Research Of DMB-T Digital Terrestrial Television Receiver

From the beginning of TV broadcasting, great changes have taken place in TV technology, Especially from the 1990's, along with the rapid development of electronic technology, computer, telecommunication. After the digital TV is invented , the research on it's standard , protocol and industrialization is popular. In china government also pay more attention to it and made plan to spread it. Cable digital TV began to broadcast in 2003 . Terrestrial digital TV began in 2005. To 2005, the broadcasting of analog TV of PAL standard will be stopped. Chinese standard of digital terrestrial TV broadcast have released , which will become the most popular media and affect the people's life deeply.First, this article introduced the current statement and standard of digital TV around the world , analyzed and compared them to summarize the characteristic of each standard. After the general introduction of the construction of the digital terrestrial TV set-top box , this article described the hardware system of set-top box for the channel design and PCB design in detail. In the chapter of debugging, first introduced the debugging tools generally, and then analyzed the theory and process of the hardware driver. At last ,the test standard and result is presented.