Interactive digital television

This article analyses how the addition of interactivity to television brings fundamental changes to the broadcasting industry. The article first defines interactive transmission systems and classifies the different services offered according to the level of interactivity determined by two fondamental factors such as response time and return channel band. After defining the conceptual framework and the technological dimension of the phenomenon, the study analyzes the new types of interactive services offered. The interactive digital television value chain is discussed to give an understanding of the different business elements involved.