Patent ID: 7535478

Claim:
A method for communicating graphics overlay information to display modules, comprising: receiving a first video plane from a first video source and a second video plane from a second video source; receiving a first and second overlay plane to be blended with said first and second video planes, respectively, over a single bus, by a graphics processor; blending said first video plane with said first overlay plane to form a first blended line, and said second video plane with said second overlay plane to form a second blended line; sending simultaneously in real-time said first line to a first line buffer and said second line to a second line buffer, wherein said first line buffer and said second line buffer comprise part of a video processor; and supplying simultaneously in real-time by said video processor said first line from said first line buffer to a first display module at a first refresh rate and said second line from said second line buffer to a second display module at a second refresh rate.