基于Wi-Fi Direct的公共显示器控制系统的研究

Investigation on control system of public display based on Wi-Fi Direct

针对传统公共显示器控制系统控制方式的繁琐,灵活性低且受限于网络状态而达不到实时更新的效果,提出一种基于Wi-Fi Direct的公共显示器控制系统。该系统将Wi-Fi Direct技术与多屏互动技术融合到公共显示器的控制系统中,设计和实现了Wi-Fi Direct连接、屏幕数据与音频数据的获取、数据的编解码以及实时传输与显示,最终达到不受网络状态约束的同屏控制效果。测试结果表明,基于Wi-Fi Direct的公共显示器控制系统可实时更新公共显示器播放内容,具有很高的灵活性,摆脱了以往繁琐的控制方式与网络状态变化的影响。

Because the traditional public display control system is so cumbersome,low flexibility and limited by the network status that can not reach the effect of real-time updates, a public display control system based on Wi-Fi Direct was put forward in this work. Multi-screen interactive technology and Wi-Fi Direct technology were integrated into the control system of the public dis- play. The design and implement of the Wi-Fi Direct connection, the screen data and audio data acquisition, data encoding and de- coding, and real-time transmission and display were realized based on this method. Finally, it achieves the same screen control effect without the network state constraints. Test results show that the public display control system based on Wi-Fi Direct can up- date the broadcast content of the public display in real time, and has high flexibility, which is free from the traditional cumbersome control methods and the influence of network state changes.