Multimedia Network Controller Research And Application In The Field Of Monitoring

As a new device quickly developed in the several years,the network mult_imedia server has become the main product in the third digital video monitor system and been familiar with more people.But in the application based in broadband network it's full of challenge how to make the high definition video stream transport through the network in cheap way with adjusting the definition in dynamic way,supporting the function of video-on-demand and video broadcast.In this file it is studied and analyzed in both aspects of hardware and software to make a most possible answer.In hardware,the chip Hi3510 of HaiSi which is the high performance embedded SoC is used as the main controller and processer combined with 3 cascaded TW2835s of TECHWARE used to scale,cut and splice several pictures and one AD8115 of ADI used to realize the switch of 16 inputs to accomplish the work of complex change between input and output,HD picture and data transport in high-speed.Besides,the local audio & video strorage and demand,the solution of VGA signal's input & output,the romote control of cameras are the additional points.In the aspect of software,it uses the servo program to complete the initialization of several chips such as Hi3510 and conrol.The initialization and control of TW2835 and AD8115 is operated by a singlechip with its programs.The PC program based in WEB techknowledge acrossing multi-system accomplieate the user interface and the decode work of audio & video stream in H.264 code.As the greatly superior network multi-media server,it will bring the completely new idea to the area of video monitor and become the start to challenge the next higher goal.