SMS como canal de interatividade para dispositivos portáteis

Abstract

Digital TV is increasingly present in the lives of Brazilians, because year after year, a large number of people are migrating from analog to digital as the analog system has a date for its shutdown. With the advancement of digital TV, you may notice significant improvements in audio and video technology used, it is also possible to establish an interaction between the viewer and the TV receiver device. In Brazil, this interaction occurs through the Ginga middleware technology developed by Brazilian researchers to standardize the interactive content sent to devices able to interpret it. In addition to televisions, another popular device is the mobile phone, which is present in a significant way across the country. The technology adopted by Brazil for the digital transmission of television signals, allows the phone to receive programming dedicated to portable devices in open and free way. The phone has a certain advantage over television due to its connectivity. Once the mobile phone is on most of the time connected to a telephone network, and may be 2G, 2.5G, 3G and 4G in the near future, while the television set is for the most part of the time offline (disconnected). This work presents a proposal to use the SMS service as interactive channel, also known as the return channel, for portable reception. This service is present in all mobile phones, and therefore may contribute to the popularization of the use of digital TV technology in the country.