Second Screen prototype for broadcasted digital TV users in ISDB-Tb standard

This paper describes a proposal for a Second Screen solution designed for the Brazilian Digital Television System - SBTVD. Our solution allows users to access and to interact with additional content related to the broadcasted program through the internet (synchronously with the content displayed on digital TV screen). The proposed architecture makes use of a specific protocol, the Transmission Transport Stream. It will carry the information needed to allow receivers of digital TV to communicate with multiple Second Screen devices relying nearby (such as smartphones, tablets, and PDAs). These devices must be running a dedicated software application in order to connect to the World Wide Web accessing the desired additional information. The motivation for this work is to bring to users with limited resources, the ones watching broadcasted over the air programs, the opportunity to benefit from the Second Screen technology. These users, in possession of our Second Screen mobile application will be able to access additional information synchronized with the programs live broadcasted, opening new opportunities for broadcaster and users.