【摘要】：在視頻通信發(fā)展史上,最開始的視頻通信是以模擬信號(hào)輸出方式,而發(fā)展到今天則是都是以數(shù)字信號(hào)為主。而在DSP和FPGA這類高速的數(shù)據(jù)運(yùn)算芯片橫行的今,對大量的數(shù)據(jù)進(jìn)行快速,高效的運(yùn)算是一件很簡單的事。但是,這類芯片卻普遍有著運(yùn)算能力強(qiáng),控制能力差的特點(diǎn),在人們對于視頻通信多功能性要求越來越高的今天,它們已經(jīng)滿足不了現(xiàn)代技術(shù)的發(fā)展,必須采用新的技術(shù)和手段來解決這個(gè)問題。 本文設(shè)計(jì)了一種嵌入式視頻通信系統(tǒng),選取德州儀器公司的芯片以及其配套的相關(guān)軟件技術(shù)平臺(tái)來實(shí)現(xiàn)其功能。采用了TM320DM365這款芯片,’該芯片內(nèi)部集成了一個(gè)ARM內(nèi)核和相關(guān)的視頻編碼處理器,配上相應(yīng)的外設(shè),完成了系統(tǒng)的硬件構(gòu)架。而在軟件方面采用了嵌入式Linux系統(tǒng),完成u-boot, kernel等編譯和移植,并詳細(xì)的闡述了如何使用達(dá)芬奇技術(shù)實(shí)現(xiàn)相關(guān)的軟件功能,如視頻的采集,編碼壓縮,和網(wǎng)絡(luò)傳輸。最后對整個(gè)系統(tǒng)進(jìn)行了測試,實(shí)現(xiàn)了論文要求的基本功能。 本系統(tǒng)采用達(dá)芬奇公司一系列配套的軟件開發(fā)技術(shù),它包含的技術(shù)使得開發(fā)者更加便捷和快速的實(shí)現(xiàn)二次開發(fā),而且它能滿足現(xiàn)今市場對嵌入式視頻通信的一切要求,而且具有低功耗,造價(jià)低等優(yōu)點(diǎn),在市場上有著極大的發(fā)展空間好良好的市場前景。因此,基于達(dá)芬奇技術(shù)平臺(tái)開發(fā)的視頻通信系統(tǒng)有著極高的實(shí)用價(jià)值。
[Abstract]:In the history of video communication, the first video communication is analog signal output, but today it is mainly digital signal. In the high speed data processing chip such as DSP and FPGA, it is very simple to calculate a large amount of data quickly and efficiently. However, these chips generally have the characteristics of strong computing power and poor control ability. Nowadays, when people are demanding more and more multifunctional video communication, they can not meet the development of modern technology. New technologies and means must be used to solve the problem. In this paper, an embedded video communication system is designed. The chip of Texas Instruments and the related software platform are selected to realize its function. The TM320DM365 chip is adopted. The chip has integrated a ARM core and a related video encoding processor, with the corresponding peripherals, and completed the hardware architecture of the system. On the other hand, embedded Linux system is used to compile and transplant u-boot. kernel and so on. How to use Leonardo da Vinci technology to realize related software functions, such as video collection, coding and compression, and network transmission is described in detail. Finally, the whole system is tested and the basic function of the thesis is realized. This system adopts a series of software development technologies of Leonardo da Vinci Company, which make developers realize secondary development more conveniently and quickly, and it can meet all the requirements of embedded video communication in the market. With the advantages of low power consumption and low cost, it has great development space and good market prospect. Therefore, the video communication system based on da Vinci technology platform has high practical value.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN919.8

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