一个多媒体数据同步模型的建立和实现

The Building and Implementation of a Synchronization Model for Multimedia Data

文章对多媒体数据流间存在的时序问题和时序关系进行介绍，对现有研究情况进行分析．结合一个多媒体数据模型，基于ＰＥＴＲＩ网，提出了一个同步模型，以表达媒体数据之间存在的同步关系．根据这两个模型对多媒体数据建立了相应的数据结构，并采用该数据结构介绍了对多媒体数据存取播放的实现算法．

In this paper, temporal problems and temporal relationships among multimedia dataflow are introduced, then related research is analyzed. Integrating with a multimedia data model, a synchronization model based on PETRI net is presented to represent temporal relationships among multimedia data. According to these two models, corresponding data structure is built and an algorithm for multimedia data retrieval is proposed.