ISDN可视电话模型设计与实现策略  

A Design Model of ISDN Videophone and Its Implementation Politics

作　　者：喻占武 胡瑞敏[1] 陆涛[1] 李德仁[1] 

机构地区：[1]武汉测绘科技大学多媒体网络通信工程研究所,武汉市珞喻路129号430079

出　　处：《武汉测绘科技大学学报》1999年第3期262-267,共6页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金;国家测绘局测绘科技发展基金;湖北省自然科学基金

摘　　要：在分析Ｈ．３２０ 系列协议的基础上，提出了一种ＩＳＤＮ 可视电话的设计模型，介绍了该模型的系统结构、系统控制、数据流管理、ＩＳＤＮ 通信仿真、图像控制与唇形同步等方面的设计与实现策略。Based on analyzing H.320 series protocols, a design model of H.320 Videophone is proposed. This paper introduces the design and implementation politics of the system structure and system control. According to the features of H.320 audio and video, the model provides different mechanisms of data acquisition, buffering management, data stream management. It establishes the platform of communication simulation and debug for H.221 module in two ways: communication management on Internet, local virtual loopback route. With adopting the encapsulation technique of object oriented design, the model provides the general protocol simulation model to speed up the procedure of designing, debugging, testing, updating, and replacing the protocol module. Finally, by using the on line monitor system of this model, describes and analyzes the video encoding control, bit rate control and lip synchronization of ISDN videophone.

关 键 词：多媒体 ISDN 可视电话 电话模型 实现策略 

分 类 号：TN916.32[电子电信—通信与信息系统]