基于802.11网络的无线视频传输系统设计  

Design of Wireless Video Transmission System Based on 802.11

作　　者：张存利[1] 吴怡[1] 黄鸿强[1] 颜泽球[1] 

机构地区：[1]福建师范大学物理与光电信息科技学院,福建福州350007

出　　处：《现代电子技术》2010年第4期70-72,78,共4页Modern Electronics Technique

基　　金：福建省自然科学基金项目(2008J0017);福建省科技重点项目(2005H026);福建省教育厅A类研究项目(JA06006)

摘　　要：提出一种基于S3C2440A硬件平台和嵌入式Linux操作系统的无线视频传输系统设计方案,介绍系统的总体设计和主要功能模块的设计与实现,主要包括视频采集模块、无线视频传输模块的硬件设计,嵌入式Linux的驱动程序移植、MPEG-4数字视频软件压缩以及应用程序实现等。该系统实现了802.11无线局域网内的视频传输,实时监测网络的数据流量和拥塞状况,自动调节视频的压缩比,提高网络传输质量,保证视频播放流畅性,可靠性高且易于使用。The design of a wireless video transmission system based on S3C2440A and embedded Linux OS is presented,it mainly introduces structure of the system and functions of the key modules, such as hardware design of video capturing and wireless video transmission modules,implement of the driver transplantation based on Linux, MPEG- 4 digital video software encode and the application program software. The video transmission based on WLAN and this system has been realized,real- timemonitoring network data flow and congestion conditions, controlling the video compression ratio automatically,improving the network transmission quality,ensuring the fluency of video playing. High reliability and convenient usage are achieved.

关 键 词：嵌入式LINUX 无线视频传输 MPEG-4视频采集 驱动程序 软件压缩 

分 类 号：TN919.8[电子电信—通信与信息系统]