An RFID reader controlling device based on a plurality of RFID reader protocols receives control instructions for controlling RFID readers from application devices providing services, and confirms RFID reader protocol types corresponding to control instructions to confirm whether communication channels...http://www.google.de/patents/US8174386?utm_source=gb-gplus-sharePatent US8174386 - RFID reader controlling device, interlocking method for RFID reader, and RFID reader controlling method
