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Method and apparatus for correction of video tearing associated with a video and graphics shared frame buffer, as displayed on a graphics monitor
Method and apparatus for correction of video tearing associated with a video and graphics shared frame buffer, as displayed on a graphics monitor
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机译:用于校正与视频和图形共享帧缓冲器相关联的视频撕裂的方法和装置,如在图形监视器上显示的
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摘要
A video and graphics display system compensates for video tearing caused by reading graphics data from a shared buffer faster than video data is stored into the shared buffer. The video data is arranged in video fields comprising scan lines of pixel data. A processor determines the scan line of overtake of reading graphics data from the buffer at a rate faster than storing video data of a current video field into the buffer. A generator provides at least one video scan line as an interpolation of at least one scan line of the current video field stored in the shared buffer and of at least one scan line of a previous video field stored in the shared buffer. A multiplexer receives video scan lines from the shared buffer and from the generator and provides the video scan lines from the shared buffer to a display if there is no scan line of overtake and provides the interpolated video scan lines from the generator to the display if there is a scan line of overtake.
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