Value token with slug having rfid and electromagnetic detection features

Abstract

Value tokens, e.g. gaming chips, are formed with a slug having an RFID microchip embedded or encapsulated inside and an EM coil either embedded or encapsulated inside or wrapped around the periphery of the slug. The slug is formed by injection molding two plastic halves with a spacing therebetween for accepting the RFID microchip. The plastic halves are formed from weighted plastic including fillers such as copper, brass and / or tungsten to add extra weight to the plastic halves. The EM coil is placed on the same radius as the RFID antenna within the gaming chip or at a radius outside the RFID antenna to as to minimize interference between the RFID and EM signals by minimizing the metal in the EM field. For example, the EM coil may be wound within a groove around the outer periphery of the slug.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 822,025, filed May 10, 2013. The entire content of this application is incorporated herein by reference. technical field [0003] The present invention relates to tokens of value. A token of value is a physical object that represents cash or other value and, at least under certain circumstances, a token of value may be accepted as having the cash equivalent or other value represented. An exemplary use of tokens of value is their use in casino games, where as chips, plaques or jetons they form the basis for issuing, tracking and honoring wagers. Tokens of value may also take the form of traditional coins or currencies that are used around the world. In addition, tokens of value may be used, for example, in commerce to represent value in the context of rewards, opportunities, rewards, and the like. In this environment, tokens of value can be e...

AI Technical Summary

Problems solved by technology

However, such designs have a number of problems including, for example, loss of electrical contact due to peeling, RFID microchips in impact situations, such as when two chips are "bumped" against each other or when one gaming chip collides with another gaming chip. Damaged when edge hits, RFID microchip fails due to being scratched by a spike, removal of RFID microchip, etc.

In summary, when such EM foil is placed in the same gaming chip, the sensitivity of the RFID antenna to the metal shield detunes the RFID antenna, rendering the RFID antenna inoperative

Images