基于Mirror Driver的屏幕共享方案研究与实现  

Research and implementation of screen sharing scheme based on Mirror Driver

作　　者：周恕义[1] 李斌[2] 贺玉虎[1] 

机构地区：[1]北京工业大学现代教育技术中心,北京100124 [2]北京工业大学计算机学院

出　　处：《计算机时代》2014年第8期4-6,10,共4页Computer Era

摘　　要：针对远程教学中学生机端同步显示教师机端教学内容的需求,提出了一种基于Mirror Driver的教师机端屏幕共享解决方案。该方案基于教师机端对DirectDraw非高依赖和Mirror Driver能精确高效捕捉屏幕变化区域的特点,首先对教师机端屏幕高效捕捉;然后将捕捉的变化图像压缩成JPEG格式,通过网络传输到学生机端;最后学生机端提取JPEG数据,并转换成BMP图像,将多变化区域图像合成显示。实验结果表明,此方案能够实现高效的屏幕捕捉并同步显示,具有良好的实时性,可以应用于远程监控、远程教学等领域。To meet the demand of synchronous display between teacher-side screen sharing technology based on Mirror Driver is student-side and teacher-side in distant teaching, a resolution of introduced. In view of the characteristics of non-high depondence of DirectDraw on the teacher-side and Mirror Driver captures the screen variation region efficiently and precisely, this resolution firstly captures the teacher-side screen effectively. It compress the snapped varying picture to JPEG format and transmit it to the student-side over the network. The student-side extracts the JPEG data, converts them to BMP picture, composites and displays the changing area. The practice shows that this method can capture screen efficiently, and display synchronously. It has a good real-time performance, and may be applied in the domain of remote monitoring and distant teaching.

关 键 词：MIRROR DRIVER 屏幕共享 图像合成 JPEG 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]