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一、前言 现代通信网技术与多媒体计算机技术的结合产生了集各种媒体信息于一体的多媒体通信技术。多媒体通信的四大特征是:多种通信媒体、交互性、同步性和以人为终端用户。多媒体通信技术,一诞生就表现出了强大的生命力,短短十几年的时间,窄带多媒体通信技术已得到了广泛的应用。在各种通信技术加速发展的今天,多媒体通信技术正处于新的革命性飞跃的前夕,该领域表现得异常活跃,呈现出新的发展趋势:向IP网络融合、走向宽带化、从固定走向移动。 1.向IP融合 INTERNET网络惊人的膨胀速度
I. Introduction The combination of modern communication network technology and multimedia computer technology has produced a multimedia communication technology that integrates various media information. The four characteristics of multimedia communications are: a variety of communication media, interactive, synchronization and people-to-end users. Multimedia communication technology, once born, showed great vitality. In just a dozen years, narrowband multimedia communication technology has been widely used. Today, with the rapid development of various communication technologies, multimedia communication technology is on the eve of a new and very revolutionary leap forward. The field has been extremely active and has shown a new trend of development: convergence with IP networks, broadband, and fixed-to-mobile . 1. To IP fusion INTERNET network astonishing expansion rate