A technique for downloading or activating or deactivating selected machine features from a remote central station that is connected to the remote machine by a communication channel. Also, the invention includes identifying features to be downloaded and then activated at a given site and communicating...http://www.google.fr/patents/US5442541?utm_source=gb-gplus-shareBrevet US5442541 - Enabling features over common communication channel
Enabling features over common communication channel
