Abstract: Embodiments are concerned with method and a system for event processing in a communications network, and are suited to coordinating the provision of services in response to service initiation triggers. Embodiments are particularly applicable for use in controlling operation of service nodes, each of which is arranged to provide a particular service in a mobile network, or a fixed network or a combination of the two.

Abstract: The invention concerns a method for spectral enhancement and a device therefor. The inventive method is a method for enhancing spectral content of a signal having an incomplete spectrum including a first spectral band, the method including the following steps: at least transposing the spectral content of the first band into a second spectral band not included in the spectrum to generate a transposed spectrum signal, with spectrum limited to the second spectral band; transforming the spectrum of the transposed spectrum signal to obtain an enhancing signal; combining the incomplete spectrum signal and the enhancing signal to produce a spectrum enhanced signal. The invention is characterized in that the spectral content is subjected to a whitening step.

Abstract: A method of transferring communication between communication channels of differing bandwidth comprises establishing data communications on a first channel having a first bandwidth, establishing data communications on a second channel in response to a trigger indicating changes in the data to be communicated, wherein the second channel has a bandwidth providing resources different from the first bandwidth of the first channel. The method further comprises responding to the discontinuation of an in-progress mixed-media call that transmits data using a first and second media by initiating a second call not supporting the second media.

Abstract: This invention concerns a method for processing computer system input data including at least one detection step for a specific word INSTR present among said data. In the method according to the invention, the specific word to be detected represents an instruction necessary for the execution of a program present among said data. Because it focuses detection on the means necessary for the execution of an attack program that thus reveal the presence of said program, the invention can be used to simply and effectively detect different types of attacks.

Abstract: A method of comparison between pieces of information characterizing reference values and pieces of information characterizing current values of sound-reproducing systems of a system of (n) microphones mi and (p) speakers hpj for the control of said sound-reproducing systems characterized in that: A: for each speaker hpj, at least one sound signal S is sent on the speaker hpj, for each microphone mi, a piece of information hpjmi is retrieved, this piece of information characterizing the sound-reproducing system comprising the speaker hpj and the microphone mi, B: a reference matrix Qr is saved, this reference matrix being constituted by all the pieces of reference information hpjmi obtained following the sending of the sound signal S, C: as soon as a comparison is to be made, the step A is run with a sound signal S? to obtain current information on a matrix Q, D: the matrices Q and Qr are compared.

Abstract: Method of cryptography in a smart card comprising a central processing unit, said method implementing precomputation operations, characterized in that said precomputation operations are performed by the smart card and in that the precomputation operations are carried out at a session during the waiting periods of the inputs/outputs of the central processing unit.

Abstract: The invention concerns a method of inserting a watermark in an image comprising at least three components, the method comprises the steps of decomposing at least one component of the image into detail sub-bands in various directions and comprising coefficients, each coefficient being characterized by its position in the detail sub-band to which it belongs and its amplitude, of determining, for each position, information representing local amplitude variations from the amplitudes of the coefficients at this position in the various detail sub-bands and the coefficients close to this position in the various detail sub-bands, of determining a watermarking strength at each position from the information representing determined local amplitude variations in the said position and inserting a watermark composed of a plurality of binary information in the image, inserting each item of binary information at a position on the image according to the watermarking strength determined for a position corresponding to the posi

Abstract: An all-optical converter (10) for converting an intensity-modulated optical signal into an optical signal modulated to the DPSK format, includes a first input (152a) for a first intensity-modulated optical signal (12), a differential encoding module (100) adapted to perform a differential encoding between the first signal (12) and a second optical signal synchronous with the first signal (12), a device adapted to modulate (200) the phase of an optical signal (16) according to the differential encoding performed by the differential encoding module (100), and an output (162c) of the device adapted to modulate (200) delivering an optical signal modulated to the DPSK format (14).

Abstract: The invention concerns a method and device for processing echo between at least two communication devices in order to attenuate, in a picked-up signal of a communication device comprising at least one microphone, the components of the signal broadcasted by at least one other communication device comprising at least one loudspeaker, characterised in that the echo processing device comprises: means for receiving, by means of a connection with at least one other device, information representing at least one broadcasted signal of at least one other communication device, means for modifying the picked-up signal of the communication device according to information representing the broadcasted signal and information representing the coupling separating a loudspeaker of the said at least one other communication device from the microphone of the communication device.

Abstract: Data associated with transmitted information over a communication network are transmitted. The data are divided into data groups. An information item representative of the importance of the data of the data group is associated with each data group. A transmission cycle for the data groups is determined. Each data group is inserted into the determined transmission cycle a number of times depending on the importance of the data of the data group.

