| Patent Number |
Title Of Patent |
Date Issued |
| 6646995 |
Method of adapting the air interface and mobile radio system and corresponding base transceiver |
November 11, 2003 |
| A mobile radio system enables exchange of bidirectional digital signals between at least one mobile station and at least one base transceiver station and provides at least two coding modes, each mode corresponding to a predetermined source code and a predetermined channel code for the |
| 6459690 |
Channel selector device for multiple access direct transmission systems between mobile stations |
October 1, 2002 |
| A channel selector device for a multiple access system of direct transmission between mobile stations carries out measurements on various channels during calls in order to determine if there is a better channel than the traffic channel used for the call. This better channel constitut |
| 6456598 |
Method of adapting the air interface in a mobile radio system and corresponding base transceiver |
September 24, 2002 |
| A mobile radio system enables exchange of bidirectional digital signals between at least one mobile station and at least one base transceiver station and provides at least two coding modes, each mode corresponding to a predetermined source code and a predetermined channel code for the |
| 6282946 |
Leak detector |
September 4, 2001 |
| A leak detector including at least one analysis unit connected to the inlet of a first secondary pump, a pre-evacuation set connected to an inlet coupling, the inlet of said pre-evacuation set further being connected to the outlet of said first secondary pump via a pipe provided with a f |
| 6262821 |
Optical spectral multiplexer for inserting and extracting |
July 17, 2001 |
| An extract-and-insert optical wavelength division multiplexer includes a broadcaster (D1) for applying an incoming multiplex signal to N outputs, a combiner-diffuser (D2) for broadcasting the multiplex to be inserted (MI) on N outputs, a first set of N tunable filters (FIT, . . . , FNT) |
| 6148423 |
Signal transmission performance optimization device in a system for transmitting digital data, e |
November 14, 2000 |
| A system for transmitting digital information, especially on an optical link, comprises a send end unit and a receive end unit. It includes a device for evaluating the bit error rate at the receiving end and a device for controlling one or more characteristic parameters of the send end u |
| 6134220 |
Method of adapting the air interface in a mobile radio system and corresponding base transceiver |
October 17, 2000 |
| A mobile radio system enables exchange of bidirectional digital signals between at least one mobile station and at least one base transceiver station and provides at least two coding modes, each mode corresponding to a predetermined source code and a predetermined channel code for the |
| 6094145 |
Telecommunication management system |
July 25, 2000 |
| A telecommunication management system including management centers provides management services which communicate via management messages in both directions with telecommunication network elements of a telecommunication network and a management message transfer point which enables the |
| 6072847 |
Base transceiver station for cellular mobile radio system and system for synchronizing such base |
June 6, 2000 |
| A system for synchronizing base transceiver stations includes a reference base transceiver station and a subordinate base transceiver station. Each base transceiver station has a clocks with the same frequency but any relative phase, and a timing reference. The reference base transceiver |
| 6031829 |
Base transceiver station for cellular mobile radio system and system for synchronizing such base |
February 29, 2000 |
| In a TDMA type cellular mobile radio system frequencies are shared between cells of the same re-use pattern and frequency hopping is used so that the frequency used at any time in one of the cells of a re-use pattern is different from those used at the same time in the other cells of tha |
| 6023543 |
Bidirectional optical link, and device for amplifying such link |
February 8, 2000 |
| An end station of a both-way optical link comprises: a receiver (RX) preceded by a receive optical amplifier (RA); a transmitter (TX) followed by a transmit optical amplifier (TA); a pump laser diode (PX) for delivering the pumping waves required by said amplifiers; and a coupler (B) |
| 6023201 |
Electrical signal transmission device protected against electromagnetic interference |
February 8, 2000 |
| An electrical signal transmission device includes a core and an outer conductor separated by a dielectric. To eliminate external radiated interference, for which the device behaves like a receiving antenna, the core, the outer conductor and/or the dielectric feature discontinuities f |
| 5924034 |
Cellular mobile radio system and base transceiver station and base station controller therefor |
July 13, 1999 |
