National Standard Based On DMB-TH Digital TV Set-top Box Design And Implementation Of Front-end

Analog to Digital TV conversion is the world's television industry development trend. At present, China has launched a process of digital TV plans by 2015 China will shut down analog TV signals. As digital television transmission of digital terrestrial broadcasting, in 2006 China put forward an independent national standards for DMB-TH.This article discusses the national standard based on DMB-TH digital TV set-top box front end design and implementation. Digital TV set-top box STB (Set Top Box) is a connected TV set with an external signal source equipment. It can be converted into compressed digital signals TV content, and the TV display. Signal can come from cable, satellite antenna, broadband networks, and terrestrial broadcasting. This paper achieved national standard terrestrial digital television program reception, demodulation, decoding, playing and other processes. Digital TV set-top box tuner front-end design includes a signal receiver, demodulator, and the main chip data demodulation data stream demultiplexing, etc.. The topics include a front-end program selection, design, debugging and other hardware production process control software has also achieved the preparation of reconciliation and recovery software. Article in turn introduced a digital television, the national standard digital TV standard, overall system, the hardware design, software design and other aspects.Finally, to fully understand the entire process of digital TV reception on the basis of the principles and achieved a DMB-TH Digital TV receiver front-end cards to achieve the terrestrial digital TV broadcast, to achieve the desired objectives.