本文選題：流媒體　切入點：MPEG　出處：《山東大學》2009年碩士論文

【摘要】： 隨著網(wǎng)絡(luò)技術(shù)以及資訊業(yè)的迅猛發(fā)展,多媒體網(wǎng)絡(luò)廣告系統(tǒng)以其具有的低成本、高穩(wěn)定性、良好的實時性、方便的管理等優(yōu)點,展現(xiàn)出良好的應(yīng)用和發(fā)展前景。 本文在總結(jié)分析前人的研究成果的基礎(chǔ)上,將先進的嵌入式技術(shù)、視頻技術(shù)、網(wǎng)絡(luò)技術(shù)有效地結(jié)合在一起,設(shè)計并實現(xiàn)了一種以EM8621L微處理器和嵌入式uCLiunx操作系統(tǒng)為核心的先進網(wǎng)絡(luò)視頻廣告播放系統(tǒng)。 論文首先簡要介紹了完成該系統(tǒng)設(shè)計所具備的基礎(chǔ)知識:流媒體技術(shù)、音視頻編解碼壓縮技術(shù)MPEG-4以及ARM微處理器技術(shù);然后著重論述了硬件系統(tǒng)(廣告機機頂盒)和軟件系統(tǒng)(客戶端軟件)的實現(xiàn)過程,為保證系統(tǒng)的穩(wěn)定性和可擴展性,并加快開發(fā)速度,設(shè)計中采用了模塊化設(shè)計的方法,硬件部分首先介紹了機頂盒主要芯片的相關(guān)技術(shù)參數(shù),然后分析說明了機頂盒的整體結(jié)構(gòu)和工作原理,并給出了主要模塊部分的硬件設(shè)計,包括以太網(wǎng)接口模塊設(shè)計,USB接口模塊設(shè)計,音視頻輸出接口模塊設(shè)計,MINI-PCI插槽模塊設(shè)計等;軟件部分首先介紹了嵌入式的相關(guān)知識,之后給出了軟件部分的整體框架,并對主要模塊部分進行了詳解,包括uCLinux操作系統(tǒng)核心,網(wǎng)絡(luò)驅(qū)動程序的開發(fā),網(wǎng)絡(luò)集中控制協(xié)議以及MPEG-4視頻傳輸系統(tǒng)的實現(xiàn)等。 本文的最后部分對整個系統(tǒng)進行了總結(jié)回顧,對預(yù)期任務(wù)的實現(xiàn)情況進行了簡要展示,提出了系統(tǒng)的一些不足之處及下一步需要做的改進工作。
[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.
【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2009
【分類號】：TP368.11

【引證文獻】

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