| 摘要 |
PURPOSE:To attain a composite display of graphics and a video image in real time without decreasing the resolution of the video image and to attain a video window display in an optional shape. CONSTITUTION:Graphic data are sent from a graphic controller 13 to a video window display controller 12 equipped with a video window processor 10 which moves a video window and enlarges and reduces it with magnifications in real time and a video data pixel value recognition part 9 which has a function for recognizing pixel values of the graphics data, i.e., color information. The video data pixel value recognition part 9 outputs the video data when a pixel value of the graphic data is '0' and the graphic data when not, and then a displayed screen is composed of the graphics and video windows. Further, the shape of the video window on the screen is optional according to the shape indicated with pixel values '0' of the graphic data. |
