System for the carrying out of interactive services between a central unit and a plurality of users

摘要

Interactive system for the exchanging of data between a central unit (1) and a plurality of user stations (3) and vice versa, typically for the realization of banking services using a public switched telephone network (POTS).;One part of the data which are emitted by the central unit (1) is transmitted in a coded way through circular diffusion to all users (3), preferably broadcasted on a specific TV channel.;The user connected to the service has access to the information through a SET TOP (30) applied to the home TV set (33) to get information of the general type (promotional information, information concerning market trends, etc.) without payment.;The acquisition of information having a more rigourously private character (current account balance, stock purchase and selling, etc.) is carried out by means of the telephone line (POTS).