Trends in interactive services for digital television infrastructure

The challenge of multimedia communications is to provide applications that integrate text, image, and video information and to do it in a way that presents ease of use and interactivity. This paper deals with trends in interactive services for digital television infrastructure from the point of view of return channel and flow of information. We start with a short overview concerning previous work on this hot topic. Then, we deal with the interactive services in digital television infrastructure. After that adequate solutions for return channel are presented. Finally, flow of information in the interactive TV services for mobile devices is described including applications on mobile devices.