Abstract: A method is provided for encoding a portion of a current image, including: an estimation of motion between the current image portion and a plurality of candidate image portions in order to form motion components, an evaluation of a performance criterion for each candidate image portion, and the selection of a reference image portion using said performance criteria. In the method, for at least one motion component, the motion estimation, the performance criteria evaluation and the reference image portion selection only use information considered to be available at the decoder and no motion information is inserted into an output flow intended for a decoder. A corresponding decoding method is also provided.

Abstract: A method is provided for processing a data packet on reception, where the data packet is transmitted by a first node to a second node over a link of a wireless electronic communications network. The packet includes a header and payload data. The method includes a step of receiving the data packet in two stages, a first stage of receiving the header and a second stage of receiving the payload data. The first stage includes the following steps performed by the second node on receiving a header of the data packet: detecting in the received preamble an authentication preamble for authenticating the link; using the data packet authentication preamble to authenticate the link; and in the event of the authentication having a positive result, deciding to trigger the second stage of receiving the payload data from the data packet.

Abstract: A method is provided for receiving a realtime data stream transmitted at a given speed in the form of packets between a transmitter and a receiver in a telecommunication network. The receiver has a buffer memory for storing the received packets. The method includes the following steps after detection of a loss of packets: requesting retransmission of the lost packets at a speed that is higher than the given speed; receiving retransmitted packets and realtime packets, the retransmitted packets having been transmitted with priority in relation to the realtime packets; and storing the retransmitted packets in the buffer memory.

Abstract: A method of access by at least one second user, to at least one service offered by a first user is provided, which includes transmitting by the first user to the second user at least one invitation comprising an access level defined by the first user to allow said at least one second user to access said at least one service; verifying the content of said at least one invitation, delivering to the second user an access authorization to said at least one service, dependent on the access level; and requesting access to said at least one service by the second user, on the basis of the access authorization.

Abstract: The invention concerns an encoder for an input audio signal (S(z)) comprising a combination module combining the input audio signal with an intermediate counter-reaction signal forming a modified input signal and a quantification module scalable for the rate (91) of said modified input signal, delivering a binary raster of quantification indexes of a predetermined rate.

Abstract: A method for managing computer files in a first device storing the files according to a first file tree, comprising the following steps: for a current level of the first file tree, receiving data representing a level of the same rank of a second data structure representing a second file tree of a second device communicating with the first device; comparing the current level with the level of the same rank of the second file tree, in order to determine the presence in the second file tree, at the rank level of the current level, of an element that is not found in the first file tree at the current level; and, in the event that an element of the second file tree is not found in the first file tree, adding a descriptor of said element to the first file tree at the current level, wherein the descriptor enables access to said element from the first file tree.

Abstract: A method of sending a data signal having a series of symbols to a receiver includes generating multiple OFDM signals, which are transmitted by multiple transmitter entities. A succession of pairs of symbols is also generated. The method may also include generating at least one pair of symbols orthogonal to a current pair of symbols of the succession of pairs of symbols, generating at least one duplicated pair of symbols by duplicating the current pair of symbols, and allocating at least one current pair of symbols, at least one orthogonal pair of symbols, and at least one duplicated pair of symbols to the transmitter entities of the plurality of transmitter entities. Generating at least one orthogonal pair, generating a duplicated pair, and the allocating step may be repeated for all the pairs of symbols of the series of symbols.

Abstract: A packet radio communications system comprises a core network comprising packet data networks, each including network communications elements to communicate packets using an internet protocol transport plane, and a common gateway support node. The gateway support node routes packets via communications bearers established through packet data networks using network communications elements. The system includes radio access networks, to provide radio access bearers, for communicating packets between mobile user equipment. A packet service control subsystem function comprises an access network part and a non access network part. The access network part controls communication of packets via radio access bearers and the non-access network part controls communication of packets via communications bearers.

Abstract: A method of routing a data packet in a telecommunications network, said packet comprising a primary destination address and a destination port number. On reception of said packet, the following steps are executed: determining a port mask defining a range of port numbers to which the destination port number belongs; selecting an identifier of a destination piece of equipment of the packet from a plurality of equipment identifiers associated with said destination address on the basis of the port mask; and routing the packet to the destination piece of equipment on the basis of said identifier.

Abstract: A sensor device includes at least one sensor device coupled to a substrate. A solder pad interface includes a plurality of steps, with at least a portion of the steps positioned at different planes, each of a step having a solder pad. A cable with a plurality of cable leads, is configured for each of a cable lead to be coupled to a solder pad.

Abstract: A method for unique authentication of a user including federating an identity of said user for said service provider and an identity of the user for an identity provider, the federating including the steps of generating a user alias for that service provider and sending said identity provider a masked alias deduced from said alias, the identity provider associating said masked alias for that service provider with the identity of the user for the identity provider and sending the user elements for calculation by the user of a signature of a message containing the non-masked alias calculating said signature and sending the service provider said message with said signature, and the service provider verifying said signature, authenticating the user, and associating said alias with the user's identity.

