User-mode based remote desktop protocol (RDP) encoding architecture

US8180905B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Wilhelm R. Schmieder · Snoqualmie, US
• Nelamangal Krishnaswamy Srinivas · Sammamish, US
• Costin Hagiu · Sammamish, US
• Nadim Y. Abdo · Bellevue, US
• Vladimir Stoyanov · Redmond, US
• Ahmed M. Tolba · Redmond, US
• Gautam Swaminathan · Redmond, US
• Srinivasa R. Neerudu · Redmond, US

Key dates

• Filing date: Dec 9, 2008
• Grant date: May 15, 2012
• Expiry date: Oct 25, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F9/545
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Techniques are disclosed for a user-mode based remote desktop protocol (RDP) encoding architecture. A user mode desktop application and user mode virtual channel application run in user-mode session space. Virtual channel data from the virtual channel application is marshaled and sent to a RDP encoder process in user-mode system space. There it is converted to RDP protocol data units (PDU) and sent to a remote client across a communications network. Graphics data from the desktop application is sent to a display driver in kernel-mode session space and then to a graphics reflector that marshals the graphics data and sends it to the RDP encoder for a similar transformation.