G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 19/073 (2006.01) G06K 19/07 (2006.01)
Patent
CA 2668333
The invention relates to a simple device (1) providing protection against fraudulent or accidental intrusion into at least one contactless communication object (3) having an intelligent circuit (31, 32) containing sensitive information or information providing access to services, whereby the electronic circuit of the protected object remains unchanged. The invention employs means (13) for receiving radio signals (S22) in a frequency range of the order of megahertz to tens of megahertz, the signals received generating the operating energy for activating a circuit (11) that generates an interfering signal to be emitted by emission means (14) belonging to the protection device in the form of interfering radio waves (S21) and interruption means (12) which validate or invalidate the operation of the interfering signal generator of the protection device.
L'invention concerne un dispositif (1) simple de protection contre une intrusion accidentelle ou frauduleuse d'au moins un objet (3) de communication sans contact à circuit (31, 32) intelligent mémorisant des informations sensibles ou des informations donnant accès à des services, le circuit électronique de l'objet protégé restant inchangé, notamment grâce à des moyens (13) de réception de signaux (S22) radio dans une plage de fréquences de l'ordre du mégahertz à quelques dizaines de mégahertz, les signaux radio reçus générant l'énergie de fonctionnement pour activer un circuit (11) générateur d'un signal de brouillage à émettre par des moyens (14) d'émission du dispositif de protection sous la forme d'ondes (S21) radio de brouillage et des moyens (12) d'interruption validant ou invalidant le fonctionnement du générateur du signal de brouillage du dispositif de protection.
Sim & Mcburney
Xiring Sa
LandOfFree
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