Centre National De La Recherche Scientifique

Etat Francais Represente Par Le Delegue General Pour L'armement

France Brevets

Institut National Des Sciences Appliquees De Rennes

Erwan Nogues

Sébastien Mallier

Thierry Dandois

Daniel Bigot

Daniel Menard

Maxime Pelcat

Erwan Raffin

Frédéric Garreau

Mathieu Chacun

Simon Lebreton

Disclosed is a method for detecting at least one compromised computer device in an information system, the method including: performing a frequency scan involving dividing the electromagnetic spectrum into frequency sub-bands; performing, in each frequency sub-band, a time envelope demodulation in order to recover signals transmitted by at least one computer device of the information system; converting each demodulated signal in the frequency domain; constructing a frequency spectrum on the basis of the demodulated signals in all the frequency sub-bands; finding, in each frequency sub-band of the frequency spectrum, at least one amplitude line having energy that is greater than a first predefined energy threshold; and, if at least one line having energy that is greater than the first predefined energy threshold is found, indicating the presence of at least one compromised computer device transmitting compromising spurious signals.

Method for detecting at least one compromised computer device in an information system

Decoder, system and method for decoding multimedia data at the level of a terminal by managing the energy available for decoding comprising a decoder of the multimedia data, characterized in that said decoder comprises at least one low-consumption decoding chain comprising an activation module suitable for activating a first low-consumption decoding chain or loop filter and a low-consumption interpolation chain as a function of at least one parameter representative of constraints of user energy and/or of the mobile terminal and of one or more metadata Massociated with a decoding complexity and/or with a decoding energy.

Decoder, method and system for decoding multimedia streams

A device has a standard female audio connector that is capable of receiving four-pole male connectors and three-pole male connectors and implements: means (CTRL, VCC, S) for selectively transmitting a DC power supply signal via a first pin (DP) of said connector; means (CTRL, ANC) for selectively activating a cancellation mechanism for ambient noise from digital audio signals that are intended to be received, via the first pin, in a manner superimposed on said DC power supply signal; means (CTRL, MIF) for selectively transmitting via a second pin of said connector, in a manner superimposed on said audio signals, a timing clock that is intended for digital microphones (DML, DMR) or other sensors; means (CTRL) for configuring itself vis-&#xe0;-vis the DC power supply signal, the ambient noise cancellation mechanism and the timing clock, according to a determined type of listening device that is effectively connected via said connector.

Self-configuration of a device implementing an ambient noise cancellation mechanism

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Rennes, France

Erwan Nogues