Open graphical framework for interactive TV Multimedia enduser terminals are expected to perform advanced user interface related tasks. These tasks are carried out by user interface runtime tools and include, among others, the visualization of complex graphics and the efficient handling of user input. In addition, the terminalu0027s graphical system is expected, for example, to be able to synchronize audio and video, and control different contexts on the same screen. Finally, the availability of high level tools to simplify the user interface implementation and the adaptiveness of the user interfaces for a diversity of configurations are, as well, desirable features. We present a layered model that meets the just mentioned requirements. The architecture is divided into five different layers: hardware abstraction layer, multimedia cross platform libraries, graphical environment, GUI toolkit and high level languages. Moreover, a prototype system based on the architecture, targeted to digital television receivers, was implemented for the purpose of testing the validity of the concepts. In order to evaluate the prototype, some already developed MHP compliant digital television applications were tested. In addition the prototype was extended with a high level profile(i.e., SMIL support) and a low level one, (i.e., access to the frame buffer memory).

Stage UI: Live TV Application Tailored for Mobile Devices Change in cultural trends of multimedia deployment has put a new weight to rolls and uses of mobile devices. The size of the screen and touch possibilities provide additional dimensions in designs of the user interfaces compared to the TV exclusive applications. In this paper we have explored new possibilities to extend the STAGE TV application in two directions: menus layout and deployed devices. This approach we named Stage UI  an interface for hybrid TV receivers based on the Android operating system for TV. This interface has modern TV functionalities that allow users to interact with Google services, and to promote and prioritize content. This solution is available for both, overthetop devices, and for hybrid solutions via Android TV Input Frameworks. Stage UI is completely modular and customizable to the operator as the end user. Due to its interface scalability, it is also adaptable to mobile devices. In this paper we present one solution how to adapt the Live TV application for mobile devices.