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

作　　者：闫安 

机构地区：[1]Institute of Image Processing & Pattern Recognition, Shanghai Jiao Tong University, Shanghai 200030, P. R. China

出　　处：《High Technology Letters》1995年第2期73-77,共5页高技术通讯（英文版）

基　　金：the High Technology Research and Development Programme of China

摘　　要：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.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 

分 类 号：TN919.8[电子电信—通信与信息系统]