瘦终端协议HSVD的设计与实现

发布时间：2018-05-14 20:46

本文选题：瘦终端协议 + 高清视频　；参考：《电子科技大学》2014年硕士论文

【摘要】：随着云计算技术的迅猛发展,瘦终端系统将得到越来越广泛的应用,特别是当前手机、平板市场的跳跃式发展,瘦终端系统将依托云计算技术平台获得更多的机会,因此瘦终端协议的研究和改进是这一环境下的大趋势。随着当前视频质量的不断提高,现今的瘦终端协议难以满足高清视频在瘦终端系统中的流畅播放的问题越来越突出。特别是现今720p、1080p视频显示格式的普及,视频的清晰度、帧率不断提高,而当前使用的瘦终端协议大多以远程控制为出发点,在视频播放方面略有不足,特别是面对高清视频时的表现尤为不足,这一问题对瘦终端系统的发展造成了很大障碍。针对当前瘦终端系统中存在的无法通过瘦终端协议在客户端流畅播放高清视频的问题,本文在研究了当前主流瘦终端协议的基础上,提出采用H.264视频压缩编码算法作为图像的压缩编码算法,设计和实现了一种新的瘦终端协议,即支持高清视频播放的虚拟桌面(High-Definition Video Supported Virtual Desktop,简称HSVD)协议,用于解决瘦终端系统在播放高清视频方面的不足。HSVD协议在支持当前瘦终端协议的主要控制功能的前提下,对视频显示格式为720p和1080p的主流高清视频也可以在瘦终端系统中通过HSVD协议在客户端流畅播放。本文首先对瘦终端协议的主要技术和H.264视频压缩标准技术进行了研究,然后设计和实现了瘦终端协议HSVD,以网络通信模块作为底层模块,用于向上层的各个模块提供服务。系统的主要模块包括网络通信模块、图像模块、音频模块、身份认证模块和键盘鼠标模块。各个模块之间保持了很好的独立性,使协议具有较好的可扩展性。在图像模块中以H.264算法作为图像的编解码算法,可以有效提高图像质量,并且拥有低码率和较强的容错能力和网络适应性。最后通过实验验证了HSVD协议的主要功能和播放高清视频方面的性能表现,结果表明,基于HSVD的Fly W系统比RDP、VNC网络流量占用率更低,网络流量更平稳并且能够流畅播放高清视频。
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN919.81

【参考文献】