A computer based video/graphics display system includes a computer system (22) having a graphics generator (24). A video signal from a video source (28) is fed through an input stage (26) to an asynchronous converter (30). The converter (30) synchronises the video signal to the graphics generator (24)....http://www.google.ca/patents/US5027212?utm_source=gb-gplus-sharePatent US5027212 - Computer based video/graphics display system
