CARDS AND METHODS OF READING THE SAME

• US 20170032240A1
• Filed: 10/17/2016
• Published: 02/02/2017
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: Dominic M. Kotab
• Original Assignee: Dominic Kotab
• Inventors: Stewart, Roger Green
• Granted Patent: US 11,126,908 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06K 19/047 the record carrier being shaped as a coin or a gambling token
• CPC Class Codes: G06K 19/0702 the arrangement including a battery
• CPC Class Codes: G06K 19/07773 Antenna details antennas for wireless devices, e.g. RFID tags, in general H01Q1/22
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal

Abstract

A card according to one embodiment includes an RFID circuit on or within a substrate and an antenna coupled to the RFID circuit, where the card is configured such that a signal associated with the card is capable of being read by at least one RF reader.

Claims

1. A card, comprising:

an RFID circuit on or within a substrate; and

an antenna coupled to the RFID circuit;

wherein the card is configured such that a signal associated with the card is capable of being read by at least one RF reader.

2. The card of claim 1, wherein the antenna has a sheet resistivity of at least 1 Ω

/sq.

3. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by an RF reader associated with a table.

4. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by an RF reader associated with a chip tray.

5. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by an RF reader integrated in a chip tray.

6. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by an RF reader associated with a cage.

7. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by an RF reader associated with an exit.

8. The card of claim 1, wherein the card is configured such that the signal is associated with a value of the card.

9. The card of claim 7, wherein the card is configured such that the value of the card is capable of being determined by the at least one RF reader.

10. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by the at least one RF reader while the card is in a vicinity of a plurality of other cards.

11. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by the at least one RF reader while the card is in a stack with a plurality of other cards.

12. The card of claim 1, wherein the card is configured such that the signal associated with the card is capable of being read by the at least one RF reader while the card is in a tray with a plurality of other cards.

13. The card of claim 1, wherein the card is configured to:

receive an interrogation signal from the at least one RF reader; and

send at least one response to the at least one RF reader in response to the interrogation signal.

14. The card of claim 13, wherein the at least one RF reader is capable of determining a value of the card from which the response is received.

15. The card of claim 1, wherein the RFID circuit includes a passive RF device.

16. The card of claim 1, wherein the card further comprises a battery coupled to the RFID circuit.

17. An RFID system, comprising:

at least one RF reader; and

a plurality of cards, each of the plurality of cards including;

an RFID circuit on or within a substrate; and

an antenna coupled to the RFID circuit,

wherein the RFID circuit has an input impedance greater than an impedance of the antenna;

wherein each of the plurality of cards are configured such that a signal associated with each of the cards is capable of being read by the at least one RF reader.

18. A card, comprising:

an RFID circuit; and

an antenna coupled to the RFID circuit;

wherein the card is configured such that a signal associated with the card is capable of being read by at least one RF reader,

wherein the card is configured such that the antenna minimally affects electromagnetic RF fields in a vicinity of the antenna.

20. The card of claim 20, wherein the antenna of each card has a sheet resistivity of at least about 1 Ω

/sq.

19. The card of claim 20, wherein a total impedance of each card presented to a RF wave is greater than 1000Ω

.