论文标题:MMS系统中媒体的封装和集成
The Study on Encapsulation and Integration of the Media in MMS System
论文作者
论文导师 常义林,论文学位 硕士,论文专业 通信与信息系统
论文单位 西安电子科技大学,点击次数 128,论文页数 71页File Size1683K
2006-01-01论文网 http://www.lw23.com/lunwen_79599542/
MMS;PDU;MPEG-4;H.264;JPEG
本文对MMS系统进行了深入的研究,详细阐述了多媒体短信服务系统的体系结构。本文把该系统在终端实现中大致分为MMS编辑器,MMS PDU模块,通信模块和媒体模块,并给出了各个模块的实现方案以及各个模块相互的关系:在MMS编辑器给出了编辑和播放流程,以及界面的设计;在MMS PDU模块中,给出了PDU的结构,封装以及各种PDU所实现的功能;在媒体模块中,给出了实现的接口,以及媒体的显示,并且详细阐述了音频视频的集成和封装,特别是对MPEG-4和H.264的封装从标准到实现进行了细致的探讨和分析。同时在研究了timed text的结构的基础上,对其实现进行了一致性分析,并给出了timed text的编解码的实现方式。最后对JPEG算法进行了探讨,并给出了符合MMS要求的JPEG的实现。
This paper introduces the system of MMS and detailedly researches on the architecture of MMS.The implementation of MMS system in the terminal includes several parts:MMS editor,MMS PDU module,communication module and media module.The relationship of these modules and the implementation of these module have been given in this paper,include the flow of the editing and playing MMS.The design of the user interface in the MMS editor module,the architecture and function of each MMS PDU,the interface and method of playing media and so on.This paper discusses the encapsulation and integration of audio and video in detail,especially the encapsulation and realization of MPEG-4 and H.264.In the realization of the timed text,the analysis of the timed text conformance is also given.At the last,the algorithm of JPEG is discussed as the realization of JPEG which is fit for MMS.
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