The server switching controller system of the present invention includes a first server (2) and a second server (3) connected to a common controller (30, 20) installed in a vehicle (50) via communication means (14, 15, 8, 9, 10, and 11) to freely communicate with each other with said first server (2)...http://www.google.ca/patents/US7631056?utm_source=gb-gplus-sharePatent US7631056 - Communication server switching controller
