Design And Implementation Of Multi-Terminal Digital TV Program Sharing System In Home Mobile Environment

In recent years,with the development of digital TV technology,the digital TV set-top box market is gradually saturated,coupled with the vigorous development of mobile Internet,it brings some challenges to the traditional digital TV set-top box market.In the digital TV set-top box market,the traditional digital TV set-top box not only face the challenges brought by Internet set-top boxes(such as IPTV,OTT,etc.),but also face the challenges from various mobile video APP in the mobile Internet.Faced with these challenges,digital TV operators and suppliers around the world are constantly exploring new technologies and services.For example,the integrated digital TV set-top box,smart education services,HBBTV services and multi-screen interactive technology.However,these technologies and services have problems such as high box cost and high dependence on Internet bandwidth.Although multi-screen interaction can share the resources on the mobile phone to the TV,it can't watch the live digital TV programs in the digital TV network on the mobile phone,and users have practical demand for watching the live digital TV programs on the mobile phone.This thesis studies the design and implementation of multi-terminal digital TV program sharing system in the home network environment.The system consists two parts: client and server.The server is transformed from the existing digital TV set-top box platform let it connected to the home LAN.The client is a mobile APP running on the mobile terminal that connected to the same home LAN.The server obtains value-added service authorization information,digital TV program information and other data through the digital TV network,and provides login authentication,program browsing functions to the client through the REST ful API.At the same time,the server obtains the program audio and video data from the digital TV network,and provides the program playing server for the client through the streaming media service.In order to ensure the security of digital TV program data,this thesis also designed a digital copyright management subsystem to ensure the security of audio and video data of digital TV programs from the server to the client.The test results show that the system can play digital TV programs from the digital TV network on the mobile terminal,and the playback is stable and smooth,and the transmission link is secure.The system not only protects the existing investment of digital TV operators,increases their revenue,but also enhances the user experience of digital TV users,thereby attracting more users and driving the growth of the digital TV set-top box market.