| A cellular mobile radio system selects the best cell to be accessed for a given position of a mobile station by determining the distance of the mobile station relative to the base transceiver station of a cell with which it is communicating by measuring the propagation time between the |
| 5920627 |
Encryption device and decryption device for information conveyed by asynchronous transfer mode c |
July 6, 1999 |
| An encryption device can be used to encrypt information units conveyed by cells that are broadcast from an optical broadcast node to network units by a passive optical network. Each cell conveys at least one information unit and each information unit is addressed to a respective subscrib |
| 5914795 |
Method of and device for amplifying channels extracted from a wavelength division multiplex |
June 22, 1999 |
| To optimize the amplification in a device for extracting channels from a wavelength division multiplex, the following steps are carried out in succession: a first amplification step with a first gain, a wavelength selection step, and a second amplification step with a second gain. The |
| 5895202 |
Molecular drag pump |
April 20, 1999 |
| A molecular drag pump including a stator and a rotor supported in the stator using two ball bearings at least one of which presses against at least one bearing surface of the stator serving as an axial abutment for the rotor, wherein the contact between the ball bearing and the bearing |
| 5867534 |
Optical transmission method with reduced sensitivity to dispersion, transmission device and syst |
February 2, 1999 |
| An optical transmission method and device consisting of coding a binary data pattern (SI) to be transmitted in the form of a second binary signal (SM), by differential coding; filtering the second binary signal (SM) to obtain a duobinary signal (SMF having three meaningful values (-1, |
| 5841984 |
Method of assigning transaction identifiers and system for implementing the method |
November 24, 1998 |
| A method of assigning transaction identifiers assigns an identifier that is unique to each transaction, each transaction operating on data distributed across various stations. The method determines a first field of the identifier, having either a temporary value identifiable as such and |
| 5822315 |
Air interface adapting method for a mobile radio system |
October 13, 1998 |
| A mobile radio system conveys frames between at least one mobile station and at least one base station, each frame comprising N time slots, a burst of data being transmitted in each time slot, and each time slot being associated with a separate call between a mobile station and a base |
| 5805993 |
Cell level change control device for cellular mobile radio networks with more than one level of |
September 8, 1998 |
| A cell level change control device for cellular mobile radio networks with more than one level of cells includes means for comparing the value of a parameter representative of the speed of a mobile station with a threshold in order to decide if it is necessary to command a cell level cha |
| 5793766 |
Multiplexing process in an asynchronous transfer mode telecommunication network and switching no |
August 11, 1998 |
| A multiplexing process in an asynchronous transfer mode telecommunication network consists in placing a payload in a series of cells supporting the same logical channel a series of data containers supporting the same logical channel, each container including a load that is a quantity of |
| 5728929 |
Installation for detecting the presence of helium in a fluid circuit |
March 17, 1998 |
| An installation for detecting the presence of helium in a fluid circuit, the installation including a tapping member constituting a volume comprising a first internal space and a second internal space separated from each other by a semi-permeable partition through which helium can pa |
| 5722819 |
Molecular drag pump |
March 3, 1998 |
| A molecular drag pump comprising a rotor and a stator, the pump being of the type including at least alternating finned stages of the rotor and of the stator, and in which the rotor is bell-shaped, while the stator includes at least one external portion carrying the stator fins and at |
| 5720174 |
Secondary pump unit |
February 24, 1998 |
| A secondary pump unit comprising a mechanical secondary pump and a cryogenic trap, wherein the cryogenic trap forms a ring surrounding the outside of the mechanical secondary pump at its intake end, and the trap is enclosed in a casing defining, in parallel, the intake opening of the |
| 5712982 |
TDMA point-to-multipoint transmission network with a multiframe which includes a single continuo |
January 27, 1998 |
| In a time division multiple access point-to-multipoint transmission network, data is transmitted from a central station to local stations in multiframes containing a plurality of frames and a single free period allowing transmit time measurements and reflectometry measurements. Data |
