A removable card is adapted for insertion into a corresponding receptacle of a host device, and includes a processor for running at least one application. An agent program is downloadable from the removable card to the host device. The agent program runs on a processor of the host device and controls...http://www.google.com/patents/US7231411?utm_source=gb-gplus-sharePatent US7231411 - Removable card system with downloadable agent for communicating with a digital television receiver or other host device
