| 摘要 |
According to the invention, a server system (1) is connected to a number of remote display means (5-7) for messages for broadcasting, by means of a communication network (8). The audiovisual messages (4) received from the server system (1) are made perceptible for the clients (2, 3). The clients can send coded instruction signals (16) to a first access means (5a-7a), located near a display means (5-7), by means of portable client badges (14, 15), which are transmitted to the server system (1) which then establishes a back-up communication (18) with the client (2), for example by means of the portable telephone thereof. The client can thus simply establish communication and, when the server system (1) has information specifically concerning the above, said information need not be transmitted over the network. |
