ABSTRACT
PeterWeitzel BSc (Eng) CEngMIEEMSMPTE Manager, Broadcast Technology Developments BBC Technology
‘Interactive TV’ can mean a variety of things to each broadcaster, and for the engineers covers a wide range of technologies. There are two main categories of service when interacting with the TV:
. Enhanced TV, where streams of information are ancillary to the programme and the selection is made in the TV or Set-Top Box (STB). . Interactive TV, where additional information is provided and can be selected in the TV or STB but may engage on a oneto-one basis with that viewer. This implies a back channel from the TV or STB to a central server.
