SYSTEM AND METHOD FOR VIRTUAL 3D GRAPHICS ACCELERATION AND STREAMING MULTIPLE DIFFERENT VIDEO STREAMS

摘要

A digital video transmission system that improves performance using 3D graphics acceleration hardware. A first system creates a virtual 3D graphics card for each terminal session executing on a server system that supports multiple users. The virtual 3D graphics card is assigned a share of processing ability on a physical 3D graphics accelerator. The virtual 3D graphics card uses the share of processing ability on the physical 3D graphics accelerator to render 3D graphics in a local screen buffer associated with the terminal session. The local screen buffer is encoded and transmitted to a remote display that recreates the screen display in a video buffer of remote display. A second system operates by using a physical 3D graphics accelerator in a server system to perform transcoding for multiple video streams. To best perform task switching, the task switching is performed on I-frame borders.