| Patent Number |
Title Of Patent |
Date Issued |
| 5740232 |
Smart card based system for telephone-securized transactions |
April 14, 1998 |
| A Smart Card Based System for telephone-securized transactions. The system includes a telephone terminal (10) connected to a server (30) and a package or unit (40) incorporating a keypad (42), a smart card (48) and sound signal transmission device. The transmission of the information of |
| 5740202 |
Method and apparatus for digitally evaluating the phase of a modulated carrier |
April 14, 1998 |
| The method makes it possible digitally to evaluate the phase of any carrier that has been subjected to rPSK modulation subsequent to clock recovery, sampling, and digitizing the in-phase and quadrature components of the samples, by processing that is performed in polar coordinates and th |
| 5739510 |
Card reader terminal and method for the multi-applicative operation of such a terminal |
April 14, 1998 |
| The invention relates to a method for them multi-applicative operation of a card reader terminal (10), in which there is a link (11) with at least one electronic card (12), which may or may not have a memory and which is dedicated to the performance of an application. The card performs |
| 5734715 |
Process and device for adaptive identification and adaptive echo canceller relating thereto |
March 31, 1998 |
| To estimate the response of a system to an input signal, on the one hand the input signal and on the other hand an observation signal, a component of which is said response to the input signal, are received, an error signal is determined by subtracting from the observation signal the inp |
| 5734333 |
Device with spectral purity for the remote exchange of information between a portable object and |
March 31, 1998 |
| A system for remote information exchange between a portable object and a station and in which in order to minimize an undesirable profitless cluttering in the radio frequency environment of the system, the phase variation between the first and second alternating voltages (VEX and VEY), |
| 5726785 |
Optical add-drop multiplexer using optical circulators and photoinduced Bragg gratings |
March 10, 1998 |
| This multiplexer adds to a group of optical signals, whose wavelengths belong to a group of wavelengths (.lambda.1 . . . .lambda.N) and drop from said group of signals at least one optical signal having a given wavelength, chosen from within the wavelength group and comprises at least |
| 5724354 |
Method for the insertion of cells into an ATM type flow and implementation device |
March 3, 1998 |
| A method for the insertion of a flow of applications-specific cells or maintenance cells into a flow of incident cells according to the ATM standard or a similar standard. To this end, a message characterizing each received cell is formed in real time. This message gives, among others, a |
| 5724099 |
Process for controlling the outflow rate of a coder of digital data representative of sequences |
March 3, 1998 |
| A process for controlling the output flow rate of a coder of digital data representative of sequences of images, the coding effected by the coder including a quantization stage of quantization parameter Q, the sequences of images being made up of successive groups of images. The process |
| 5721637 |
Wavelength converter apparatus |
February 24, 1998 |
| The invention relates to a wavelength conversion apparatus for transmitting data carried by an incident pump wave beam of wavelength .lambda. to a probe wave of wavelength .lambda..sub.s. The apparatus has two semiconductor optical amplifiers and means for splitting the incident pump |
| 5720035 |
System for control of access to computer machines which are connected in a private network |
February 17, 1998 |
| A system for control of access by messages to computer machines which are connected in a host private network by at least one private terminal that comprises an access control module interconnected at each input-output point of the host private network, each module allowing the selective |
| 5717825 |
Algebraic code-excited linear prediction speech coding method |
February 10, 1998 |
| The method uses the technique of CELP coding with algebraic codebook. The search for the CELP excitation includes a calculation of certain components of the covariance matrix U=H.sup.T .multidot.H where H denotes a lower triangular Toeplitz matrix formed on the basis of the impulse r |
| 5717768 |
Process for reducing the pre-echoes or post-echoes affecting audio recordings |
February 10, 1998 |
| For various values of an integer p, short-term discrete Fourier transforms X(p,k) and X.sub..tau. (p,k) of the audio signal shifted by pR samples and of the audio signal shifted by pR+.tau. samples are respectively calculated, R denoting a predetermined integer and .tau. denoting a time |
| 5712717 |
High isolation, optical add-drop multiplexer |
January 27, 1998 |
