In the push system of digital TV big data, data push is to provide mobile multimedia broadcast data service for end users, and to provide users with value-added experience. With the development of digital TV multimedia broadcasting operation, the development of big data push service is pushing forward; its importance is becoming more and more important. Simple television program broadcast business has been far from meeting the customer needs, users want to get more diversified services, the form of the traditional client to solve the opposite point of the value-added business has become less viable, need to establish a new radio value-added business model, construct the new radio value-added platform, solve universal problems of a variety of different terminals, reduce the complexity of terminal integrated use of value-added services, all these become the core of digital TV data push system.
Digital TV data pushing system is a technical way which pushes transmission of text, images, audio, video and other multimedia information data to the user terminal by the opposite point of the broadcast.
Have the following characteristics：
Headend pushes forwardly, don’t need the user sends a request
For the content pushed to the terminal, the terminal has a choice of receiving or filtering
The process of pushing and saving is completed automatically, without user participation
Business use and transmission process is separate, the terminal can be used repeatedly in offline case
When headend pushes contents, combining with timing download, scheduling push time effectively, using bandwidth effectively
The pushing contents of big data push system as follows:
Push graphic data: a push mode is based on the pictures and text combination, providing information services to the terminal, including government information, emergency radio, news, sports, culture and entertainment and so on
Push video data: based on the video content, including video, film and television news media, special video applications etc
Other data push: according to the actual business development needs to push other forms of documents, including software push, the game push, the end of custom files and other contents