An electronic program guide processing device is connectable to a set-top box configured to receive electronic program guide information. The set-top box includes at least one auxiliary interface that supports communication between the electronic program guide processing device and the set-top box. The...http://www.google.de/patents/US7206497?utm_source=gb-gplus-sharePatent US7206497 - Electronic program guide subsystem for receiving and processing electronic program guide information from a set-top box
