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Assignee: Centre National d'Etudes Spatiales


Location: Paris, FR
No. of patents: 99

1      
NumberTitleIssue Date
8180010Method for receiving frames of a digital stream
A receiving method for a digital stream, the stream including frames having each a body composed of a variable number c of symbols and preceded by a header including d symbols, a field composed of a fixed number e of symbols unknown to the receiver and defining the ...
05/15/2012
8164542Antenna using a PBG (photonic band gap) material, and system and method using this antenna
An antenna uses a photonic forbidden band (PFB) material in which, by default, a surface (26) for injecting and/or receiving electromagnetic waves in a resonance cavity of the antenna (8) has at least a width or a length of a diameter higher than or eq...
04/24/2012
8149180Antenna with resonator having a filtering coating and system including such antenna
The invention relates to an antenna for transmitting or receiving electromagnetic waves at a working frequency fT, that comprises a resonator with a filtering (49) coating that covers the major portion of the upper face of a reflector (22) l...
04/03/2012
8144752Method and device for receiving a BOC modulation radio-navigation signal
Disclosed is a receiver and a method for receiving a radio-electric navigation signal modulated by a carrier at a frequency fp, a sub-carrier at a frequency fsp and a pseudo-random code at a frequency fc, in which the radio-electric ...
03/27/2012
8094697Method and device for the demodulation of satellite radio navigation signals
For demodulating radio navigation signals (s(t)) transmitted in spread spectrum and comprising a data channel modulated by a navigation message and a pilot channel not modulated by a navigation message, the data channel and the pilot channel are combined into one mu...
01/10/2012
8064687Fine stereoscopic image matching and dedicated instrument having a low stereoscopic coefficient
The invention relates to a method and system for the acquisition and correlation matching of points belonging to a stereoscopic pair of images, whereby the pair is formed by a first image and a second image representing a scene. According to the invention, the two i...
11/22/2011
7816770Device and method for hermetically sealing a cavity in an electronic component
To hermetically seal a cavity in a microelectronic component, a cap located in a sealing device is positioned above the orifice opening into the cavity. The cap plastically deforms to seal the cavity. The sealing device includes a cavity permitting the cavity of the...
10/19/2010
7784740Star blanking method, device and assembly therefor
The invention relates to a self-contained device (4) for blanking out the light rays from at least one star (1), which device (4) comprises means (43) for controlling propulsion means (44) which are in turn capable of moving or hal...
08/31/2010
7692151Device for analyzing an integrated circuit
A device (10) for analyzing a circuit (14) includes at least one element (22) for observing light emitted by at least one localized observation zone of the circuit resulting from the electric current flowing in the zone; elements (26) for exciting the circuit. The c...
04/06/2010
7560940Method and installation for analyzing an integrated circuit
A method and installation for analyzing an integrated circuit. The method includes, for a plurality of surface points of the integrated circuit, the following steps: applying a laser radiation, in one point of the surface of the integrated circuit; exciting the circ...
07/14/2009
7543441Hall-effect plasma thruster
A plasma thruster having a magnetic circuit of a downstream bottom plate from which arms protrude. At least one of the arms includes a permanent magnet. The mass, overall dimensions, electricity consumption, and cost of the thruster are thereby reduced. ...
06/09/2009
7417424Magnetic-field-measuring device
A device (16) used to measure at least one component of a magnetic field, includes a magnetoresistive sensor (102) and a measuring chain (28). The input of the measuring chain is connected to the magnetoresistive sensor (102), while the o...
08/26/2008
7411564Frequency multiband antenna with photonic bandgap material
A frequency multiband antenna includes a photonic bandgap material having at least one band gap, one single periodicity defect of the bandgap material so as to produce several narrow bandwidths within the at least one band gap of the bandgap material, and an excitat...
08/12/2008
7411391Magnetic-field-measuring probe
A magnetic-field-measuring probe includes at least one magnetoresistive or magnetoinductive sensor which is sensitive to the magnetic field along a privileged measurement axis. The probe includes: at least two magnetoresistive or magnetoinductive sensors (14, 16
08/12/2008
7408342Device for measuring a component of current based on magnetic fields
A magnetic-field-measuring probe includes at least two magnetoresistive sensors which are sensitive to respective magnetic fields along a determined measurement axis. The at least two magnetoresistive sensors are rigidly connected to one another in a position such t...
08/05/2008
7242368Multibeam antenna with photonic bandgap material
A multibeam antenna includes: a photonic bandgap material (20) having at least one band gap; at least one periodicity defect so as to produce at least one narrow bandwidth inside the at least one band gap of the photonic bandgap material, and excitation eleme...
07/10/2007
7233299Multiple-beam antenna with photonic bandgap material
A system includes a device for focusing electromagnetic waves, and a multiple-beam antenna. The antenna includes: a photonic bandgap material (20) having at least one band gap, at least one periodicity defect (36) of the photonic bandgap material so as...
06/19/2007
7227114Method of estimating the attitude of a space device with improved precision
A method of determining the attitude of a spacecraft is provided. The method may include sensing the projections of a plurality of stars on a sensor, converting the projections into sensor-star directions, and determining the angular values of the spacecraft relativ...
06/05/2007
7190822Method for customizing an integrated circuit element
A customizing method includes steps which consist in: a) determining on the basis of a circuit model, a set of vectors each corresponding to a theoretical operating time of the circuit when a predetermined sequence of tests is applied, the coefficients of each vecto...
03/13/2007
7123203Circularly polarized wire antenna
Each of the strands being powered by a single conducting wire wherein each of these strands describes an initial segment which is radial relative to a geometric axis perpendicular to the main plane, each of the strands is extended along a circle arc center on this g...
