Real-time Analysing And Detecting System For MPEG-2 TS Based On FPGA

Currently, our country is being placed in period from the analog TV, systems to the digital TV systems , the digital TV customer amount surges.The trend is the digital TV will have been widely used in future several years.In the popular digital TV systems ,monitoring digital TV service is being needed urgently.However, there is not appropriate monitor instrument to the digital TV currently.It is hard to diagnose signal of appearing the problem and insulate the digital instruments to be maintained , timely and conveniently.Usually,we just know the digital signal systems are in trouble while there is no picture on the screen.There are no clues to be followed up for the reason, the bitstream instruments have emerged in this situation.Currently in the front-end of digital TV systems, the approach of monitoring Digital Video Broadcasting (DVB) signal and service is more proactive and timely than that of according to the reflection of audience.The Transport Streams (TS) detecting instrument can make the technicians know the internal circumstance of the TS. In the future, they will play more important role in deciding service quality and customer's satisfaction.This dissertation makes a deep research to the DVB-ASI decoding, the principle of real-time analysing and detecting MPEG-2 TS based on Field Programmable Gate Array (FPGA). Firstly, the dissertation presents some basic concepts of digital TV systems and MPEG-2/DVB, ETR101 290, Asynchronous Serial Interface (ASI). Secondly, it introduces the basic principle of FPGA and the software of development FPGA. Lastly, according to the decoding rule of DVB-ASI receiving system and the structure of MPEG-2 TS, the scheme which can be used for analysing and detecting the MPEG-2 TS based on FPGA is proposed and realized.In this system, the FPGA plays the role of a nucleus, which mainly completes decoding, detecting TS MPEG-2, and withdrawing the Program Special Information (PSI) etc. This system compares with the traditional code analysing instrument to have...