Abstract: Apparatus for single photon source based on emitters with frequencies distributed in a chosen manner. In one embodiment, the apparatus comprises an opto-electronic component capable or emitting light pulses containing a single photon comprising a resonant optical cavity and a group of photon emitters placed in this optical cavity, a single one of these emitters having an emission frequency equal to approximately the resonant frequency of the cavity characterised in that all emitters have a spectral distribution with a concentration of emitter frequencies at a given frequency, and in that the cavity is made so that its resonant frequency is different from this concentration frequency so that the number of emitters with an emission frequency corresponding to the resonant frequency of the cavity is close to one.

Abstract: A system and method for interfacing unified message processing systems with legacy voice mail, e-mail and facsimile systems, located behind corporate firewalls. The system includes a unified message server a proxy interface and a message protocol convertor. The proxy interface is configured to access the legacy system in response to a request from a unified message server. Messages stored on the legacy system are converted by a protocol convertor to a predetermined format compatible with the unified message server. The converted messages are then transferred to a unified message server which is capable of providing messages from different messaging system, such as voice mail, e-mail and facsimile to users in a predetermined format. The invention permits enterprise wide communication systems to provide unified messaging without abandoning pre-existing legacy messaging system.

Abstract: An apparatus for detecting the signals of transmission diversity based on space-time coding is disclosed. The apparatus and method for detecting signals of space-time coding performs linear interpolation and linear filtering to calculate the channel estimate of each transmission symbol from the channel estimate of each slot, thus providing the correct channel estimate even in a channel with considerable fluctuation. Further, the output control with estimation of SIR only passes a proper output of the demodulating and detecting circuit to improve the signal to noise ratio, maintaining enough communication quality even in a bad communication environment.

Abstract: The invention provides a method of photoinducing a Bragg grating in an optical fiber (300) or a waveguide, in which a selected zone of the fiber (300) or waveguide is subjected to a step of being exposed with a source beam (120) using a mirror (200) in such a manner as to fold a portion (122) of the source beam (120) as reflected by the mirror (200) onto a portion (224) of the source beam that is not reflected by the mirror, thereby obtaining a diffraction grating in the fiber (300) or waveguide, the method being characterized in that an additional exposure step is performed on said portion of the fiber (300) or waveguide, and in that relative displacement is imparted between the two exposure steps to elements selected from the beam (120), the fiber (300) or waveguide, and the mirror (200) in such a manner as to cause a same portion of the beam (120) used for photoinduction in both exposure steps to be reflected by the mirror (200) in one of the steps and not reflected by the mirror (200) in the other step.

Abstract: The invention relates in particular to an optical regeneration device for a signal carrying an item of information encoded by phase modulation of that signal, that signal being transmitted over an optical network and comprising a temporal succession of optical pulses. The device comprises an optical pulse nonlinear phase shift module, a linear pulse broadening module a linear pulse broadening module, and a module for the linear compensation of the broadening undergone by the pulses in the linear broadening module.

Abstract: A line switching system of a dynamic band variation unit (10) having a function of connecting a dynamic data terminal device (30A) to an opposing data terminal device (30B) through a number of trunk lines such as a dedicated line (21) or ISDN lines (22-24), wherein the quantity of data to be sent out to a trunk line is varied after the quantity of data to be stored to the dynamic band variation unit is adjusted by varying the communication speed of the data transmitted from the dynamic data terminal unit, when varying the data communication quantity of the data terminal device by increasing or decreasing the number of trunk lines.

Abstract: A method is provided for use in communication between a first and second telephony users wherein both users are located behind a NAT/FW server. The method comprises determining that both these telephony users are located behind one common NAT/FW server in order to allow establishing a direct communication session between the two of them, thereby eliminating the need of being connected to a remote agent for the duration of the whole session.

Abstract: Method and device for automatic configuration of an access router 2, compatible with the DHCP protocol, for controlling resources for a client terminal 1, as a function of a profile associated with the terminal client line and an ID identifier of the terminal client line, in a computer network, starting from the configuration phase of the terminal by a DHCP 3 server in the network; the router routing the DHCP traffic of the terminal with the server. The ID identifier, inserted 5 in the DHCPREQUEST message 4 broadcast by the terminal, is used 9 to query 10 a profiles server 11 that transmits 12 the corresponding profile in response; Extraction 14 of the parameters of the transmitted profile 13 configures 15 the router so that it can be able to process terminal flows.

Abstract: The invention lies within the field of wireless communications systems with several transmitting antennas, corresponding to MIMO (Multiple Input Multiple Output) systems or to MISO (Multiple Input Single Output) systems. According to the invention, the symbols to be transmitted are pre-encoded with a particular linear pre-encoding matrix then coded according to space-time block coding so as to benefit to the full from temporal and spatial diversities allowing at reception for particularly easy and efficient linear decoding.

