本文選題：IPTV + 廣告插播��； 參考：《華中師范大學(xué)》2007年碩士論文

【摘要】： 當(dāng)前，電信業(yè)務(wù)正從傳統(tǒng)的話音平臺(tái)和網(wǎng)絡(luò)平臺(tái)業(yè)務(wù)向一個(gè)更靈活、以客戶為中心、能夠快速提供數(shù)字多媒體信息的業(yè)務(wù)發(fā)展，IPTV就是其中的一項(xiàng)重要形式。除了IPTV所帶來的廣闊的業(yè)務(wù)機(jī)會(huì)和蘊(yùn)含的收益空間，IPTV業(yè)務(wù)還為IPTV運(yùn)營(yíng)商的個(gè)性化廣告提供了前所未有的市場(chǎng)機(jī)遇。內(nèi)容提供商更是能自身主導(dǎo)和安排IPTV網(wǎng)內(nèi)各節(jié)目頻道的時(shí)間段廣告，，從而獲得更大的收益來源。在此背景下研究和實(shí)現(xiàn)IPTV系統(tǒng)中的廣告插播，具有很強(qiáng)的實(shí)用價(jià)值。本論文對(duì)如何在IPTV系統(tǒng)中實(shí)現(xiàn)廣告插播進(jìn)行了深入研究，按照從理論分析到解決方案的提出，再到設(shè)計(jì)驗(yàn)證的順序進(jìn)行論述。 首先，對(duì)IPTV主要的業(yè)務(wù)功能和實(shí)現(xiàn)，以及IPTV系統(tǒng)的架構(gòu)和幾個(gè)關(guān)鍵技術(shù)進(jìn)行了綜述。對(duì)與本論文研究方向相關(guān)的直播電視業(yè)務(wù)、增值業(yè)務(wù)和組播技術(shù)、流媒體技術(shù)進(jìn)行了重點(diǎn)描述。 接著，對(duì)現(xiàn)有的數(shù)字電視廣告拼接技術(shù)，即硬切的拼接方法和DPI(數(shù)字節(jié)目插播)的拼接方法，逐一進(jìn)行了介紹，并將其應(yīng)用到IPTV系統(tǒng)中。根據(jù)在IPTV中實(shí)現(xiàn)廣告插播的系統(tǒng)需求，分析提出了運(yùn)用DPI技術(shù)實(shí)現(xiàn)IPTV中的廣告插播的解決辦法，但其存在成本過高、編解碼格式和插播類型有限等缺點(diǎn)。進(jìn)而利用改進(jìn)的硬切方式，并結(jié)合虛擬頻道業(yè)務(wù)，提出了一套完整的符合實(shí)際要求的解決方案。同時(shí)，為了提高不同傳輸流間的拼接效率，對(duì)如何處理前后拼接流的格式信息和如何選擇合適的拼接點(diǎn)進(jìn)行了分析和研究。 最后，為驗(yàn)證此解決方案的可行性和實(shí)效性，利用WinSock和WinPcap網(wǎng)絡(luò)編程技術(shù)在Windows平臺(tái)上設(shè)計(jì)實(shí)現(xiàn)了一個(gè)小型的廣告插播模擬系統(tǒng)。實(shí)驗(yàn)結(jié)果表明，本模擬系統(tǒng)能準(zhǔn)確讀取廣告列表，在直播電視節(jié)目播出過程中，能立即響應(yīng)切換拼接操作，并即時(shí)轉(zhuǎn)發(fā)組播流，拼接效果流暢，沒有馬塞克或停頓現(xiàn)象，證明了上述解決方案的可行性和實(shí)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.
【學(xué)位授予單位】：華中師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2007
【分類號(hào)】：TN949.2

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 呂會(huì)民;;IPTV網(wǎng)絡(luò)組建與應(yīng)用[J];新聞傳播;2013年07期

相關(guān)碩士學(xué)位論文 前1條

1 黃雪瓊;IPTV故障診斷專家系統(tǒng)設(shè)計(jì)[D];華南理工大學(xué);2012年

本文編號(hào)：1923273