Design And Implementation Of Dual Demodulation Hd Set-top-box

More and more HD TV program vendor connecting methods is being shown in the market as the more and more HD TV screen is enjoyed by thousands families.To get more HD TV programs,consumers can played the TV program that downloaded from internet,still the consumer can watch the live program over the HD set-top-box,or watch needed TV program over the OTT Player.Even,some audio and video fancier play the Blu-ray Discs over the costy Blu-ray Player.However,some people do not want to keep many Blu-ray Discs at home and there are few HD cable TV programs around the consumers' home.Is there any new way for HD media connecting? Now,it is the show time of HD satellite TV Set-top-box that based on the DVBS-2 standard.‘Satelliter-Cinema'is presented by DBSTAR based on the Chinese advanced communication satellite service technology and plentiful resources.‘Satelliter-Cinema'Offer the e-publication(such as,audio,video,e-magazine,game,software and any other needed information)that authorized by publisher to customer's Set-Top-Box over PUSH-VOD technology by Renting the transponder of ChinaSat 6A communication satellite,still this e-publication is stored on the hard-disk of Set-top-box.The received e-publication,such as the latest films from Hollywood,classic TV programs,and any other popular shows will be played on PC\TV,and any other device after decrypted.Customer can play this multi-media any time from hard-disk.One Set-Top-Box is designed according to the terminal standard from DBSTAR.The Set-Top-Box can receive ‘Satelliter-Cinema' programs by working on DVBS-2 mode,it also can receive local cable HD TV programs by working on DVB-C mode.So it named dual-demodulation HD Set-top-box.This paper contains the composition of head-end and customer-end,still offer the Set-top-box schematic diagram after analysis for the terminal standard from DBSTAR.Then the CPU and other chips is confirmed,the outside circuit and the extension circuit is designed as per the schematic diagram.Meanwhile,all the introduction for software model,the method for the driver transplanting of tuner and demodulation,the data saving during the STB data PUSH,the working status changing,the insurance for the PUSH information safety transferring are all mentioned in this article.Finally,the hardware configuration and software function are integrated as per all the mentioned information.