Abstract:
A message delivery system comprising a source of information (10, 12, 14) and a television transmitter (16) for delivering information services to a user having a display apparatus (20, 22, 24), such as a teletext television receiver (20), wherein an encrypted message including commands is transmitted as a SMS message in a pre-assigned teletext page. An enabled television receiver includes a client (22) for parsing the commands in the SMS message and uses the commands for conditioning the receiver as required in order to display the messages in a format similar to text signals.