RFID tag-embedded casino chip

• US 8,665,094 B2
• Filed: 07/22/2010
• Issued: 03/04/2014
• Est. Priority Date: 07/23/2009
• Status: Active Grant

• Current Assignee: System Integration Technology Korea Company Limited
• Original Assignee: System Integration Technology Korea Company Limited
• Inventors: Lee, Sung Won
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): OTT, FREDERICK R
• Application Number:
  US12/841,765
• Publication Number:
  US 20110018715A1
• Time in Patent Office: 1,321 Days
• Field of Search: 343/866, 343/803, 343/788, 343/741, 463/47
• US Class Current: 340/572.7
• CPC Class Codes: G06K 19/047 the record carrier being shaped as a coin or a gambling token

Abstract

Disclosed is a Radio Frequency Identification (RFID) tag-embedded casino chip. The RFID tag-embedded casino chip includes an Integrated Circuit (IC) and an antennae connected to the IC. The RFID tag has a frequency which is equal to or greater than 20 MHz and is equal to or less than 25 MHz.

Claims

1. A casino chip comprising:

a Radio Frequency Identification (RFID) tag configured to generate a radio frequency signal;

an antennae connected to the tag and comprising a coil wound in a diameter from 22 mm to 27 mm; and

wherein the radio frequency signal generated by the RFID tag is in a frequency range from 20 MHz to 25 MHz such that one RFID reader can identify each chip even if about 20 of the casino chip are stacked together in a pile and individually generate such signals.

2. The casino chip according to claim 1, wherein a distance of interference between the casino chip pile and other casino chip piles adjacent thereto is 3 cm or less.

3. The casino chip according to claim 1, further comprising:

a plate comprising a cavity and a groove, wherein the RFID tag is positioned in the cavity, the antennae is positioned in the groove;

a protective material formed over the RFID tag and the antennae; and

an injection-molded layer covering a rim portion of the plate.

4. The casino chip according to claim 3, wherein the plate includes one or more holes formed therein.

5. The casino chip according to claim 3, wherein the plate is made of a mixture of nylon and copper.

6. The casino chip according to claim 3, wherein the protective material is formed using an epoxy-based molding solution.

7. The casino chip according to claim 3, further comprising a decal covering a center portion of the plate, wherein the decal comprises a magnetic sheet.

8. The casino chip according to claim 1, wherein the frequency range is from 21 MHz to 24 MHz.