A Model-Driven Approach for Incorporating Reactive Rules in Declarative Interactive TV Applications

This paper discusses an approach for incorporating ECA rules in interactive TV applications described in the multimedia declarative language adopted for the Brazilian Digital TV (SBTVD) platform. We discuss the limitations which are inherent in this platform and instead of proposing non-conformant extensions to the platform, we propose a model-driven approach which takes a rule model at a high level of abstraction and transforms it into the multimedia declarative language used in the Digital TV platform. This ensures the inclusion of context-aware rules into interactive TV applications such that they can be reactive to the user´s context and alter their behavior according to rules referring to events and conditions from the user´s environment. We illustrate the approach with a running example that considers contextual information to selectively display certain private information depending on presence detected by context-sources connected to the set-top box.