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This report describes the design and functionality of the LinkedTV user interfaces. The designs are guided by the results of the user studies conducted in the second year of the project and the evaluation of the initial prototype in the third year of the project. The first interface that we selected is used for applications that run on a TV. The development of this interface is a joint effort of Noterik, RBB and Condat. We refer to this interface as the single screen solution. Using HbbTV technology the interface is provided as an overlay over a TV broadcast. The interface provides a straightforward way to access background information generated by the LinkedTV system. The interaction with the interface is done through the remote control of the TV, or the remote control of a set-top box. The interface and the way that information is presented are purposely designed to be simple and basic. The TV is not suited for reading long texts and the remote control is not suited for advanced interaction. The interface supports basic control of the video by selecting chapters, and provides access to basic information about the persons, organizations and locations that occur in the video. The generic concept of the interface makes it suited for any type of TV program.

The second interface we selected is used for so-called companion applications. A companion application is a Web application that is tailored to a specific TV program. It can serve multiple functions, including a second screen during the broadcast, selection of episodes or fragments for on-demand viewing, and exploration of additional information after watching a TV program. To be more precise, we designed a set …