| 5712854 |
Method of routing cells in an asynchronous time-division multiplex switching network and corresp |
January 27, 1998 |
| In a method of routing cells in an asynchronous time-division multiplex switching network interconnecting input switches and output switches via switches, each input switch can be connected to each output switch via at least two paths. The transmission of a sequence of cells of a given c |
| 5703707 |
High capacity switching matrix |
December 30, 1997 |
| A simple implementation of a high-capacity switching matrix includes four input functional modules each having one input and four outputs and four output functional modules each having four inputs and one output. A broadcast network has 16 inputs connected to the 16 outputs of the input |
| 5701303 |
Asynchronous time-division multiplex packet transmission link control information transmission m |
December 23, 1997 |
| In a method of transmitting asynchronous time-division multiplex transmission link control information the control information produced by the control process is transmitted in the form of control cells. At the transmitting end the control cells conform to a format enabling them to be |
| 5686772 |
Magnetic bearing and an assembly comprising a stator portion and a rotor portion suspended via s |
November 11, 1997 |
| The bearing has a fixed portion, and a moving portion, and includes a passive magnetic abutment composed of a fixed element secured to said fixed portion, and of a moving element secured to said moving portion. The bearing further including a passive magnetic centering bearing which is |
| 5684844 |
Phase-locking method and a loop applying the method |
November 4, 1997 |
| The relates to locking the phase of output signal (Ys) relative to an input signal (Ye). A first frequency correction signal (Yr1) is obtained by integrating a signal representative of an error of said phase relative to a reference defined by the input signal. It then cooperates with a s |
| 5681983 |
Tracer gas leak detector |
October 28, 1997 |
| A tracer gas leak detector includes a mass spectrometer delivering a signal q proportional to the partial pressure of the tracer gas in the spectrometer, wherein the detector further includes apparatus for obtaining from the signal q a signal ##EQU1## where A is an adjustable amp |
| 5678008 |
Signaling protocol supporting multimedia services employing an automation with multiple states a |
October 14, 1997 |
| This protocol consists in, among other things, updating in all the terminals and in all the nodes of the telecommunication network which a given call concerns a matrix representing the status of each terminal (TA, TB, TC) which is a party to the call in question vis-a-vis each connection |
| 5673267 |
Method of allocating carrier frequencies for simultaneous transmission of a plurality of modulat |
September 30, 1997 |
| In a method of allocating carrier frequencies for simultaneous transmission of a plurality of modulated signals the carrier frequencies are chosen to satisfy the equation:where "p" is an integer number specific to each carrier frequency, "n" represents a given frequency bandwidth and "k" |
| 5657474 |
Transactional protocol and system for implementing it |
August 12, 1997 |
| A transactional protocol allocates write intention locks at the time of access to a transaction modifying data stored in a memory. These locks do not prohibit the allocation of read locks to other transactions. The other transactions can therefore read the old values of the variables unt |
| 5657143 |
Optical transmission system suitable for video-communication cable networks |
August 12, 1997 |
| A system for transmission on an optical link by modulating an optical carrier suitable for video-communication cable networks, includes devices for increasing the modulation of the optical carrier, such as increasing the intensity modulation. The system is particularly suited for the cas |
| 5654956 |
Switching network for interconnecting bothway input/output links, use and method of enlarging su |
August 5, 1997 |
| The invention relates to a switching network enabling a plurality of bothway I/O links to be interconnected. In one embodiment of the invention, the network includes at least two nodes, each node possessing not more than k incident I/O points, k.gtoreq.2, n sets of k extended I/O poi |
| 5652473 |
Rotary assembly including in particular radial support means and a magnetic axial abutment |
July 29, 1997 |
| A rotary assembly comprising a stator and a rotor of axis .DELTA., rotary drive means, radial support means, and an active magnetic axial abutment comprising a magnetic circuit in two portions, namely a fixed portion, and a moving portion, the two portions being separated from each other |
| 5621775 |
Device for justifying a digital bit stream at regular intervals |
April 15, 1997 |
