本文選題：瘦終端協(xié)議 + 高清視頻��； 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：隨著云計算技術(shù)的迅猛發(fā)展,瘦終端系統(tǒng)將得到越來越廣泛的應(yīng)用,特別是當(dāng)前手機、平板市場的跳躍式發(fā)展,瘦終端系統(tǒng)將依托云計算技術(shù)平臺獲得更多的機會,因此瘦終端協(xié)議的研究和改進是這一環(huán)境下的大趨勢。隨著當(dāng)前視頻質(zhì)量的不斷提高,現(xiàn)今的瘦終端協(xié)議難以滿足高清視頻在瘦終端系統(tǒng)中的流暢播放的問題越來越突出。特別是現(xiàn)今720p、1080p視頻顯示格式的普及,視頻的清晰度、幀率不斷提高,而當(dāng)前使用的瘦終端協(xié)議大多以遠程控制為出發(fā)點,在視頻播放方面略有不足,特別是面對高清視頻時的表現(xiàn)尤為不足,這一問題對瘦終端系統(tǒng)的發(fā)展造成了很大障礙。針對當(dāng)前瘦終端系統(tǒng)中存在的無法通過瘦終端協(xié)議在客戶端流暢播放高清視頻的問題,本文在研究了當(dāng)前主流瘦終端協(xié)議的基礎(chǔ)上,提出采用H.264視頻壓縮編碼算法作為圖像的壓縮編碼算法,設(shè)計和實現(xiàn)了一種新的瘦終端協(xié)議,即支持高清視頻播放的虛擬桌面(High-Definition Video Supported Virtual Desktop,簡稱HSVD)協(xié)議,用于解決瘦終端系統(tǒng)在播放高清視頻方面的不足。HSVD協(xié)議在支持當(dāng)前瘦終端協(xié)議的主要控制功能的前提下,對視頻顯示格式為720p和1080p的主流高清視頻也可以在瘦終端系統(tǒng)中通過HSVD協(xié)議在客戶端流暢播放。本文首先對瘦終端協(xié)議的主要技術(shù)和H.264視頻壓縮標準技術(shù)進行了研究,然后設(shè)計和實現(xiàn)了瘦終端協(xié)議HSVD,以網(wǎng)絡(luò)通信模塊作為底層模塊,用于向上層的各個模塊提供服務(wù)。系統(tǒng)的主要模塊包括網(wǎng)絡(luò)通信模塊、圖像模塊、音頻模塊、身份認證模塊和鍵盤鼠標模塊。各個模塊之間保持了很好的獨立性,使協(xié)議具有較好的可擴展性。在圖像模塊中以H.264算法作為圖像的編解碼算法,可以有效提高圖像質(zhì)量,并且擁有低碼率和較強的容錯能力和網(wǎng)絡(luò)適應(yīng)性。最后通過實驗驗證了HSVD協(xié)議的主要功能和播放高清視頻方面的性能表現(xiàn),結(jié)果表明,基于HSVD的Fly W系統(tǒng)比RDP、VNC網(wǎng)絡(luò)流量占用率更低,網(wǎng)絡(luò)流量更平穩(wěn)并且能夠流暢播放高清視頻。
[Abstract]:With the rapid development of cloud computing technology, thin terminal system will be more and more widely used, especially the leapfrog development of mobile phone and tablet market, thin terminal system will rely on cloud computing technology platform to obtain more opportunities. Therefore, the research and improvement of thin terminal protocol is the trend in this environment. With the continuous improvement of video quality, the current thin terminal protocol is difficult to meet the problem of smooth playback of high-definition video in thin terminal system. In particular, with the popularization of 720pC1080p video display format, the definition and frame rate of the video are continuously improved. However, most of the current thin terminal protocols are based on remote control, so they are slightly inadequate in video playback. Especially in the face of high-definition video performance is particularly inadequate, this problem has caused a great obstacle to the development of thin terminal system. In order to solve the problem that the current thin terminal system can not play HD video smoothly through the thin terminal protocol, this paper studies the current mainstream thin terminal protocol. This paper proposes a novel video compression coding algorithm based on H.264, and designs and implements a new thin terminal protocol, namely the virtual desktop High-Definition Video Supported Virtual Desktop, (HSVDD) protocol, which supports high-definition video playback. The HSVD protocol supports the main control functions of the current thin terminal protocol under the premise that the HSVD protocol supports the main control functions of the current thin terminal protocol. The mainstream high-definition video with 720p and 1080p video display formats can also be played smoothly on the client side through the HSVD protocol in the thin terminal system. In this paper, the main technologies of thin terminal protocol and H.264 video compression standard technology are studied, and then the thin terminal protocol HSVDis designed and implemented. The network communication module is used as the underlying module to provide services to each module in the upper layer. The main modules of the system include network communication module, image module, audio module, identity authentication module and keyboard and mouse module. Each module maintains a good independence, so that the protocol has a better scalability. In the image module, H.264 algorithm is used as the image coding and decoding algorithm, which can effectively improve the image quality, and has low bit rate, strong fault-tolerant ability and network adaptability. Finally, the main functions of HSVD protocol and the performance of playing HD video are verified by experiments. The results show that the Fly W system based on HSVD has lower traffic occupancy, more stable network traffic and more smooth playback of HD video.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN919.81

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相關(guān)期刊論文 前1條

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本文編號：1889403