TV Center Infrastructure IP-based And Evaluation Analysis

With the development of IP network technology,Program production system and broadcasting system of TV center are changing from SDI electric switching system to IP network switching system.Since the system-function of IP technology is more powerful,there are many advantages including simple and flexible structure,supporting numerous business transmission,based on opening platform,improving work efficiency and developing new media services easily.This is to meet the requirements of enriching the content of the program and numerous business signal exchange.Using Ethernet interfaces instead of SDI interface and using the IP network to carry AV signal have become a new trends of the digital television technology.Therefore,studying the technology of TV center infrastructure IP-based is of great significance.This article introduced the basic situation of the traditional TV Center System and IP-based technology advantages.It also analyzed the existing SDI and IP-based TV center infrastructure system status and the advantages of IP-based system,putting forward the facts of building IP-based TV center infrastructure which should be considered.It studied the key technology of the IP-based TV center infrastructure,including the technology of SDI Over IP,FEC and PTP synchronization.According to the current domestic and foreign IP-based TV center infrastructure and the application of IP devices from different manufacturers,the author put forward a program of the IP digital TV front-end systems technology solutions.Based on the system function,architecture design,backup protective mechanism.Devices technical indicators,devices selection and the system,we analyzed the performance.Besides,the author analyzed the basic content and Main technical indexes of IP-based TV center system test and put forward a method about measure PQA process.The practice shows that the proposed scheme is safe and reliable,the structure is reasonable,the function and performance meet the requirements of the design.To an extent,the results of this article will provide a reference for the future to build around IP-based TV center system.