基于达芬奇DM6446的3G无线视频监控在幼儿园的研究

摘要

摘要在幼儿园里，由4个CCD摄像机采集到的模拟视频信号，经过4路视频采集卡处理后传入视频解码器内，进行A／D转换，然后把符合ITU-BT-656标准的数字视频信号输入到达芬奇DM6446视频处理子系统的前端进行预处理，经过CodecEngine编码后通过USB2．0总线端口送入5G模块，待5G模块接到家长手机的视频请求后，5G模块会通过本身集成的H524M协议栈自动接通SIM卡，利用5G无线网络发送孩子们的视频图像到5G手机上，实现画面的实时显示。%In the kindergarten, the analog video signals collected by four CCD cameras are inputted to a video decoder, after which are processed by the video capture grabber with four ways,then the digital video signals accorded with ITU- BT. 656 standards are inputted to the video process subsystem of DaVinci TMS320DM6446 and are pretreated.The signals are encoded through Codec Engine by USB2.0 bus,then they are inputted to a 3G module.After the 3G module receives the request from parents＇ phones,it can automatically connect SIM card by the integration of itself H324M protocol stack .Finally, children＇s real-time video images can be sent into the parents＇ 3G phone and realize real-time display through 3G wireless network.