Abstract: The invention relates to acquiring information about television program audiences and transmitting it in real time by means of detection apparatuses (10) associated with telephone sets (12) and connected via the switched telephone network (12) and the TRANSPAC network (28) to a central unit for collecting and processing the information transmitted in real time by the apparatuses (10).
Type:
Grant
Filed:
January 17, 1990
Date of Patent:
October 13, 1992
Assignee:
Croquet & Cie
Inventors:
Jean-Louis Croquet, Jean-Pierre Bidon, Jean-Marc Drevon, Pierre-Yves J. Duval