Abstract: The present invention relates to a receiving system for a multi-sensor antenna and comprising: at least one set of channel filters (310j, 710k, 1 . . . N) filtering the signals Xi(t,f) received by the different antenna sensors, where these signals may include a desired signal (Si(t,f)); a summer (350, 720) summing the filtered signals [Vi(t,f)], where i=1 . . . N, by means of the channel filters and emitting an antenna output signal Y(t,f), at least one calculating module (320, 720) receiving either the sensor signals and aligning them in phase or the signals filtered by the channel filters, said module estimating the transfer function (W(t,f), W k(t,f)) of an optimum filter in a manner to minimize the square difference between the antenna output signals filtered by said filter and the desired signal characterized in that if furthermore comprises at least one statistical analysis module (330, 730) operating on the frequency values of the transfer function.

Abstract: The invention concerns an all-optical converter ( 10 ) for converting an intensity-modulated optical signal into an optical signal modulated to the DPSK format, characterised in that it comprises: a first input ( 152a ) for a first intensity-modulated optical signal ( 12 ); a differential encoding module ( 100 ) adapted to perform a differential encoding between the first signal ( 12 ) and a second optical signal synchronous with the first signal ( 12 ); a device adapted to modulate ( 200 ) adapted to modulate the phase of an optical signal ( 16 ) according to the differential encoding performed by the differential encoding module ( 100 ); an output ( 162c ) of the device adapted to modulate ( 200 ) delivering an optical signal modulated to the DPSK format ( 14 ).

Abstract: The invention concerns a local network for the transfer of information among several communication devices connected to an alternating current electrical power distribution system with a pre-determined frequency, the information conveyed in the local network being transferred in the form of electrical signals forming waves in the electrical power distribution system in a frequency band higher than the pre-determined frequency, the electrical power distribution system being connected to an electrical power supply system, characterized in that the local network comprises at least one wave reflection device forming reflected waves in the power distribution system and attenuating the waves of the power distribution network in the electrical power supply system. The invention also concerns the reflection device.

Abstract: This invention concerns a telecommunication system SYST including: a mobile transmitter/receiver ERM, a number of access points PA1i and PA2j, each capable of communicating with the mobile transmitter/receiver ERM situated in a coverage area ZA1i or ZA2j of the access point considered, and a communication network NW1 authorizing communications between said access points. The system according to the invention includes at least one mobility manager GM capable of determining, based on operating conditions of the access points, with which access point the mobile transmitter/receiver ERM should establish a communication. In the system according to the invention, a change in access point may not be carried out at the sole initiative of a mobile transmitter/receiver ERM, but is, on the contrary, carried out after analysis of an environment specific to said mobile transmitter/receiver ERM by the mobility manager GM.

Abstract: An instant messaging service enables plural users in an address book to form a discussion group within which the users exchange messages synchronously. A presence management method enables a user to appear to be present or not on the instant messaging service from the point of view of at least one of the members of his address book. The management method includes user selecting respective presence states for one or more members or groups of members of the address book, transmitting the respective presence states to the members or groups of members and modifying the presence state relating to the user for each of the members or groups of members according to the received respective presence states.

Abstract: A telecommunication system has at least one conference bridge for transmitting at least one flow of stimuli to several active users. A data server receives data coming from at least one terminal. A compilation device (1) collects the flow of stimuli on the one hand and synchronisation information relating to data received by the data server on the other hand, and (2) generates signals representing the stimuli and the synchronization information for transmission of signals to at least one other terminal.

Abstract: A synchronous frame is formed by inserting data in virtual containers that are inserted in the fame. The containers are concatenated with each other. Each concatenated container indicates the total number of containers, and the order number of the particular container. A receiver responsive to the frame delivers to its output only the containers with the indications in the order of the order numbers.

Abstract: The balance or a portion of the balance associated with a prepaid card with or without a microcircuit is paid into a balance portion collection server, as a donations to charities, after setting up a call between a terminal and the server and after confirmation of the payment by the user at the terminal to increment a counter with the balance or balance portion. In another embodiment, balance portions are paid cyclically into the server or into a connection unit as and when a telephone call runs.

Abstract: A terminal in a communication system includes emitting and receiving transducers and an echo processor having an adaptive echo canceler that processes a residual echo output from the adaptive echo canceler.

Abstract: A server for controlling telecommunications and/or computer equipment having a digital transmission link to the equipment. The server can receive and interpret short messages (SMS or UUS messages) including commands and send the commands to the telecommunications or computer equipment through the digital transmission link.