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: 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 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: 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: 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: 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 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 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 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.

Abstract: A method for sending data packets encapsulated according to the MPLS protocol, and a sending device of an IP/MPLS network configured to implement the method. The sending method includes obtaining an identifier representative of a group of data packets having at least one data packet, inserting the identifier into at least one part of a data field associated with an entropy label of the MPLS protocol of the at least one data packet, and sending the at least one data packet in the IP/MPLS network.

Abstract: A method for constructing behavioral software signatures. The method includes: embedding execution traces of a set of software in a vector space, an execution trace of a software agent including at least one event and being representative of the execution of the software, the embedding representing an event of the execution trace by a vector encoding a context for occurrence of the event; partitioning the vectors associated with the software of the set to generate a data group representative of a behavior, a behavioral label being associated with the data group; associating a behavioral label with a vector, which is representative of the data group to which the vector belongs, and associating a trace of behavioral labels with a trace of vectors, the trace of labels being representative of execution of a software agent, and extracting in the trace of labels at least one behavioral signature associated with the software.

Abstract: A method for preserving a transmission rate of second data transmitted by a first terminal destined for a second terminal attached to at least one access device in a communications network. A communications network node capable of routing the second data identifies an inability of the at least one access device to send first data received from the first terminal to the second terminal, processes the first data received from the first terminal during the identified period of inability of the at least one access device, and transmits to the first terminal a notification indicating that the first stored data is not subject to congestion.

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 allocating transmission resources to at least one terminal of a set of D2D terminals for direct communication implemented by a cellular access network having a base station. The method includes, for a transmission interval: calculating, by each transmitter terminal of a D2D pair, of a value of a utility metric indicating an energy efficiency of the D2D communication of the pair; determining a transmission resource index to be used for the relaying of an indicator by each transmitter terminal of a D2D pair by comparing its value of the utility metric with the table of correspondence; relaying an indicator, by each transmitter terminal of pair, via the index resource representing the value of its utility metric; and determining, by the base station an optimum D2D transmitter terminal, of which the resource for relaying the indicator has the minimum order index, for the allocation of resources.

Abstract: The present technology relates to systems and associated methods for measuring properties of particles in a solution. In one or more embodiments, a particle measurement system is configured to generate a reference signal, communicate the reference signal across a plurality of resistors and overlapping pairs of electrodes that define detection regions for particulates traveling through a microchannel, and measure various properties of the particles based on detecting changes in the communicated reference signal.

Abstract: A method for toggling of a management entity in a telecommunications network is described, in which the network operator has defined at least one given set of at least three management entities. In one aspect, the method includes, for a first management entity of the set, as long as said first management entity is in service, during the registration of at least one client device on the network, the first management entity taking charge of this client device. The client device records the identity of the first management entity, as well as the identity of a second management entity of said set, which is provided to it by the first management entity. The first management entity shares or synchronizes with said second management entity the context data relating to this client device. If the first management entity goes off-service, each second management entity is informed thereof and takes charge of the client devices for which it has shared or synchronized the context data with the first management entity.