Abstract: A packet transmission method, in which first packets are sent by source stations (5, 6, 7) to target stations (8, 9), the source and target stations being connected via a packet mode data network (1), in which first packets (P1, P2, P3), chosen according to at least the size and the target station of each first packet from a set of first packets sent by source stations, are aggregated to form respective second packets (Pu) of the same protocol level as the first packets; when a second packet satisfies a determined transmission criterion, the second packet is sent to an address determined as a function of the target stations intended to receive first packets aggregated in the said second packet.

Abstract: A method of and module for masking application processing applied to a request for access to a server by a client workstation connected via successive proxy servers. The application of a first proxy server, is executed, the address of the client workstation is inserted into a specific data field of the access request message header, without calling for any IP spoofing function and the access request message for execution of successive application processing is sent to successive proxy servers.

Abstract: A method of securing requests for access to services from a terminal (1) able to communicate with a plurality of service operators (A; B) delivering respective services, comprising the following steps: furnishing the terminal with at least one software component (6; 7) provided by an operator delivering at least one service with a particular access condition, upon a request for access to the said service from the terminal by way of a communications network, executing the software component provided by the operator locally in the terminal, the execution of the software component comprising at least the presentation to a user of the terminal of an indication defined by the operator in the component in relation to the particular access condition of the service.

Abstract: A video coding apparatus, method, and computer program product for removing transform coding noise especially in flat areas of a frame, which appears as remaining parts of moving objects in a video picture. Transform coding noise is removed by forcing a macroblock to be intra coded instead of inter coded when certain criteria are fulfilled so as to reveal whether the macroblock contain annoying quantization generated noise and to detect if an equalization is necessary.

Abstract: A method for inserting and detecting a watermark based on a stochastic model is disclosed. The apparatus for inserting a watermark based on a stochastic model, includes: a generator for generating a spread spectrum signal by using a user key from outside; an estimator for estimating an autocorrelation matrix of an original signal from outside as an object for inserting a watermark; an eigenvalue decomposer for decomposing the autocorrelation matrix to an eigenvector matrix and an eigenvalue matrix; a watermark shaper for shaping a watermark from the spread spectrum signal in reference to both the eigenvector matrix and the eigenvalue matrix; and an adder for adding the watermark to the original signal.

Abstract: A method is provide for using a communication device which comprises a plurality of ports adapted to receive a plurality of communication sessions. The method comprises the steps of identifying subscribers having at least a first common characteristic, retrieving real time updated information applicable to the identified subscribers and broadcasting to these subscribers a message based on the real time updated information retrieved via designated ports connected to the communication device, wherein the number of designated ports is less than the number of ports utilized by these subscribers.

Abstract: A system and method for connecting one or more systems to a user for automatic determination of which system the user may use to participate in a call. A predefined list of videoconferencing systems and/or locations for each user is predefined and arranged in a prioritized order. When scheduling a meeting and/or a videoconference, the predefined user lists are taken into account when selecting end-points and other resources involved in the meeting/conference. The selection process may be controlled by predefined rules also taking various system availability, network resources and the routes required for connecting the other systems in the conference into account. The present invention also introduces presence applications to facilitate scheduling and set up of ad hoc meetings/conferences.

Abstract: The method of recording audiovisual contents broadcast according to a schedule includes: a step of selecting from an access terminal an audiovisual content to be recorded associated with a broadcast date and time, and a step of the access terminal receiving a record file of the selected audiovisual content, said file containing information identifying the audiovisual content and the scheduled date and time for broadcasting it. It further comprises: a preliminary step of the access terminal selecting a set of contents having a common topic, said set being offered by an audiovisual content presentation server, which then selects the audiovisual content automatically on the basis of the set selected; and a step of updating the record file, especially in the event of modification of the audiovisual content selected by the presentation server.

Abstract: An electric field emitted by an electronic equipment is measured by producing at least one radiation measurement in the radiating field of the equipment. Several sets of simultaneous near-field measurements, within a measuring surface located at a short distance from the equipment, are performed. The sets of performed measurements are processed by estimating the statistical properties of the radiated field at any point outside the measuring surface.

Abstract: This invention relates to a system and to a method for submitting a message (MSG) to a telecommunications terminal (2) of an addressee, which message has been deposited by a caller in an inbox (12) of a messaging server (1) of the addressee. The method comprises the following successive steps: a step of sending a request to search for an illustration (8) from the voice messaging server (1) to a directory device (3), a step of sending said illustration (8) from the directory device (3) to the messaging server (1), a step of sending the deposited message (MSG) and said illustration (8) from the messaging server (1) to a multimedia messaging server centre (MMSC), and a step of sending a multimedia message (MMS) containing at least said deposited message (MSG) and said illustration (8) from the multimedia messaging server centre (MMSC) to the terminal (2).