Abstract: The method of the invention comprises: an identification step (E30-E50) of identifying the user of the mobile terminal; a generation step, triggered if identification is successful, of a secure element of the terminal generating (E70) at least one identification value for the terminal by using a first secret key shared between the secure element and a token service provider device; a sending step (E100) of sending a request to the token service provider device to obtain at least one security token, the request including said at least one identification value for the terminal; and a reception step (F90) of receiving from the token service provider device said at least one security token in encrypted form, each security token being associated with a random number generated by the token service provider device and being encrypted by means of an encryption key generated for that token from the random number and from a second secret key shared between the token service provider device and the secure element of th

Abstract: A device for repeating a Wi-Fi signal transmitted by an access point and a system for extending the coverage of the Wi-Fi access point. The device for repeating the Wi-Fi signal is configured to: receive, via a wired connection connected to a device for extending a Wi-Fi access point, a digital signal resulting from the analogue-digital conversion of an analogue signal from a power division of a signal intended to be transmitted by the Wi-Fi access point around a predetermined carrier frequency so as to deliver a first Wi-Fi signal; convert the digital signal received via the wired connection into an analogue signal and transmit the analogue signal around the predetermined carrier frequency, so as to deliver a second Wi-Fi signal substantially identical to the first Wi-Fi signal.

Abstract: A method for receiving a signal during an intrabody communication via a user carrying a terminal. The method is performed by the terminal and includes: receiving a signal from a communication device, indicating that the user moved closer to the device between two instants; detecting, in the signal received, a first radio frame generated between the two instants, the first frame being at the same frequency as that of the signal received; detecting, in the signal received, a second radio frame generated between the two instants, the second frame being at a different frequency to that of the signal received; comparing the first frame to the second frame; and validating a transaction based on the presence or absence of information common to the first and second compared frames.

Abstract: The disclosed technology relates to a method for receiving a near-field radio wave, the wave being received using electromagnetic-wave conduction capacities of the body of a user who is able to make a validation gesture that modifies characteristics of the radio wave. The method includes detecting a first modification of a characteristic of the radio wave, the first modification being resultant from a start of the gesture, and detecting a second modification of a characteristic of the radio wave, the second modification being resultant from an end of the gesture, where the acquisition of a right for the user is dependent on the first modification and the second modification.

Abstract: A method for setting up a communication intended for at least one terminal of at least one second user via analysis of eye movements of a first user. The method is implemented by a device for setting up a communication via analysis of the eye movements of the first user. The device possesses at least one camera, and at least one region of interest is associated, via an identification datum, with the at least one terminal of the at least one second user. The method includes: capturing eye movements with the camera; analysing the captured eye movements; evaluating a duration for which the analysis of the eye movements indicates that a gaze of the user remains directed towards the region of interest; and, when the evaluation indicates that this duration is longer than a threshold, transmitting at least one first message to the at least one terminal identified via the identification datum.

Abstract: A method and a device for decoding a data stream representative of a multi-view video. Syntax elements are obtained from at least one part of the stream data, and used to reconstruct at least one image of a view of the video. Then, at least one item of metadata in a predetermined form is obtained from at least one obtained syntax element, and provided to an image processing module. Also, a method and a device for processing images configured to read the at least one item of metadata in the predetermined form and use it to generate at least one image of a virtual view from a reconstructed view of the multi-view video.

Abstract: A method and a device for decoding a data stream representative of a multi-view video. Syntax elements are obtained from at least one part of the stream data, and used to reconstruct at least one image of a view of the video. Then, at least one item of metadata in a predetermined form is obtained from at least one obtained syntax element, and provided to an image processing module. Also, a method and a device for processing images configured to read the at least one item of metadata in the predetermined form and use it to generate at least one image of a virtual view from a reconstructed view of the multi-view video.

Abstract: A method for preparing usage data for a relay implemented in a computer network is disclosed. In one aspect, the network comprises at least one source device, one destination device, and at least one relay constituting a circuit to set up a communication between the source device and the destination device. The source device first of all retrieves the identifiers of the relays constituting the circuit and sends a proof of use (PoU) frame addressed to the destination device, each relay of the circuit adding to the PoU frame, at the time of passage, a signature made from a challenge and a key proper to the relay.

