The Analysis And Design Of The Small And Medium-sized Television Digital Television Broadcast System

School teaching as an important territory, has become an important part of social culture. And the construction of campus culture, but also directly relates to the success or failure of link of education. By building a healthy and positive campus culture, has gradually become the contemporary institutions of higher learning in the process of development and breakthrough, an important point. In this environment, the role of the campus television station has got into full play and show; And, as a kind of campus media, campus television has a strong public opinion transmission advantage, it should be in institutions of higher learning should play a role in the construction of campus culture. It is considering the role of the campus television station, this article from the new stage of digital television broadcast system of campus TV station, explore the campus television broadcast system optimization scheme, find using campus television station of small and medium-sized digital television broadcast system.Considering the more advanced television were adopted, digital broadcast control system, the broadcast way of server based on the hard disk is the practical application, to build and implement the video server as the core and main body of new TV media. So, in this paper, we focus on the hard disk broadcast system of broadcast system for analysis and research.Usually, the small and medium-sized television digital broadcast system, especially the hard disk broadcast system contains5different parts, respectively is: equipment, total control and points control upload and UPS etc. In this a few parts, equipment parts can be achieved for broadcast equipment, application server, to retain the unity of the switching equipment and other equipment management; Is always charged with the task of mainly for foreign signal to continue scheduling, to ensure that each channel broadcast foreign signal in real time; Control is mainly used to manage the internal channels broadcast; Upload the function of the module, signal is the television station owned by a variety of media, such as video and XDCAM blu-ray discs of signals from the digital baseband signal to a hard disk; UPS part can provide power supply for emergency power, to ensure continuous and uninterrupted television broadcast tasks.Contained in the hard disk broadcast system, should have the functions of signal management, daily management, program management, and various statistical management and so on. Among them, for the management of the signal, need for TV station channel of different requirements in terms of security; And daily management, mainly for the maintenance of equipment, optimization of the backup of the system and the network environment such as all kinds of business management. In the use of hard disk broadcast system, the system is a large amount of data, the data security requirements are very high, so, this article emphatically from the Angle of the combination of software and hardware, to eliminate potential system hidden trouble, ensure the safety of the broadcast task stability, further improve the performance of the system.Design and development of digital television broadcast system, this paper mainly contains two aspects of content, respectively is the establishment of the database and front-end application development and so on. Through the system, can effectively improve the work efficiency, television broadcast greatly reduce accident.