A low-latency video overlay frame buffer scheduler based on prediction
A technology of video superimposition and frame buffering, which is applied in the field of character video image processing, can solve the problems that the delay characteristics of the superimposed background video affect the safety of the flight, and cannot meet the requirements of the low-delay superimposition of the head-up display, so as to prevent tearing and superimposition The effect of small delay
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[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0028] The specific implementation of the present invention is as figure 1 As shown, the frame buffer scheduler is composed of background video buffer, write frame buffer scheduling, storage read and write control, background video detection, read frame prediction scheduling, foreground video detection, foreground video buffer and video overlay and other units. For the connection relationship between modules and the signal flow direction, see figure 1 .
[0029] The architecture of the prediction-based low-latency video overlay frame buffer scheduler system in this embodiment is as follows: figure 2 shown. The solid line in the figure indicates the transmission process of the continuous video stream signal, the dotted line indicates the transmission process of the video line number information, the thick arrow indicates the transmission ...
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