摘要
为提高会议或教学过程中演示软件操作的移动性,分别利用蓝牙和Wi-Fi无线连接开发由Android平板电脑控制Windows PC机上运行的PowerPoint图文传输系统。由PC机将备注文本和演示幻灯片的gif图像压缩数据传输到Android平板上,以显示注释和相同的图形界面,将演讲者在平板触摸屏上的绘图和标注信息实时传输到PC机上进行准确地坐标映射和标绘信息同步显示,通过控制命令和控制数据的传输实现平板电脑对PPT演示界面上画线、写字、擦除、局部放大、滚动、白屏等操作,使其兼备电子白板的功能。
To provide good mobility of the presentation software manipulation, the Bluetooth and Wi-Fi wireless links were employed respectively to develop the image/text transmission system controlling PowerPoint running on the Windows platform by an Android tablet. The notation text and compressed gif image data of the presentation slides were transmitted from the PC to the tablet where the same notation and graphic interface were displayed. By the reverse direction of transmission, the plot and label information was also sent to the PC and redrawn on the PPT slide in real time by precisely coordinate mapping. By transmission of controlling commands and data, many operations can be remotely performed on the tablet such as drawing lines, writing, erasing, local zooming, scrolling, and white screen, with the features of electronic whiteboard.
出处
《计算机工程与设计》
北大核心
2015年第2期556-560,F0003,共6页
Computer Engineering and Design
基金
国家自然科学基金项目(61077036)
无线宽带通信与信号处理重点实验室开放基金项目(12108)
广西教育科学"十二五"规划课题基金项目(2013C018)
关键词
演示
无线控制
平板电脑
安卓
演示文稿
presentation
wireless control
tablets
Android
PowerPoint
