CAJ | 학술논문

为实现计算机资源的集中管理、高效利用和保密控制，设计并实现一种基于视频流的云桌面系统。服务端使用通用服务器和VirtualBox虚拟化工具实现桌面虚拟化，客户端采用基于ARM平台的飞思卡尔i.MX6DL处理器进行硬件解码，虚拟桌面图陣压缩中应用改进后的 H.264新一代视频压缩算法，桌面视频流的传输中应用平滑网络流量的传输方式，对客户端的鼠标键盘消息重定除中使用Linux内核模块。与常见桌面传输协议的比较测试结果表明，当虚拟桌面分辨率为1280×720时，该系统具有更稳定的桌面显示效果、500 KB/s左右的较低网络流量，以及120 ms左右的陞应时间。
위실현계산궤자원적집중관리、고효이용화보밀공제，설계병실현일충기우시빈류적운탁면계통。복무단사용통용복무기화VirtualBox허의화공구실현탁면허의화，객호단채용기우ARM평태적비사잡이i.MX6DL처리기진행경건해마，허의탁면도진압축중응용개진후적 H.264신일대시빈압축산법，탁면시빈류적전수중응용평활망락류량적전수방식，대객호단적서표건반소식중정제중사용Linux내핵모괴。여상견탁면전수협의적비교측시결과표명，당허의탁면분변솔위1280×720시，해계통구유경은정적탁면현시효과、500 KB/s좌우적교저망락류량，이급120 ms좌우적승응시간。
In order to achieve centralized management, efficient use and privacy control of computer resources, a cloud-desktop system based on video stream is designed and implemented. A general-purpose server with VirtualBox virtualization technology is applied to achieve desktop virtualization. A freescale i.MX6DL ARM processor for hardware decoding is the core of client terminal. The improved state-of-the-art H.264 video compression standard is applied in desktop image compression. A smooth network traffic transfer method is used in desktop video stream transmission. The Linux kernel module is used to redirect mouse and keyboard messages. Experimental results show that when the virtual desktop resolution is 1 280×720, this cloud-desktop has a more stable display quality and less network traffic around 500 KB/s compared with commonly used desktop transfer protocols, in addition the very short response time around 120 ms.