10/17/2006
7113046Apparatus for supplying a standard frequency signal using a simple microwave synthesis
The invention relates to a device (1) for producing a reference frequency signal (Se) from the response of an atomic resonator (R) to a pumping signal (Fat) transmitted thereto, comprising: a first oscillator for production of a first signal (S1) of fr...
09/26/2006
7031059Device for acquiring stereoscopic images
The invention concerns a device for acquiring stereoscopic images comprising a primary mirror (1) or a near-parabolic mirror, a secondary mirror (2) located on the primary mirror optical axis between said primary mirror and its focal point, tertiary re...
04/18/2006
7024594Software system tolerating transient errors and control process in such a system
The present invention concerns a software system that tolerates transient errors made up by a processing unit, including: at least two processing units (50, 51) with each one including: a microprocessor (...
04/04/2006
6948107Method and installation for fast fault localization in an integrated circuit
The invention relates to a method and an installation for fast location of a fault in an integrated circuit. A sequence of NRZ location vectors is created, the abnormal location vectors are determined, for which the value of the electrical consumption current at res...
09/20/2005
6882908Method for calculating instantaneous characteristics of a satellite in orbit, equipped with a GNSS receiver
A method for calculating instantaneous characteristics of a satellite in orbit equipped with a GNSS receiver, capable of performing measurements of pseudo-distance, when fewer than four transmitters are simultaneously in visibility. This method pre-processes quantit...
04/19/2005
6839868Method for processing an electronic system subjected to transient error constraints and memory access monitoring device
This invention relates to a processing procedure for an electronic system subject to transient error constraints, in which two virtual sequences installed on a single physical sequence are multiplexed in time in one given real time cycle (the data resulting from eac...
01/04/2005
6831526Phase and amplitude digital modulation circuit and method
A method and a circuit for modulating a carrier signal (Se) with a signal (SCj) having at least a modulation cell (CMi) by phase shift for receiving two digital control signals (Scji, SCji2) representing at least part of the digital modulation signal (SCj). F...
12/14/2004
6816614Method for comparing recorded pixel images representing equipotential lines of at least an integrated circuit chip
The invention concerns a method for comparing two recorded pixelated source images (2a, 2b) of the same rectangular format representing in contrasted form the equipotential lines on an integrated circuit chip. The method consists in subje...
11/09/2004
6725034Method for synchronizing a space telecommunications system comprising at least one satellite
The invention relates to a method for synchronizing a space telecommunications system comprising at least one satellite and several user terminals, each satellite comprising: off-line and real time means (20) delivering tracking measurements; a ...
04/20/2004
6678521Method for determining amplitudes and phases of the different channels in an electromagnetic signal transmission network, such as a telecommunication satellite antenna
Amplitudes and phases of different channels in an electromagnetic signal transmission network, whereof the sources are arranged in a triangular lattice, are determined by tiling the lattice with hexagons having six equal sides, the hexagonal tiles that ar...
01/13/2004
6666612Flexural pivot
A pivot has identical first and second members partially engaged in each other and mobile in rotation relative to each other about a common axis, against the action of at least two return leaf springs each having first and second ends anchored in the firs...
12/23/2003
6552341Installation and method for microscopic observation of a semiconductor electronic circuit
The installation for microscopic observation of a semiconductor electronic circuit includes, in a vacuum, a reflection particle interaction microscope and parts for supporting the circuit facing the reflection particle interaction microscope. The installa...
04/22/2003
6529267Method for acquiring an image by oversampled push-broom scanning
The invention concerns a method for acquiring an image by oversampled push-broom scanning from a satellite-borne vehicle or aircraft carrying at least a load transfer sensor bar, characterised in that it consists in controlling the attitude and the vehicl...
03/04/2003
6526546Method for locating faulty elements in an integrated circuit
A process for locating defective elements in an integrated circuit. The integrated circuit is modelled in the form of a tree formed of nodes and oriented arcs. Measurements are performed at various nodes of the circuit by applying a sequence of tests at t...
02/25/2003
6493021Image acquisition by push-broom scanning
An improvement to a method of acquiring and processing a satellite observation image of the earth through the use of one strip or a matrix of charge coupled device type detectors. As the detectors travel over an observed zone, a plurality of pixels are ac...
12/10/2002
6489063Additives for improving the reversibility of a carbon electrode of a lithium ion secondary electrochemical generator
The invention relates to additives to improve the reversibility of a carbon electrode of a lithium ion secondary electrochemical generator. These additives are composed of cyclic or non-cyclic ଱-halogenated esters such as ଱-bromo-γ-butyrolact...
12/03/2002
6403260Carbon product rich in lithium for use as negative electrode in a lithium cell
The invention relates to a lithium-rich carbonaceous substance which can be used as a negative electrode in a lithium accumulator. This substance has the following formula: LiNax Cy Oz (I) in which x, y and z are such that 0.4ࣘxà...
06/11/2002
6371413Artificial satellite equipped with generators of magnetic and aerodynamic moments and control process for such a satellite
Orientation system and process of an artificial satellite in low orbit. Aerodynamic control surfaces producing rotations of the satellite by upper-layer atmosphere are combined along two axes to magnetic couplers (1, 2, 3) producing rotating movements alo...
04/16/2002
6334235Self-driving, self-locking and damping hinge strap, and a hinge fitted with such straps
The invention relates to a self-driving and self-locking hinge strap for mounting between two adjacent elements (A1, A2), the strap being of the type constituted by at least one resilient strip (3) preformed to have a section that is...
01/01/2002
6300916Transmission device with omnidirectional antenna
The invention discloses a transmission device comprising an antenna having a plurality of aerial wires uniformly distributed regularly in a helix about a cylindrical generatrix, and means for feeding the aerial wires with a radio frequency signal. The inv...
10/09/2001
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