| According to the invention, a first band-pass multidielectric filter (F1) receives optical signals, transmits at least one of them and reflects the untransmitted signals. An adding means (F2) inserts among them at least one other optical signal. A photoinduced Bragg grating filter (R) re |
| 5708757 |
Method of determining parameters of a pitch synthesis filter in a speech coder, and speech coder |
January 13, 1998 |
| A long-term analysis of an input speech signal is carried out to adaptively select parameters of a pitch synthesis filter in respective variation ranges. Successively selected values of said parameters are processed to estimate maximum magnitudes of an error component of the output signa |
| 5707564 |
Method for the manufacture of wires stretched according to a predetermined profile |
January 13, 1998 |
| A method for the controlled stretching of one or more optical fibers according to a desired profile and a device for its implementation. The method includes several steps. In these steps, a speed V.sub.e =dx.sub.e /dt of flow of the fiber entering the heating chamber is laid down, a |
| 5703895 |
Opto-electronic semiconductor device including an integrated mode transformer |
December 30, 1997 |
| A semiconductor opto-electronic device including at least one electronic function component (62), at least one optical function component (60) and a mode transformer associated with the optical function component. At least some layers of semiconductor material constituting the electronic |
| 5701586 |
Cell selection and reselection by mobile station in a multilayer cellular mobile radio network |
December 23, 1997 |
| Cell selection and reselection by mobile station in a cellular mobile radio network with a plurality of layers of cells includes, when the station is in a standby state and after selection of a cell by the station, identification of a layer containing the selected cell, reselection of |
| 5696902 |
System for management of the usage of data consultations in a telecommunication network |
December 9, 1997 |
| A system for management of the usage of consultations in a telecommunication network, in which one consultation is carried out by communication between a remote server center, and a local subscriber terminal, via a telecommunication link of switched type. A usage management module is |
| 5694499 |
Optical crossconnect |
December 2, 1997 |
| An optical crossconnect includes optical elements (D1 . . . DM) for wavelength demultiplexing of optical signals and elements (MT) for optically processing the demultiplexed signals which give each optical signal a specific wavelength and bring to one of the outputs (S1 . . . SM) the |
| 5687193 |
Manchester coder/decoder |
November 11, 1997 |
| The Manchester coder/decoder of the invention includes the following modules. A synchronization signal generation module (11), gives the clocks' start signal. A module (12) for the synchronization and generation of clocks generates the transmission/coding and decoding clocks and a low |
| 5684882 |
System for selective sound capture for reverberant and noisy environment |
November 4, 1997 |
| A system for selective sound capture for hands-free telephony and multimedia workstations of the acoustic antenna type with an aerial formed by a member with a concave cylindrical surface. The system includes a plurality of electro-acoustic transducers which are distributed over and |
| 5684500 |
Multiplexed control active matrix display screen |
November 4, 1997 |
| A multiplex control active matrix display screen including a first transparent substrate supporting an array of electrodes controlled by an array of transistors. Each transistor has two control gates. The second gates are interconnected along an addressing row or column. The rows and |
| 5684385 |
Customized storage, high voltage, photovoltaic power station |
November 4, 1997 |
| The present invention relates to a customized storage, high voltage, photovoltaic power station, having at least one photovoltaic solar module and a customized storage device. |
| 5678220 |
Device for rejection of the image signal of a signal converted to an intermediate frequency |
October 14, 1997 |
| In a device for rejecting the image signal of a signal converted to a predetermined intermediate frequency, a local oscillator supplies a local signal at a frequency chosen according to the frequency of the signal and the intermediate frequency. A first phase-shifter has two passive |
| 5671268 |
Telephone answering machine |
September 23, 1997 |
| A telephone answering machine includes at least two tapes, the first of which records a subscriber's outgoing universal message (OGM) to all callers. A second of the two tapes records incoming messages from callers. A control device detects a tone code defined by, and entered by, a calle |
| 5661806 |
Process of combined authentication of a telecommunication terminal and of a user module |
August 26, 1997 |
