Zapping to TV or radio stations wherein a discarded station cannot be re-zapped during the zapping session or until the programme has changed

摘要

A system and method for controlling channel changes in television or digital radio having a tuner or receiver (12) . The system comprises an enhanced zap mechanism (34) that is operable to monitor channel change commands received from a user over a zapping session, identify discarded channels and prevent the tuner or receiver (12) from returning to the discarded channels during the rest of the zapping session, unless it is determined that a programme transmitted on the discarded channel has changed.