Design And Implementation Of DVB+OTT High Definition Set-top Box Based On Android System

As the key factor in the digital TV industry chain,digital TV set top box plays an important role in the whole operation of digital tv.With the integral translation of digital TV in the process of advancing,with user requirements of digital audio-visual constantly improved,followed the development of digital TV industry growth,the traditional digital TV set-top boxes are IPTV set-top box,from telecom operators from the Internet company OTT machine top box,smart phones,tablets and other new equipment brings competitive pressure.Because of these new devices based on Internet technology not only has a huge amount of news,music,video and other resources and the integration of social software,games and other rich interactive entertainment,has huge impact on the traditional cable TV market.DVB+OTT HD set-top box not only has the traditional set-top box fixed program resources but also has the function of the new OTT set-top box.Increase the number of video and entertainment resources the user faces.Therefore,DVB+OTT HD set-top box greatly increased the competitiveness of the radio and television operators,but also for our common set-top box user equipment to enhance the great convenience.And with respect to the relatively small screen size of mobile tablet PCs and other devices,based on the living room TV DVB+OTT HD set-top box has a better user experience.We are now in a critical period of the development of digital TV and HDTV,the interactive digital TV industry is booming.DVB+OTT HD set-top box(Interactive Digital TV)is the future development direction of cable TV,in the triple play,play an important role in multimedia broadband network construction and national information infrastructure.Based on the Android system,this paper designs the DVB+OTT HD set-top boxes based on eCos or other systems,and designs the system decoding part.The main contents of this paper include:1,describes the operation of Android system DVB+OTT HD set-top box platform,the use of the main functional modules;2,Android system based on the design and implementation of digital television,including system memory allocation,SELinux configuration,video player design,DLAN function design and Demodulator and TUNER driver debugging.Through the design of the final completion of the Android system based on DVB+OTT HD set-top box,not only to achieve the MPEG2-TS based cable digital TV viewing,but also to achieve the TCP/IP protocol based on the OTT video on demand function.At the same time Android system provides a wealth of third party APP,there are users can bring the Internet,social software,games and other rich user experience.It will greatly improve the competitiveness of the digital TV industry in the integration of three networks and multimedia broadband network.