网络广告机的研究与开发

发布时间：2018-03-28 04:20

本文选题：流媒体　切入点：MPEG　出处：《山东大学》2009年硕士论文

【摘要】： 随着网络技术以及资讯业的迅猛发展,多媒体网络广告系统以其具有的低成本、高稳定性、良好的实时性、方便的管理等优点,展现出良好的应用和发展前景。本文在总结分析前人的研究成果的基础上,将先进的嵌入式技术、视频技术、网络技术有效地结合在一起,设计并实现了一种以EM8621L微处理器和嵌入式uCLiunx操作系统为核心的先进网络视频广告播放系统。论文首先简要介绍了完成该系统设计所具备的基础知识:流媒体技术、音视频编解码压缩技术MPEG-4以及ARM微处理器技术;然后着重论述了硬件系统(广告机机顶盒)和软件系统(客户端软件)的实现过程,为保证系统的稳定性和可扩展性,并加快开发速度,设计中采用了模块化设计的方法,硬件部分首先介绍了机顶盒主要芯片的相关技术参数,然后分析说明了机顶盒的整体结构和工作原理,并给出了主要模块部分的硬件设计,包括以太网接口模块设计,USB接口模块设计,音视频输出接口模块设计,MINI-PCI插槽模块设计等;软件部分首先介绍了嵌入式的相关知识,之后给出了软件部分的整体框架,并对主要模块部分进行了详解,包括uCLinux操作系统核心,网络驱动程序的开发,网络集中控制协议以及MPEG-4视频传输系统的实现等。本文的最后部分对整个系统进行了总结回顾,对预期任务的实现情况进行了简要展示,提出了系统的一些不足之处及下一步需要做的改进工作。
[Abstract]:With the rapid development of network technology and information industry, multimedia network advertising system has the advantages of low cost, high stability, good real-time, convenient management and so on, showing a good application and development prospects. On the basis of summarizing and analyzing the previous research results, this paper combines the advanced embedded technology, video technology and network technology effectively. An advanced network video advertisement playing system based on EM8621L microprocessor and embedded uCLiunx operating system is designed and implemented. Firstly, this paper briefly introduces the basic knowledge of the system design: streaming media technology, audio and video codec compression technology MPEG-4 and ARM microprocessor technology; Then, the realization process of hardware system (advertisement machine set-top box) and software system (client software) is discussed emphatically. In order to ensure the stability and expansibility of the system, and to speed up the development speed, the modular design method is adopted in the design. In the hardware part, the related technical parameters of the main chip of the set-top box are introduced, then the whole structure and working principle of the set-top box are analyzed, and the hardware design of the main module part is given. Including Ethernet interface module design and USB interface module design, audio and video output interface module design MINI-PCI slot module design. The main modules are explained in detail, including the core of uCLinux operating system, the development of network driver, the network centralized control protocol and the realization of MPEG-4 video transmission system. In the last part of this paper, the whole system is summarized and reviewed, the implementation of the expected tasks is briefly demonstrated, and some shortcomings of the system and the next steps to improve the system are put forward.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2009
【分类号】：TP368.11

【引证文献】