Patent ID: 7656297

Claim:
An RFID system, comprising: a plurality of antennas arranged in a single orbital plane for reading data from an RFID tag; an antenna configuration storage unit for prestoring the position of each of the plurality of antennas; a position detection unit for detecting the position of the RFID tag; and an antenna control unit for selecting one or more of the antennas that read the RFID tag, based on the position of the RFID tag detected by the position detection unit and the position of each of the plurality of antennas stored in the antenna configuration storage unit, and for preferentially activating the selected one or more of the antennas, wherein, the antenna configuration storage unit also prestores an inclination angle of each of the plurality of antennas; the position detection unit also detects an inclination angle of the RFID tag; and the antenna control unit selects one or more of the antennas that read the RFID tag, based on the position and inclination angle of the RFID tag detected by the position detection unit and on the position and inclination angle of each of the plurality of antennas stored in the antenna configuration storage unit, and preferentially activates the selected one or more of the antennas.