Hardware-assisted virtualization for implementing secure video output path

US9785576B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Thiam Wah Loh · Singapore, SG
• Per Hammarlund · Hillsboro, US
• Andreas Wasserbauer · Pettenbach, AT
• Swee Chong Peter Kuan · Singapore, SG
• Eckhard Delfs · Nuremberg, DE
• Deepak Abraham Mathaikutty · Chandler, US
• Stephen J. Robinson · Austin, US
• Gautham Chinya · Hillsboro, US
• Perry Wang · San Jose, US
• Chee Weng Tan · Singapore, SG
• Hong Wang · Santa Clara, US
• Reza Fortas · Villeneuve-Loubet, FR

Key dates

• Filing date: Mar 27, 2014
• Grant date: Oct 10, 2017
• Expiry date: Aug 17, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D10/00
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Systems and methods for employing hardware-assisted virtualization for implementing a secure video output path. An example processing system comprises: a memory; a shared interconnect; and a processing core communicatively coupled to the memory via the shared interconnect, the processing core to: initialize a first virtual machine and a second virtual machine; responsive to receiving a memory access transaction initiated by the first virtual machine to access a memory buffer, tag the memory access transaction with an identifier of the first virtual machine; and responsive to receiving a digital content decoder access transaction initiated by the second virtual machine, tag the digital decoder access transaction with an identifier of the second virtual machine.