A 3D graphics processing system in a preferred embodiment has an input for a digital video data stream. The system has a graphics engine, for processing graphics request code and data, in communication with a host computer over a data bus and also in communication with a frame buffer. It also...http://www.google.com/patents/US5831637?utm_source=gb-gplus-sharePatent US5831637 - Video stream data mixing for 3D graphics systems
