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Moving picture real-time communications terminal, control method for moving picture real-time communications terminal, and control program for moving picture real-time communications terminal
Moving picture real-time communications terminal, control method for moving picture real-time communications terminal, and control program for moving picture real-time communications terminal
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机译:运动图像实时通信终端,运动图像实时通信终端的控制方法以及运动图像实时通信终端的控制程序
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摘要
The moving picture real-time communications terminal comprises: an input unit which inputs an RGB video image signal; a conversion unit which converts the RGB video image signal into a YUV video image signal including Y, U and V video image signals; a compression and encoding unit which digitally converts the YUV video image signal outputted from the conversion unit into moving picture data, and compresses and encodes the moving picture data; a communications unit which sends and receives the moving picture data compressed and encoded by the compression and encoding unit, in real time, to and from a communications terminal of another party connected through a network; a bandwidth estimation unit which estimates change in a bandwidth of the network; a switching circuit which connects and disconnects output paths of the U and V video image signals from the conversion unit to the compression and encoding unit; and a switching control unit which disconnects the output paths of the U and V video image signals by operating the switching circuit, in response to the change in the bandwidth estimated by the bandwidth estimation unit, wherein the compression and encoding unit increases a bit rate of compression and encoding of the Y signal, in accordance with disconnection of the output paths of the U and V video image signals.
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