Abstract: A method for determining a key for securing communication between a user apparatus and an application server. An authentication server of a mobile communication network and the user apparatus generate a secret master key during an authentication procedure. The user apparatus sends the authentication server a request for a key to communicate with the application server and receives a random variable. The authentication server and the user apparatus calculate the requested key by using a key derivation function applied to at least the random variable, a user identifier and an application server identifier using the master key.

Abstract: An optronic transceiver module capable of implementing an optical bidirectional communication of the point to point type via at least one main optical fibre is disclosed. The optronic transceiver module includes a first optical module for supervising an uplink signal received via the main optical fibre delivering a first supervision result, a first optical module for switching the bidirectional communication via the main optical fibre to a bidirectional communication via a backup optical fibre, and vice versa, the first optical switching module being controlled by the first optical supervision module depending on the first supervision result delivered.

Abstract: A method and a device for decoding a data stream representative of a multi-view video. Syntax elements are obtained from at least one part of the stream data, and used to reconstruct at least one image of a view of the video. Then, at least one item of metadata in a predetermined form is obtained from at least one obtained syntax element, and provided to an image processing module. Also, a method and a device for processing images configured to read the at least one item of metadata in the predetermined form and use it to generate at least one image of a virtual view from a reconstructed view of the multi-view video.

Abstract: A method which makes it possible to immerse a user in a virtual reality application is described. The method includes controlling the movement of an avatar of a user in a synthetic scene and controlling the movements of a video acquisition system depending on the detected movements of the head of the user. The method also includes playing back content on a screen of a virtual reality helmet of the user, the content being a video stream acquired by the video acquisition system if the position of the eyes of the avatar is in a synthetic object whose volume can be included in a volume in which the video acquisition system is likely to move.

Abstract: A coding method and a decoding method for decoding a coded data stream representative of at least one image that is split into blocks. For at least one current block of the image, an item of information indicating a coding mode of the current block is decoded from the data stream. When the coding mode of the current block corresponds to a first coding mode, the current block is decoded using a first determined quantization step to dequantize, in the transform domain, a prediction residue associated with the current block. When the coding mode of the current block corresponds to a second coding mode, the current block is decoded using a second determined quantization step to dequantize, in the spatial domain, a prediction residue associated with the current block. The first quantization step and the second quantization step are determined according to the same quantization parameter.

Abstract: A method for controlling a base station of a radiocommunications network multiplexing data in time intervals, each having at least one synchronization time portion and at least one user data time portion organized in time-distributed and frequency-distributed blocks of resources. The method includes, for at least certain of the time intervals: dividing the user data time portion into at least two sub-portions, one active time sub-portion, capable of grouping together resource blocks to be sent out, and at least one time sub-portion that contains no resource blocks used, called an inactive time sub-portion; and putting the base station to sleep for at least one part of the duration of the inactive time sub-portion or sub-portions.

Abstract: A communication device associated with a transmitting entity and including: a first transmitting/receiving module capable of receiving, from the transmitting entity, a query formulated in a predetermined computer language or in a predetermined natural language; a translation module, activated if the query is formulated in the predetermined computer language, and configured to translate the query into the predetermined natural language; an extraction module configured to extract from the query formulated in the predetermined natural language at least one keyword representing the query; an identification module configured to identify, using the at least one keyword extracted, a target device supporting the predetermined natural language towards which to transmit the query; and a second transmitting/receiving module configured to transmit the query formulated in the natural language to the target device.

Abstract: A method and a device for assisting the positioning of a device capable of connecting to a Wi-Fi local area network of a domestic gateway of a user. Such a method is implemented by a mobile terminal placed in a domestic environment of the user. The Wi-Fi signal levels emitted by the mobile terminal and received by the domestic gateway originate from the domestic gateway, and at successive time intervals, and an average is calculated during a sliding time window and of a determined duration. This average is compared with a value of at least one determined threshold. A piece of information representative of the area of the domestic environment in which the mobile terminal is located with respect to the domestic gateway, is returned to the user.

Abstract: A virtual reality data-processing device, intended to be worn on the head of a user is disclosed. The device renders, in a field of view of the data-processing device, a virtual interaction interface, at least one part of the virtual interaction interface being rendered superimposed on a tangible device, when the tangible device is located in the field of view of the data-processing device, track at least one body part of the user likely to interact via the virtual interaction interface, detect at least one user interaction on a virtual element of the virtual interaction interface, when the at least one body part of the user is close to or in contact with the tangible device. The development also relates to a system and a method for processing virtual reality data.