Mpeg2 Encoder In The Digital Television System Design Studies

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 equipment is one of the key equipments which is used to transmit the digital TV signal, which quality will effect directly to the quality of broadcasting and TV transmission.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 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; the MPEG-2 hardware is introduced in the forth chapter, including the circuit module division , circuit module function introduction and the design and implementation of circuit module, at last, the research and conclusion about high speed design met during the circuit design are presented.During the implementation of MPEG-2 encoding equipment, a lot of logic, especially the high speed design, are need to implement the associated syntax and control function, which is the design emphases and difficulty. This paper depicts the application of CPLD, FPGA used in the implement of MPEG-2 in details, including the method of logical design, implement, simulation and logical code of important part. In the end of this paper, summarization and prospect of MPEG-2 encoding equipment design are presented and the applications in the relevant field also are given.