IPTV系统的广告插播技术的研究

发布时间：2018-05-22 19:10

本文选题：IPTV + 广告插播　；参考：《华中师范大学》2007年硕士论文

【摘要】： 当前，电信业务正从传统的话音平台和网络平台业务向一个更灵活、以客户为中心、能够快速提供数字多媒体信息的业务发展，IPTV就是其中的一项重要形式。除了IPTV所带来的广阔的业务机会和蕴含的收益空间，IPTV业务还为IPTV运营商的个性化广告提供了前所未有的市场机遇。内容提供商更是能自身主导和安排IPTV网内各节目频道的时间段广告，，从而获得更大的收益来源。在此背景下研究和实现IPTV系统中的广告插播，具有很强的实用价值。本论文对如何在IPTV系统中实现广告插播进行了深入研究，按照从理论分析到解决方案的提出，再到设计验证的顺序进行论述。首先，对IPTV主要的业务功能和实现，以及IPTV系统的架构和几个关键技术进行了综述。对与本论文研究方向相关的直播电视业务、增值业务和组播技术、流媒体技术进行了重点描述。接着，对现有的数字电视广告拼接技术，即硬切的拼接方法和DPI(数字节目插播)的拼接方法，逐一进行了介绍，并将其应用到IPTV系统中。根据在IPTV中实现广告插播的系统需求，分析提出了运用DPI技术实现IPTV中的广告插播的解决办法，但其存在成本过高、编解码格式和插播类型有限等缺点。进而利用改进的硬切方式，并结合虚拟频道业务，提出了一套完整的符合实际要求的解决方案。同时，为了提高不同传输流间的拼接效率，对如何处理前后拼接流的格式信息和如何选择合适的拼接点进行了分析和研究。最后，为验证此解决方案的可行性和实效性，利用WinSock和WinPcap网络编程技术在Windows平台上设计实现了一个小型的广告插播模拟系统。实验结果表明，本模拟系统能准确读取广告列表，在直播电视节目播出过程中，能立即响应切换拼接操作，并即时转发组播流，拼接效果流畅，没有马塞克或停顿现象，证明了上述解决方案的可行性和实效性。
[Abstract]:At present, the telecommunication service is changing from the traditional voice platform and the network platform service to a more flexible, customer-centered, which can provide digital multimedia information quickly. IPTV is one of the important forms. In addition to the broad business opportunities and profit space brought by IPTV, IPTV also provides unprecedented market opportunities for IPTV operators' personalized advertising. Content providers are able to dominate and arrange time-time advertising for each channel in the IPTV network so as to obtain a greater source of revenue. Under this background, it is of great practical value to study and implement the advertisement placement in IPTV system. In this paper, how to realize the advertisement broadcast in IPTV system is studied deeply, and the sequence from theoretical analysis to solution, and then to design verification is discussed. Firstly, the main business functions and implementation of IPTV, the architecture of IPTV system and several key technologies are reviewed. This paper mainly describes the live TV service, value-added service, multicast technology and streaming media technology related to the research direction of this paper. Then, the existing digital TV advertisement splicing technology, that is, hard-cut splicing method and dpi (digital program plugging) splicing method, are introduced one by one, and applied to IPTV system. According to the system requirement of implementing the advertisement interbroadcast in IPTV, this paper analyzes and puts forward the solution of using DPI technology to realize the advertisement interbroadcast in IPTV, but its cost is too high, the format of coding and decoding and the type of broadcast are limited, and so on. Then, by using the improved hard cutting mode and combining with the virtual channel service, a complete solution is proposed to meet the practical requirements. At the same time, in order to improve the efficiency of splicing between different transport streams, the paper analyzes and studies how to deal with the format information of the pre-and post-splicing flow and how to select the appropriate splicing points. Finally, in order to verify the feasibility and effectiveness of the solution, a small simulation system of advertisement placement is designed and implemented on Windows platform by using WinSock and WinPcap network programming technology. The experimental results show that the simulation system can read the advertisement list accurately, can respond to the switch splicing operation immediately during the broadcast of the live TV program, and transmit the multicast stream instantly, the stitching effect is smooth, and there is no Masek or pause phenomenon. The feasibility and effectiveness of the above solutions are proved.
【学位授予单位】：华中师范大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TN949.2

【引证文献】