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Hardware Implementation and System Control Strategy of Videoconference System Based on Rec. H. 261

High Technology Letters 1995年第2期1卷 73-77页

作者：闫安 Institute of Image Processing & Pattern Recognition Shanghai Jiao Tong University Shanghai 200030 P. R. China

The design and realization of a videoconference system based on international recommendation are introduced in this paper, and the hardware implementation of video codec based on ITU-T H. 261 is briefly discussed. Furthermore, the buffer control method and the adaptive control strategy for quantization are proposed, which are adaptive and robust. This system can be operated under the transmission rate ranging from 128kb/s to 2Mb/s. With these strategies for the videoconference system, the high quality image is obtained. The time delay of the system is about half a second.

关键词： Recommendation H. 261 Videoconference Codec Buffer control

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