Gaming chips and table game security system

• US 9,589,220 B2
• Filed: 08/04/2008
• Issued: 03/07/2017
• Est. Priority Date: 08/04/2007
• Status: Active Grant

• Current Assignee: David Nissen
• Original Assignee: David Nissen
• Inventors: Nissen, David
• Primary Examiner(s): McClellan, James S
• Assistant Examiner(s): Weatherford, Syvila
• Application Number:
  US12/221,493
• Publication Number:
  US 20090042642A1
• Time in Patent Office: 3,137 Days
• Field of Search: 273/148, 463/25, 340/572, 501/135
• US Class Current: 1/1
• CPC Class Codes: A63F 2003/00703 Tokens or chips
• CPC Class Codes: G06K 19/067 Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
• CPC Class Codes: G07F 17/3227 Configuring a gaming machine, e.g. downloading personal settings, selecting working parameters
• CPC Class Codes: G07F 17/3251 involving media of variable value, e.g. programmable cards, programmable tokens

Abstract

Gaming chips are provided with embedded radio frequency identification (“RFID”) tags incorporated into a gaming chip for identifying and tracking the gaming chips within a casino, and even upon a gaming table. The gaming chips have a body in the shape of a disc which has a loss tangent of 0.0078 or less, and more preferably of 0.007 or less. For chips operating at 900 MHz, the body has a dielectric constant of 5 or less, and preferably 3-5. For chips operating at 2.45 GHz, the body has a dielectric constant of 5-8. Preferably, the body is made of a blend of plastic, such as PVC, and a dielectric ceramic. The RFID is preferably sandwiched between layers of a high frequency circuit material including top and bottom layers and a center layer have a hole for receiving the RFID. Preferably, the layers of high frequency circuit material have a dielectric constant of 2.5-4 and a loss tangent of 0.002-0.006.

Claims

1. A gaming chip comprising:

an RFID transmitter;

a capsule encapsulating said RFID transmitter, said capsule having a loss tangent of 0.002-0.006 and a dielectric constant of 2.5-4; and

a cylindrical body having a shape and size of a gaming chip encapsulating said capsule and said RFID transmitter, said body having a loss tangent of 0.005 or less and a dielectric constant of 5 or less, and said body comprises a blend of a plastic and a dielectric ceramic selected from the group consisting of aluminum oxide, magnesium titinate, zinc oxide, magnesium titanate (MT), zinc titanate (ZT), barium zirconate (BZ), barium titonate, barium sulphate, barium stannate (BS), barium tantalate, titanium dioxide, and zirconia, and combinations thereof.

2. The gaming chip of claim 1 wherein:

said body is a blend of polyvinylchloride and a dielectric ceramic selected from the group consisting of barium zirconate, barium titonate and barium sulphate, and combinations thereof.

3. The gaming chip of claim 1 wherein said RFID transmitter operates in a frequency band of 915 MHz+/−

13 MHz.

4. The gaming chip of claim 2 wherein said RFID transmitter operates in a frequency band of 915 MHz+/−

13 MHz.

5. A gaming chip comprising:

an RFID transmitter operating in a frequency band of 915 MHz+/−

13 MHz;

a capsule encapsulating said RFID transmitter, such that the RFID transmitter is sandwiched between layers of high frequency circuit material, making up the capsule and said material having a loss tangent of 0.002-0.006 and a dielectric constant of 2.5-4; and

a body having a shape and size of a gaming chip encapsulating said capsule and said RFID transmitter, said body having a loss tangent of 0.005 or less and a dielectric constant of 5 or less, and said body comprises a plastic and a dielectric ceramic selected from the group consisting of aluminum oxide, magnesium titinate, zinc oxide, magnesium titanate (MT), zinc titanate (ZT), barium zirconate (BZ), barium titonate, barium sulphate, barium stannate (BS), barium tantalate, titanium dioxide, and zirconia, and combinations thereof.

6. The gaming chip of claim 5 wherein:

said body is a blend of polyvinylchloride and a dielectric ceramic selected from the group consisting of barium zirconate, barium titonate and barium sulphate, and combinations thereof.