An interactive television system includes “connected” receiver units capable of establishing bi-directional connections to remote information stores, such as Web servers, and “disconnected” receiver units unequipped to make such connections. The system supports the use of broadcast triggers that...http://www.google.fr/patents/US7174562?utm_source=gb-gplus-shareBrevet US7174562 - Interactive television triggers having connected content/disconnected content attribute
Interactive television triggers having connected content/disconnected ...
