WARNING SYSTEM FOR SIGNALING THE PRESENCE OF A RADIO FREQUENCY COMMUNICATION AND MANUFACTURING METHOD

• US 20100273469A1
• Filed: 12/16/2008
• Published: 10/28/2010
• Est. Priority Date: 12/17/2007
• Status: Active Grant

• Current Assignee: Gemalto SA (Thales SA)
• Original Assignee: Gemalto SA (Thales SA)
• Inventors: Buyukkalender, Arek, Seban, Frédérick, Meridiano, Jean-Luc
• Granted Patent: US 8,536,981 B2
• Time in Patent Office: Days
• US Class Current: 455/418
• CPC Class Codes: G06K 19/07309 Means for preventing undesired reading or writing from or onto record carriers
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

The invention relates to a warning device for signaling the presence of a radio frequency communication. The system includes an indicator perceptible to a user and an activation circuit to sense or detect energy originating from the communication and to activate the indicator. The device is distinguished in that the indicator is a vibrator. The invention also relates to a radio frequency communication device, such as a chip card, a passport, an insert, a mobile telephone, having the warning system, and a method of fabrication.

Claims

1. A warning system for signalling the presence of a radio frequency communication, said system comprising an indicator perceptible to a user and activation means able to sense or detect energy originating from said communication and to activate said indicator, wherein the indicator comprises a vibrator.

2. A system according to claim 1, wherein the activation means comprise:

a power supply coil to sense radio frequency energy and supply induced alternating current, and

a matching circuit connected to the coil, wherein the circuit is capable of supplying an alternative low frequency signal to the vibrator.

3. A system according to claim 2, wherein the matching circuit is capable of dividing the frequency of the sensed energy by at least 1000 in order to get a low vibration frequency having a value less than the threshold of 20 Hz.

4. A system according to claim 2, wherein the vibrator comprises a mobile core in a tube and at least one drive coil connected to the matching circuit.

5. A system according to claim 4, wherein the vibrator comprises two flat drive coils placed at two ends of the tube.

6. A communication device comprising radio frequency communication methods, including the warning system according to claim 1.

7. A device according to claim 6, wherein the device comprises a flat base, wherein the vibrator oscillates parallel to the plane of the base.

8. A device according to claim 6, wherein the warning system is structurally independent of the radio frequency communication methods.

9. A device according to claim 6, comprising an antenna connected to an integrated circuit module, wherein the antenna also constitutes the power supply coil of the warning system.

10. A device according to claim 6, constituting a portable telephone communication device comprising an internal vibrator that can be telephonically activated, wherein the internal vibrator also constitutes the vibrator of the warning system.

13. A device according to claim 6, wherein the device comprises a chip card.

14. A device according to claim 6, wherein the device comprises a passport.

15. A device according to claim 6, wherein the device comprises a mobile telephone.

16. A device according to claim 6, wherein the device comprises an insert.

17. A device according to claim 6, wherein the device comprises a communicating box.

18. A device according to claim 7, wherein the flat base comprises a card body.

19. A device according to claim 7, wherein the flat base comprises a substrate of an identity document.

11. A fabrication process of a communication device comprising the following steps:

making at least one power supply coil and at least one drive coil on a base sheet,

fixing an electromagnetic vibrator in a cavity developed in the sheet, and

placing a matching circuit in a matching module in a cavity developed in the sheet so as to connect the matching circuit to the terminals of the power supply coil.

12. A fabrication process of a communication device comprising the following steps:

making at least one power supply coil on one base sheet,

placing a tubular electromagnetic vibrator comprising a concentric drive coil and connection pads in a cavity developed in the sheet, and

placing a matching circuit in a matching module in a cavity developed in the sheet so as to connect the matching circuit to the terminals of the power supply coil.