Patent ID: 8591320

Claim:
A system for managing casino chips using RFID (radio frequency identification), the system comprising: a plurality of RFID tags mounted in a plurality of casino chips, respectively; a plurality of reader antennas mounted in a casino table and configured to receive an RF signal from at least one of the plurality of RFID tags; and an RFID reader configured to manage the plurality of casino chips by using the RF signals received by the plurality of reader antennas; wherein each of the plurality of reader antennas includes an AOA (angle of arrival) estimation unit configured to estimate an angle of arrival of an RF signal received; wherein the RFID reader calculates the number of the plurality of casino chips by using the RF signals received by the plurality of reader antennas, and calculates positions of corresponding casino chips by using the angles of arrival estimated by the AOA estimation unit of each of the plurality of reader antennas; and wherein the RFID reader determines the number of valid casino chips of gamers and the number of bet casino chips of the gamers based on the number of the plurality of casino chips and the positions of corresponding casino chips.