An apparatus for performing processing on an integrated circuit medium includes a mechanism for performing transfer to and from the integrated circuit medium held therein, and a controller adapted to supply a power supply voltage to the integrated circuit medium after a predetermined condition has been...http://www.google.com/patents/US5910652?utm_source=gb-gplus-sharePatent US5910652 - Portable terminal apparatus for an IC card for supplying a power source voltage in a predetermined timing
