Patent ID: 7656630
Filing Date: 2010-02-02
Classification: G06K,G11C,H01L

Abstract:
1. An active protection device for protecting an integrated circuit containing at least one layer of active semiconductor material against an electromagnetic attack, eventually after a mechanical or chemical attack, wherein the active protection device comprises: at least one layer of active semiconductor material, this layer being electrically connected to contact pads for interfacing external electronic circuits at least one field generator able to create a magnetic field next to the circuit to protect, at least one magnetic sensor able to measure the value of the magnetic field, an intrusion checking device, called integrity circuit, connected either to the at least one magnetic sensor and to the one layer of active semiconductor material from the circuit to protect and/or external electronic circuits, said integrity circuit being able to perform an emergency safety process in order to modify the functioning of the circuit to protect and/or to send an electrical signal to inform an attack happens or happened if the measured value of the magnetic field made by the magnetic sensor is out of a predetermined range, said range varies according to the value of the induced magnetic field.