Patent ID: 9555320
Date: 2017-01-31
CPC Classifications: A63F,G01S,G06K

Claim:
1. A system comprising: a surface with one or more embedded loop antennas, said one or more embedded loop antennas connected to RFID electronic exciting and sensing circuitry; one or more movable objects designed to be movably placed on said surface, said one or more objects having RFID tag circuitry compatible with said RFID exciting and sensing circuitry; one or more optical emitters mounted in or on said objects, wherein said one or more emitters generate light under the control of command signals received by said one or more objects through said RFID tag circuitry; one or more cameras, said one or more cameras arrayed around said surface to receive the light from said one or more optical emitters; one or more control computers communicating with said exciting and sensing circuitry and said cameras, wherein said one or more control computers execute algorithms to derive the existence, identity, position and orientation of said one or more objects, with respect to said surface.