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计算机网络的迅速发展 ,推动了应用的层出不穷和多媒体数据的急剧膨胀 ,促使网络、终端和用户的差异性和数据的单一性之间的矛盾加剧 .文中提出了基于复合文档的自适应传输策略模型 AMTM(Adaptive Multime-dia Transport Model)和相应算法 ,并在此基础上实现了一个自适应的多媒体传输架构 AMTF(Adaptive Multime-dia Transport Framework) .它对复合文档中包含的多媒体数据进行动态的变换处理 ,使文档能适应网络、终端和用户的差异 ,而同时又不造成数据冗余 ,为构筑具有自适应传输特性的应用提供了底层的支持 .
The rapid development of computer network has promoted the endless application and the drastic expansion of multimedia data, which aggravates the contradiction between the diversity of network, terminal and user and the unity of data.In this paper, an adaptive transmission strategy model based on compound document AMTM (Adaptive Multi-dia Transport Model) and its corresponding algorithm, and based on it, an Adaptive Multime-dia Transport Framework (AMTF) is implemented. It dynamically transforms the multimedia data contained in the composite document Processing to make the document adapt to the difference of the network, terminal and user, at the same time it does not cause data redundancy, and provides the underlying support for constructing applications with adaptive transmission characteristics.