The Design And Implementation Of A Digital Broadcast System For Jincheng Anthracite Mining Group

In recent years, fundamental changes have taken place in radio and television technology. From the collection, production to broadcast, radio and television system are gradually changing from analog system to the digital system. With the development of TV technology and computer technology, especially the gradual maturity of the video compression technology, large capacity storage technology and network transmission technology, the digitization become the inevitable trend of hard disk broadcast, it can be largely improved the quality of radio and television programs and work efficiency.As an important role of television planning, production, and final packaging effect, So,broadcast control center has traditionally been referred to as “the heart of the television”. The revolution of digitization of TV center, are susceptible to interference, low transmission loss is big, reproduction performance shortcomings, make the television broadcast quality has a huge change.Digital television technology as the core of digital video, digital audio, digital switch,digital keying, decoding, digital transmission, such as the adoption of new technologies, not only make the picture to ensure the quality, also on the concept of the entire broadcast control system design, equipment structure and operation mechanism has a far-reaching influence.At the same time, the broadcast system is the key to control the signal quality, plays an important role in television technology, so the implementation of its digital transformation is necessary. Among them, the construction of hard disk broadcast system is the core content of digitization of broadcast control system, and is the best way of broadcast. Besides, the emergence of large capacity storage media and the maturity of video compression technology make the advantage of hard disk storage system to be fully played, avoid the influence of equipment failure on broadcast, and enhance the advantages of multi-channel shared resources. Digital transformation makes regularly broadcast, various spots, series broadcast among programs has been effectively controlled. The program is stored in the hard diskin the form of compressed file, which can largely avoid the distortion situation. In addition,both storage and broadcast of program materials is conducted around digital compression in the hard disk broadcast system. This is the core idea of the digital television broadcast system transform.Through the development and advantage of digital broadcast system, functions and characteristics of digital broadcast systems, the actual application in digital broadcast system and so on, this paper analyzes the techniques of system, and introduces the design principle of digital hard disk broadcast system, working process and maintenance knowledge, according to the actual situation of medium-sized and small-sized television station, and the practical application of Jin coal television hard disk broadcast system. The system has laid a good foundation for the operation and maintenance in the future.