介绍了H.261视频编码器的基本原理，提出了一种传输缓冲器和量化级自适应控制策略，并在通信电话网的局间数字中继上实现了图像的实时传输。%In this paper, the principle of H. 261 video code is introduced. The transmission buffer control method and the adaptive quantization strategy are proposed. The real- time transmission of image based on E1 channel is realized.
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