| The terminal and the user module are authenticated in a combined manner on the basis of an authentication key calculated on the one hand by the terminal and on the other hand by the network. A session key is firstly calculated by the user module on the basis of a secret user key, of a |
| 5657247 |
Method of playing back a sequence of images, in particular an animated sequence, as received suc |
August 12, 1997 |
| A method and apparatus for playing back a sequence of images from a run of component images successively supplied in digital form by a remote source to a receiver apparatus having the function of playing back the images of the sequence at a given rate, and in which each image constitutes |
| 5652794 |
Device and process for securizing a document and graphic authentification code |
July 29, 1997 |
| The invention relates to a device for securizing a document incorporating a processing module, which calculates and associates with each document page (10), comprising a zone (11) containing the text of the information to be certified, a graphic seal (12) representing it in the form of i |
| 5651076 |
System for determining the bidimensional characteristic function of a continuous optical convers |
July 22, 1997 |
| A light source produces a light beam which is projected through a pattern to form a light beam incident on a surface of a continuous member. The pattern defines two transparent and opaque surfaces delimited by an angle. An opto-electronic device converts luminosity levels of elementary a |
| 5641704 |
Method of isolating active areas of a semiconductor substrate by shallow trenches and narrow tre |
June 24, 1997 |
| The semiconductor device includes in a semiconductor substrate (1) at least one predetermined region (6) of the substrate intended subsequently to form an active area, uncovered on its upper surface and situated between lateral trenches (7) containing an insulative material including a l |
| 5640366 |
Sequential -access asynchronous memory device and corresponding process for storage and reading |
June 17, 1997 |
| The sequential-access asynchronous memory device comprises an asynchronous double-port random access memory (MVDP), a write address generator (CE) for delivering to the input port of the memory, in response to write enable signals (ATE), successive write address information (ADE) res |
| 5638377 |
Method of forwarding data packets in a multi-site network, a corresponding communications networ |
June 10, 1997 |
| The header of each packet contains a virtual channel identifier. The virtual path identifier is a packet distribution agent enabling a packet to be distributed when the packet is travelling over a public network, and the virtual path identifier is a packet-routing agent enabling the pack |
| 5635576 |
Crosslinkable material which may be used in opto-electronics, process for producing this materia |
June 3, 1997 |
| The invention relates to a crosslinkable material containing a polymer onto which chromophores are laterally grafted, characterized in that each chromophore is within a polymer unit which corresponds to the following formula (I): ##STR1## in which: X represents a part of the poly |
| 5630156 |
Process for parallel operation of several computation units, especially in image processing, and |
May 13, 1997 |
| Improved process for parallel operation of several computation units, especially in image processing, and corresponding architecture. Several computation units which are together intended to evaluate in an iterative and cellular manner the convergence values of a plurality of variables |
| 5625195 |
High-energy implantation process using an ion implanter of the low-or medium-current type and co |
April 29, 1997 |
| In order to increase the implantation energy of an ion implanter of the medium-current type, a microwave generator, having a traveling-wave tube generating an electromagnetic field with a frequency greater than or equal to 6 GHz, is arranged in the implanter; the initial ion source of th |
| 5617231 |
Diffusing matrix liquid crystal display screen |
April 1, 1997 |
| A liquid crystal display screen which includes a first transparent plate covered with an electrode array and a second transparent plate covered with a counter-electrode. A liquid crystal film is inserted between the first and second plates. Further, either of the first or second tran |
| 5615265 |
Process for the transmission and reception of conditional access programs controlled by the same |
March 25, 1997 |
| Process for the transmission and reception of conditional access programs controlled by the same operator.According to the invention, specific check words (MCSi) are formed for various programs of the same operator from a root check word individual to said operator. The check words of th |
| 5615011 |
Interferometric system for the detection and location of reflector faults of light-guiding struc |
March 25, 1997 |
| Interferometric system for the detection and location of reflector faults of light-guiding structures.This system has a first interferometer comprising an incoherent light source (4), an optical coupler (6) connected to the source and to the structure (2), means (18a, 18b) for the displa |
