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The terrestrial digital television systems have bee n stablished and expanded by the worldwide. It is expected that 1.4 billion analog T V sets will be replaced by set-topboxes and digital receivers TV sets, also known as access terminals. This fact shows the relevance of these devices that receive and dec ode the digital signals. Given the diversity of the hardware platforms of different ma nufacturers and different set-topboxes profiles, there is a need for a major investm nt to create and develop applications and Middleware because for each hardwa re platform, different source codes need to be developed. Beside the fragmentatio of implementations resulted by the diversity of hardware platforms, there is an in creasing demand for performance and solutions with more functions. To address these questions, there are organizations, initiatives and emerging technologie s, some of them based on software components, that are consolidating techniq ues that can be applied to the software stack of a set-top-box, from among we emph asize the UHAPI, M3W, IOS and GStreamer. This master thesis deals a comparati ve analysis of these technologies and presents a set-top-box software architecture pr oposal called Arquimedia. Performance tests were made and analyzed to validat e the proposal.

Arquimedia: uma proposta de arquitetura de software para terminais de acesso à TV digital interativa.