Datenkommunikationssystem und Datenkommunikationsverfahren zur Auswahl bestimmter Benutzer

摘要

A host computer (17) transmits selected questions to output devices such as mobile phones (2-4) and television sets (5-7) of selected subset of users when advertising information related to a particular product or service is provided to the users from the output devices. An Independent claim is also included for data communication method.