| 5610944 |
Process and device for segmentation into sub-bands and for reconstruction of a digital signal, a |
March 11, 1997 |
| A process and device for segmentation into and reconstruction from sub-bands of a digital signal each sample of which are submitted to a parallel processing on a plurality of paths by prototype filtering modulated by a periodic function and sub-sampling by the number of sub-bands. A |
| 5604743 |
Method for the processing of data coming from an adaptation layer for transmission according to |
February 18, 1997 |
| Disclosed is a method for the processing of data coming from an adaptation layer for the transmission of messages in the form of a flow of cells on an ATM type asynchronous transfer network, the cells comprising a header followed by an information field. According to this method, the cel |
| 5604149 |
Method of and device for isolating active areas of a semiconducor substrate by quasi-plane shall |
February 18, 1997 |
| The semiconductor device comprises in a semiconductor substrate (1) at least one predetermined region (6) of the substrate intended subsequently to form an active area, uncovered on its upper surface and situated between the lateral trenches (7) containing an insulative material incl |
| 5600645 |
Bit rate reservation at switching nodes of an asynchronous network |
February 4, 1997 |
| Bit rate reservation is effected with the aid of a reservation cell containing a requested bit rate transmitted from a calling terminal to a called terminal via switching nodes of an asynchronous network. At each node, a bit rate increase request is at least partially satisfied even if |
| 5598500 |
Fixing, earthing and sealing device for optical cables |
January 28, 1997 |
| Device for fixing, earthing end sealing the end of an optical cable, including at least one optical module, an outer jacket, especially made of relatively deformable plastic, having a cylindrical general shape, freely surrounding the optical module consisting of a set of adjacent fibres |
| 5594583 |
Apparatus for re-shaping a train of light pulses, and apparatus for recovering a periodic signal |
January 14, 1997 |
| Apparatus for reshaping a train of light pulses includes an electro-absorbent modulator to which the train of pulses is applied for the purpose of being resynchronized and reshaped. A periodic signal generator that is adjustable in phase and frequency applies a periodic signal to the |
| 5583963 |
System for predictive coding/decoding of a digital speech signal by embedded-code adaptive trans |
December 10, 1996 |
| A system for predictive coding of a digital speech signal with embedded codes used in any transmission system or for storing speech signals. The coded digital signal (S.sub.n) is formed by a coded speech signal and, if appropriate, by auxiliary data. A perceptual weighting filter is form |
| 5581572 |
Wavelength-tunable, distributed bragg reflector laser having selectively activated, virtual diff |
December 3, 1996 |
| A wavelength-tunably distributed Bragg reflector laser having selectively activated virtual diffraction gratings including a semiconductor guide layer (4) between two other semiconductor confinement layers (6,8) of opposite dopings. A passive part of the laser has sections (SC1, SC2, |
| 5581550 |
Procedure for time spacing of transmittals from cells relating to messages, as well as devices f |
December 3, 1996 |
| A process is described for spacing over time the transmissions of cells that belong to messages. The value of the address of the first cell of the message is stored in relation to the clock-time of the sending. At each time given by a local clock-time, the address value is read in relati |
| 5576875 |
Telecommunications network organized in reconfigurable wavelength-division-multiplexed optical l |
November 19, 1996 |
| In a telecommunications network organized in wavelength-division-multiplexed optical loops, each loop has tunable reception means tuned as a function of the density of the network traffic, thus being capable of being reconfigured as a function of requirements. The disclosed system ca |
| 5563897 |
Method for detecting information bits processed by concatenated block codes |
October 8, 1996 |
| The transmitted bits are coded according to the product of at least two systematic block codes. An iterative decoding is applied in order to determine, at each code word search step, a data matrix and a decision matrix which are used for the following step. The new decision matrix is |
| 5561675 |
Linearly polarized fiber-optic laser |
October 1, 1996 |
| A fiber-optic laser comprising a birefringent optic fiber possessing a Bragg grating at each of its ends,. A light source emits a light beam having two modes of polarization in the fiber. The birefringence of the fiber makes it possible to keep the two polarization modes separate. The |
