發(fā)布時(shí)間：2018-08-08 12:15

【摘要】： 隨著互聯(lián)網(wǎng)技術(shù)、信息技術(shù)和多媒體技術(shù)的不斷發(fā)展,網(wǎng)絡(luò)應(yīng)用的種類越來(lái)越豐富,以流式傳輸為特點(diǎn)的流媒體系統(tǒng)逐漸成為研究的熱點(diǎn)。同時(shí),無(wú)線網(wǎng)絡(luò)研究的發(fā)展以及嵌入式設(shè)備在各個(gè)領(lǐng)域的廣泛使用,給流媒體應(yīng)用的研究開辟了新的方向。因此,本文提出了運(yùn)行在有線和無(wú)線環(huán)境下的流媒體系統(tǒng)的設(shè)計(jì)方案,旨在通過(guò)該方案對(duì)流媒體技術(shù)進(jìn)行新的研究。 本文設(shè)計(jì)了可以運(yùn)行在有線和無(wú)線環(huán)境下的支持多用戶并發(fā)使用的系統(tǒng)結(jié)構(gòu)。文中就整個(gè)系統(tǒng)的模型、系統(tǒng)工作流程和系統(tǒng)關(guān)鍵功能模塊的技術(shù)支持和設(shè)計(jì)細(xì)節(jié)做了詳細(xì)闡述。在系統(tǒng)中,通過(guò)對(duì)RTSP協(xié)議工作原理的分析實(shí)現(xiàn)了對(duì)系統(tǒng)的實(shí)時(shí)控制功能,包括服務(wù)器與用戶端之間的會(huì)話控制、媒體流傳輸通道的控制以及類似VCR的控制功能。同時(shí),系統(tǒng)實(shí)現(xiàn)了三個(gè)層次,即對(duì)象間交互式的、媒體流內(nèi)和流間的同步控制。除此以外基于流媒體系統(tǒng)的商業(yè)應(yīng)用特征,還實(shí)現(xiàn)了對(duì)插播廣告時(shí)的同步控制。最后,將有線環(huán)境下的用戶端移植到嵌入式系統(tǒng)下,實(shí)現(xiàn)了無(wú)線環(huán)境下的流媒體應(yīng)用。 本文通過(guò)對(duì)該系統(tǒng)設(shè)計(jì)方案的實(shí)現(xiàn),實(shí)現(xiàn)了工作在無(wú)線以及有線網(wǎng)絡(luò)環(huán)境下的流媒體應(yīng)用系統(tǒng),并通過(guò)實(shí)驗(yàn)證實(shí)了文中采用的實(shí)時(shí)控制方案能很好地達(dá)到控制的目的;同步控制方案也能很好地完成預(yù)定的流內(nèi)和流間的同步任務(wù),這保證了媒體播放的順利進(jìn)行;最后移植到嵌入式系統(tǒng)下的用戶端也能按照預(yù)期順利地完成各項(xiàng)功能。實(shí)驗(yàn)結(jié)果證明了系統(tǒng)設(shè)計(jì)方案的有效和合理性,為將來(lái)更進(jìn)一步的研究打下了良好的基礎(chǔ)。
[Abstract]:With the continuous development of Internet technology, information technology and multimedia technology, the variety of network applications is more and more abundant. Streaming media system characterized by streaming transmission has gradually become a hot research topic. At the same time, the development of wireless network and the wide use of embedded devices in various fields have opened up a new direction for streaming media applications. Therefore, this paper proposes a design scheme of streaming media system running in wired and wireless environment, which aims to carry out new research on streaming media technology. In this paper, we design a system structure that can run in wired and wireless environments to support multi-user concurrent use. In this paper, the model of the whole system, the workflow of the system and the technical support and design details of the key function modules of the system are described in detail. In the system, the real-time control function of the system is realized by analyzing the working principle of the RTSP protocol, including the session control between the server and the client, the control of the media stream transmission channel and the control function similar to the VCR. At the same time, the system realizes three levels, that is, the synchronization control between objects, media streams and streams. In addition, based on the commercial application characteristics of streaming media system, the synchronization control is also realized. Finally, the client in wired environment is transplanted to embedded system, and streaming media application in wireless environment is realized. In this paper, the streaming media application system working in the wireless and wired network environment is realized through the realization of the design scheme of the system, and the experiment results show that the real-time control scheme can achieve the purpose of the control well. The synchronization control scheme can also accomplish the scheduled tasks of synchronization in and between streams, which ensures the smooth progress of media playback. Finally, the client can finish all functions smoothly as expected when transplanted to embedded system. The experimental results show that the system design scheme is effective and reasonable, which will lay a good foundation for further research in the future.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2008
【分類號(hào)】：TN919.8;TP368.12

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 廖宏越;趙藍(lán)蘭;周武章;;流媒體協(xié)議的研究與實(shí)現(xiàn)[J];計(jì)算機(jī)與數(shù)字工程;2007年04期

2 崔莉,王敏,吉逸;流媒體同步機(jī)制的研究[J];計(jì)算機(jī)應(yīng)用研究;2005年01期

3 李沫,張憲民,彭?yè)P(yáng),金盛,何達(dá)華;SMIL多媒體時(shí)間同步參考模型的提出和實(shí)現(xiàn)[J];計(jì)算機(jī)應(yīng)用與軟件;2005年05期

4 陶洪久,柳健,田金文;在網(wǎng)絡(luò)中的流媒體實(shí)時(shí)傳輸技術(shù)[J];系統(tǒng)仿真學(xué)報(bào);2001年S2期

5 田友勝,侯義斌,朱玉慧;基于Internet的交互系統(tǒng)中多媒體同步模型及算法[J];小型微型計(jì)算機(jī)系統(tǒng);2005年05期

6 曹鈞，，鐘玉琢，徐光佑;多媒體信息在分布式環(huán)境下的同步[J];小型微型計(jì)算機(jī)系統(tǒng);1995年01期

本文編號(hào)：2171762