| 摘要 |
A communication system (10) includes a television (32) for receiving and displaying television signals (64) received over a first communication link (14) and a server (20) located within a computer network. The server (20) is arranged to receive a message and to control onward transmission of the message over a second communication link (42) distinct from the first communication link (14). A set-top box (40), coupled to the television (32), is arranged to receive the message over the second communication link (42). The set-top box (40) includes a decoder (44) for decoding the message and an alert generator for generating on the television an alert (60) indicating the arrival of the message. The alert is independent both of information content in the received television signals (14) and operational control of the television in displaying television services (64). The set top box is therefore operation to target the social habits of particularly the elderly and infirm by providing a more time effective way to interact with relatives who live remotely from other family members, but who have access to conventional television services. |
