| Digital Television (DTV) is the third generation TV after black and white TV and color TV. Digital Television is the system used to transport, receive, process, store and control digital TV signals. It is a kind of Information Service being developed in the whole country which involves technology of computer, multimedia, communication network. Set Top Box (STB) receives and transforms digital TV signals into the signals which analog TV sets can display. It's an important transition product of DTV System. The Digital Set Top Box is also called IRD (integrated receive decoder). Through the Set Top Box, we can receive the digital TV signals with analog TV.The main purpose of this paper is to research and implement of the channel decoder's hardware of SDTV Set Top Box. The task is based on ST's SDTV channel decoder solution with a highly integrated single-chip fully digital QAM demodulation STV0297. Chapter 1 introduced the interrelated background of this item; Chapter 2 introduced the coding and decoding theory about channel; Chapter 3 described the hardware structure, the function, the realizing principle and the method of the PCB design; the scheme and flow chart of software design are also described in detail in Chapter 4; Chapter 5 described the testing and analyzed the result; At last, Chapter 6 presented the summing-up of this dissertation.This system outputs error-corrected MPEG-2 Transport Streams which complies with the DVB Common Interface format. |