| A digital bit stream from a first synchronous link is timed by a first clock and is to be sent over a second synchronous link timed by a second clock. A device for justifying the bit stream at regular intervals includes a buffer memory. Respective pointers supply buffer memory write |
| 5612805 |
Add-drop optical spectrum-division multiplexer |
March 18, 1997 |
| An add-drop optical spectrum-division multiplexer for dropping a drop multiplex from an incoming multiplex signal and for adding an add multiplex into an outgoing multiplex signal. The multiplexer includes a demultiplexing device for separating a number of optical carriers from the i |
| 5581493 |
Device for filtering positive dejustification jitter of a digital bit stream and application the |
December 3, 1996 |
| A device for filtering positive dejustification jitter of a digital bit stream includes a phase-locked loop for slaving the timing of a signal representative of the read timing of a buffer memory into which the dejustified digital bit stream is written to the timing of a signal repre |
| 5553247 |
Method for unblocking a multibus multiprocessor system |
September 3, 1996 |
| In the field of multiprocessor systems of the type including at least one processing module made up of processors which are connected to a main bus or several processing modules which communicate with each other via bus coupling modules, a bus deblocking system is provided in which, usin |
| 5542825 |
Turbomolecular vacuum pump |
August 6, 1996 |
| A turbomolecular pump comprising a stator and a rotor, said rotor comprising a central shaft and a bell-shaped active portion, said stator comprising an outer portion and an inner portion that penetrates into the cavity of said bell-shaped active portion, and that supports the stator |
| 5533114 |
Telecommunication system comprising subscriber connection units having independent routing abili |
July 2, 1996 |
| A cellular radiotelephone network including a connection unit having a conventional first No. 7 signalling point for providing conventional control of access to a parent exchange for subscribers connected to connection units by means of signalling messages in compliance with interfac |
| 5521915 |
Synchronous digital channel cell assembly and disassembly device, synchronous digital channel sw |
May 28, 1996 |
| A cell assembly device switches and assembles synchronous digital channels into asynchronous transfer mode cells supporting asynchronous logical channels. The cells are sent on asynchronous multiplex links, and the synchronous digital channels are conveyed by synchronous multiplex links |
| 5517526 |
Timing recovery device in a receiver circuit for modems |
May 14, 1996 |
| A receiver circuit for audio frequency modems, comprising an input module (11) for receiving and sampling an analog input signal representing digital data, an adaptive equalizer (12, 14, 15) having a transversal filter (12) with a plurality of complex multiplier coefficients ordered |
| 5491577 |
Tunable optical filter tuning device suitable for use in the receive part of an optical transmis |
February 13, 1996 |
| A tunable optical filter tuning device suitable for use in the receive part of an optical transmission system rejects some of the optical noise superimposed on a wanted optical signal. The device commands displacement of the characteristic of the optical filter along the wavelength axis |
| 5471510 |
Asynchronous transfer mode digital telecommunication network terminal equipment synchronization |
November 28, 1995 |
| A synchronization device, in an asynchronous transfer mode digital telecommunication network terminal equipment consists of: a jitter filter for filtering transfer jitter introduced by a network of this kind and affecting the clock frequency at which the equipment receives data via the |
| 5469430 |
Method and devices for simultaneous transmission of two heterochronous binary signals on the sam |
November 21, 1995 |
| In a method for simultaneous transmission of two heterochronous binary signals in the form of a single binary signal on a common physical medium, the second binary signal is timed by a bit clock whose period is greater than the minimal duration allowed for a bit of the first signal. For |
| 5452450 |
System of global update for time/language heterogeneous databases using a relational reference d |
September 19, 1995 |
| A database network management method ensures consistency of modifications to data in a network of databases comprising a relational database which constitutes a reference database and at least one further database accessible in real time. The data of the relational database is duplicated |
| 5444238 |
Device for assessing the transmission quality of an optical amplifier equipment |
August 22, 1995 |
| A device for assessing the transmission quality of an optical amplifier includes a coupler for sampling on the upstream side of the amplifier equipment relative to the direction of propagation of the optical signal to be amplified by the amplifier equipment part of the power of an optica |
