL (US);
Abstract
The methods and systems provide for preventing a non-trusted virtual machine from reading the graphical output of a trusted virtual machine. A graphics manager receives a request from a trusted virtual machine to render graphical data using a graphics processing unit. The graphics manager assigns, to the trusted virtual machine, a secure section of a memory of the graphics processing unit. The graphics manager renders graphics from the trusted virtual machine graphical data to the secure section of the graphics processing unit memory. The graphics manager receives a request from a non-trusted virtual machine to read graphics rendered from the trusted virtual machine graphical data and stored in the secure section of the graphics processing unit memory, and prevents the non-trusted virtual machine from reading the trusted virtual machine rendered graphics stored in the secure section of the graphics processing unit memory.