Abstract: The invention relates to a method of probabilistic symmetric encryption of a plaintext message element with the aid of a secret key that can be represented in the form of a matrix. It comprises an operation of encrypting the plaintext message element, with the aid of the matrix parametrized by a random vector, so as to obtain an encrypted message element coupled to the random vector. Furthermore, there is envisaged a step of encoding the plaintext message element as a code word with the aid of an error correcting code having a given correction capacity and a step of adding a noise vector. The error correcting code and the noise vector are adapted so that the Hamming weight of the noise vector is less than or equal to the correction capacity of the correcting code.

Abstract: A secure communications method is provided for use in a telecommunications network, wherein a transaction between an entity A and an entity B of the network comprises: entity A sending an authorization request to an Authorization Server S, in which request the entity A identifies itself and authenticates itself; the entity A declares to the Authorization Server its intention to communicate with a certain entity B; the Authorization Server determines a secret key that it shares with the entity B; the Authorization Server generates a session key and sends it to the entity A; the session key being a one-way function of the secret key and also being a function of an integer (transaction number) allocated to the transaction; the Authorization Server also generates a transaction identifier that is a function depending at least on the transaction number in non-invertible manner.

Abstract: An autonomous system comprises a plurality of routers within a packet transmission network, respective links joining the routers according to a topology of routers. At the level of a first router of the autonomous system which is joined to a second router, for a route exiting the autonomous system through an exit router, a path is determined between the second router and the exit router according to performance criteria. Next, the route is announced to the second router if the first router is situated on the previously determined path.

Abstract: A method is provided for attenuating pre-echoes in a digital audio signal generated from a transform encoding, comprising, upon decoding and for a current frame of said digital audio signal: defining a concatenated signal from at least the reconstructed signal of the current frame, dividing said concatenated signal into subunits of samples having a predetermined length, calculating the time envelope of the concatenated signal, detecting the transition of the time envelope towards a high-energy area, determining the low-energy sub-units preceding a subunit in which a transition has been detected, and an attenuation step in said determined subunits. The attenuation is carried out according to an attenuation factor calculated for each of the determined subunits, based on the time envelope of the concatenated signal. The invention also relates to a device for implementing said method, and to a decoder including such a device.

Abstract: A method for suggesting applications applied by a terminal compatible with its operating system, is disclosed. One aspect of the method includes receiving a link for accessing the downloading of the application and restoring a message suggesting to the user the downloading; The method further includes determining at least one data structure including identifiers; selecting at least one identifier; generating from the identifier a domain name including an indication of the operating system; and sending the domain name to a server capable of providing a corresponding link for accessing the domain name. Lastly, the access link is received in response to said sending step. A system and device for implementing the method are also disclosed.

Abstract: An electronic entity for a mobile terminal including a subscriber identity card and power supply therefor. The electronic entity includes a near-field communication device, an antenna, and a wire-based interface with the mobile terminal to provide the power supply. A voltage converter supplies operating power to the near-field communication device via the wire-based interface which in turn supplies power to the subscriber identity card.

Abstract: A wireless tire pressure sensing device, a method for setting a standard tire pressure thereof and a wireless tire pressure sensing activation device adjust the tire pressure of each tire in a vehicle to a standard tire pressure according to a requirement of the vehicle after the wireless tire pressure sensing device is mounted in each tire, maintain each tire at the standard tire pressure for a preset time period or employ the wireless tire pressure sensing activation device to transmit a setup instruction to the wireless tire pressure sensing device to set a current tire pressure as the standard tire pressure. The wireless tire pressure sensing device can be set up with the standard tire pressure and conveniently modified. As no threshold value of tire pressure needs to be pre-stored, wireless tire pressure sensing devices with different threshold values are not necessarily prepared beforehand, thereby effectively lowering the stocking pressure on inventory management.

Abstract: An anti-interference antenna of a wireless tire pressure receiver has an insulating cable having a main casing and a sub-casing connected side by side with the main casing. The main casing has a power cable longitudinally mounted through the main casing. The sub-casing has an antenna longitudinally mounted through the sub-casing. As the antenna is individually sleeved by the insulating sub-casing, the antenna and the power cables are isolated to prevent from interfering with each other. Besides, the insulating cable further has at least one air channel longitudinally formed through the corresponding cable and mounted with a metal layer on an inner wall of the air channel, around the power cable, around each of power wires in the power cable, or around the power cable and the air channel, and filled with an EMI-shielding matter to further isolate the antenna and the power cables.

Abstract: A modulator and modulation method are provided, which output an OQAM multi-carrier signal. The method implements a step of transforming, from the frequency domain to the time domain, a set of M symbols of real data so as to output M transformed symbols. The complete transformation includes the following sub-steps: applying a partial Fourier transform to the set of M symbols of real data, outputting a first subset of C transformed symbols, where C is strictly less than M; and obtaining, from the first subset, a second subset of (M-C) transformed symbols that is complementary to the first subset.