IMPROVEMENTS IN RECEIVERS FOR TELEVISION SIGNALS

摘要

A receiver for receiving television signals is arranged to receive signals i n a plurality of channels. Each signal defines a television programme and at lea st a signal in one of the channels comprises compressed data defining broadcast events in the channels from time to time. The receiver is arranged to produce outpu t signals defining an image of events in the programme schedule for displaying on a television screen. The receiver comprises means for receiving data defining a dictionary representing text portions, means for decoding the programme scheduling data to identify text portions in the dictionary, and means for constructing the image of events from the identified text portions. A signal in each channel comprises a bouquet identity and a sub-bouquet identity for the channel. The receiver comprises means for storing a reference bouquet identity and one or more reference sub - bouquet identities, means for comparing the bouquet identity and sub-bouquet identity for a channel in a received signal with the reference bouquet and s ub- bouquet identities and means for outputting the received television signal f or display of the programme or other services defined thereby depending on the comparison.