Analysis And Research Of Video Coding Technology For Digital Television System

With the improvement of the technology, especially in the fields such as computer technology, data coding and compress, digital modulation and VLSI, the world electronic information industry enter into the digital era. In the field of broadcasting and TV, since America announced the analog TV will be abolished till 2006, the digital in the field of broadcasting and TV is impelled greatly, and all the developed country in the world enter into the train of developing the digital broadcasting and TV equipment and system. The MPEG-2 encoding technology is one of the key technique which is used to transmit the digital TV signal.The international standard of moving picture compress and encoding, MPEG-2, is based on MPEG-1 accomplished by the development of multimedia technology, digital TV technology, multimedia communication and mutual TV technology, which rang over large application and is of generic digital picture encoding standard. This paper depicts roughly the digital TV knowledge and the development status allover the world and in China of the digital TV is chiefly depicted in the second chapter; the MPEG-2 technology is depicted in details in the third chapter and the definition of main MPEG-2 syntax will be given in the end; in the fourth chapter; I will introduce the situation of the Shandong CATV station in the fourth chapter ;I will make a compare between different compress rate of the moving picture by making experimentation in the fifth chapter; In the end of this paper, summarization and prospect of MPEG-2 encoding technology are presented and the applications in the relevant field also are given.The key technique of digital television is decompressing and demultiplexing the MPEG-2 stream. I master the theory of MPEG-2 decoding through this design. The emphasis of this design is to analyze the quality of decompressed moving picture. It's known that, in the chain of source picture—compressing coding-transmission-decode and receive, there exists loss in the last 3 processes. No matter how excellent the...