This paper presents a survey of the worldwide use of Digital Television interactivity (DTVi) standards. First, we recall some concepts of first-generation interactivity middlewares released in the early 2000s, such as the European MHP (based on Java) and the Japanese BML (based on XML). Then, we cover the new standards (emerging after 2010) that introduced the new Integrated Broadcast Broadband (IBB) model, which combines broadcast signals with a broadband interface and leverages synergies to offer high-quality, flexible, interactive and customized services and applications to viewers. Regarding IBB systems, we also cover the main aspects of their architectures and innovations introduced by this kind of technology, such as support to companion devices, e.g., smartphones, tablets, targeted advertisements, and integration with Internet-of-Things (IoT) devices. Finally, we show the current adoption of different IBB systems around the world as well as current challenges regarding IBB technologies.
Resumo-Este artigo apresenta uma nova metodologia para a realização de testes de conformidade em implementações Ginga-NCL, baseada em dois elementos principais e complementares: um núcleo de controle e execução, compatível com a especificação Ginga-NCL para a TV digital brasileira e portanto completamente portável para outras plataformas, e servidores de eventos, dependentes do sistema sob investigação, que permitem a execução de testes cuja avaliação necessitaria de informações não disponíveis ao Ginga. Com o objetivo de validar da metodologia proposta, uma suíte de testes baseada na mesma foi implementada. Como resultado, testes de conformidade podem ser executados isoladamente ou agrupados em módulos, com um alto grau de automatização.
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