| In recent years, with more function and stronger processing ability on smart mobilephone, more and more people want to watch video or listen to music on the device. However, in the traditional ways, people share their video by copying detail to PC, which sounds difficult. Wi-Fi Direct which is advanced by Wi-Fi Alliance let two different Wi-Fi devices establish point to point connection ignoring connecting to the WLAN, which reduce the wired constraint and make people’s live easier.This paper comes from a product of mobile phone at Lenovo Mobile based on the standard of China Mobile Communication Corp, which is enhanced application with innovation. The paper introduces a system to establish a connection between Android device and wireless adapter with the function of Wi-Fi Direct connected to HDTV by HDML User can see the mobile’s detail on HDTV. Android subsystem collects and encodes the audio and video element, then sends it by Wi-Fi Direct module. Wireless Adapter receives and decodes the audio and video element. In the System, I am participating in the implementation of Android subsystem.Firstly, the paper compares Wi-Fi Direct with related wireless transmission technology, which analyses the great advantage of Wi-Fi Direct in the transmission rate. Secondly, the paper talks about Wi-Fi Direct standard and Android platform. In the requirement analyse phase, the paper mainly talk about the video and audio share system. Then, the paper analyse Android subsystem requirement from function and performance. In general design phase, the paper divide Android subsystem into client side and server side. In the detail design and coding implementation phase, the paper begin to work from Java logical control and view at the client side, JNI and the communication between the client side and server side. In the test phase, the paper testifys Android subsystem. At last, the paper talks about the defect of the system and place need to improve. |
