嵌入式媒体广告终端软件系统的设计与实现

发布时间：2018-03-18 21:41

本文选题：嵌入式　切入点：媒体广告　出处：《哈尔滨理工大学》2009年硕士论文　论文类型：学位论文

【摘要】： 随着嵌入式技术和视频编解码技术的高速发展,机顶盒的应用越来越多。酒店大堂、银行大厅等公共场所用嵌入式机顶盒提供视频、图片、滚动消息的媒体广告服务。现在的媒体广告系统主要由web服务器、业务服务器群和终端构成,广告运营商通过web浏览器控制和查看所有的机顶盒终端,采用软件向接收业务服务器下达命令、播放任务和插播任务等。媒体广告中的软件系统设计直接关系到机顶盒性能的高低,其重要性也愈显突出。目前,媒体广告终端软件系统逐渐成为一个研究热点,国内外相关的研究也比较多。经过多年的发展,已经推出了一些媒体广告终端软件系统。然而,它也存在着灵活性差、不容易升级和后期维护比较困难等很多问题。本文在对媒体广告终端软件系统的开发方式以及实现要求作了整体分析之后,对该软件系统进行了整体的设计。 1.介绍MicroSystems公司的C2/C1100处理器和硬件平台。 2.网络的设计实现及XML(Extensible Markup Language,可扩展标记语言)文件的解析。在这部分主要是完成与业务服务器的网络连接和通信,并且将收到的XML文档进行解析,得到广告节目表。 3.以FishGUI框架系统为基础,用模块的方式设计实现广告节目单中的任务、模板、区域和元素,主要研究的任务、模板、区域和元素的调度。 4.针对点阵字体显示效果方面的不足,提出利用FreeType向量字体图形引擎库,将文本转换成向量字体以便在屏幕上实现滚动字幕。通过完成以上工作,使终端能够成功的接收到业务服务器下达的任务、对任务进行解析并且按照任务的要求进行任务和元素的调度,基本达到了媒体广告终端的软件的设计目的。本媒体广告终端产品已在江苏电信项目中应用并取得了很好的回馈。
[Abstract]:With the rapid development of embedded technology and video coding and decoding technology, set-top box is applied more and more. The current media advertising system is mainly composed of web server, service server cluster and terminal. Advertising operators control and view all set-top box terminals through web browser. The software system design in the media advertisement is directly related to the performance of the set-top box, and its importance is more prominent. At present, the media advertising terminal software system has gradually become a research hotspot, and there are many related researches at home and abroad. After years of development, some media advertising terminal software systems have been developed. However, it also has some flexibility. Not easy to upgrade and later maintenance is more difficult to wait for a lot of problems. After the overall analysis of the development mode and implementation requirements of the media advertising terminal software system, the whole design of the software system is given in this paper. 1. Introduce MicroSystems's C _ 2 / C _ 1100 processor and hardware platform. 2. The design and implementation of the network and the parsing of the XML(Extensible Markup language (extensible markup language) file. In this part, the network connection and communication with the service server are completed, and the received XML documents are parsed to obtain the advertisement program list. 3. Based on FishGUI framework system, the tasks, templates, regions and elements in the advertisement program are designed and implemented by module. The main research tasks, templates, regions and elements are scheduled. 4. Aiming at the deficiency of the display effect of dot matrix font, this paper proposes to use FreeType vector font graphics engine library to convert text into vector font in order to realize scroll subtitles on the screen. The terminal can receive the task from the service server successfully, parse the task and schedule the task and elements according to the requirements of the task, which basically achieves the purpose of the software design of the media advertising terminal. The media advertising terminal product has been used in Jiangsu Telecom project and has achieved good feedback.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2009
【分类号】：TP311.52

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