Patents Assigned to Institut Franco-Allemand de Recherches de Saint-Louis
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Publication number: 20110055129Abstract: The invention concerns a process for the representation of a scanning function by means of a neuronal network and a device for the implementation of the process, whereby measurement values associated with a turbulent wave front, which contain phase information, are compared with reference values, with the result that the intermediate values thus obtained can be compared with comparison functions, in order, in the best case, to describe the measured pattern with a selection of comparison functions, whereby a neuronal network is trained in the comparison functions, so that the processing of the measured pattern can take place in near-real time.Type: ApplicationFiled: June 17, 2010Publication date: March 3, 2011Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Alexander Pichler, Pierre Raymond, Marc Eichhorn
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Patent number: 7891360Abstract: An earplug that includes a piezoelectric element that converts electrical signals into oscillations; and a deformable material of which at least one segment is insertable into an external auditory canal of a person to ensure an acoustic seal by deformation, the piezoelectric element being disposed inside the deformable material and in fixed contact therewith, the deformable material being able to transmit the oscillations at a periphery and ensure conduction of the oscillations through cartilage and soft tissue of the auditory canal.Type: GrantFiled: June 26, 2006Date of Patent: February 22, 2011Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventors: Karl Buck, Markus Christoph
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Patent number: 7792168Abstract: A heat capacity laser having a solid lasing medium, at least one pumping source that is able to emit a pumping radiation, and an optical cavity that can be characterized by having: at least one device able to homogenize the pumping radiation, a doped lasing medium having a body with a first and a second end and being stretched in the length by more than 6 cm and whose height in cross section is less than its stretching in the length of the lasing medium. The doping concentration in the lasing medium may vary axially. Also either the cavity can have beam forming optics and the doping concentration of the lasing medium is radially uniform, or the cavity can have no beam forming optics and the lasing medium has a doping concentration that may vary radially.Type: GrantFiled: July 17, 2008Date of Patent: September 7, 2010Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventor: Marc Eichhorn
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Patent number: 7750098Abstract: A method of manufacturing, by suspension polymerization, dielectric copolymers, including injecting an initial mixture of constituent monomers into an autoclave at constant temperature and pressure, wherein the mixture of constituent monomers including vinylidene difluoride (VDF), trifluoroethylene (TrFE), and a monomer 2 to 10 times more reactive than VDF and TrFE; and continuously reinjecting at constant pressure, as soon as the reaction is initiated and throughout the duration of polymerization, a second mixture of the constituent monomers, wherein the molar composition of the initial mixture and the second mixture are determined by calculation, in a manner known of itself, taking into account the desired molar composition of the copolymer and the higher reactivity of the third monomer.Type: GrantFiled: July 24, 2006Date of Patent: July 6, 2010Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventors: Christian Baras, Francois Bauer, Eric Fousson, Jean Blaise
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Publication number: 20100166297Abstract: The technical field of the invention is that of processing or generating image data, and it more particularly relates to a method for processing images consisting of pixels generated by an image sensor with a view to supplying input data to a simulated or wired neural process. The method is characterized in that it comprises a step of reading pixel-by-pixel in real time by processing means and a step of constructing prototype vectors during the pixel-by-pixel reading process on the basis of the values read, the prototype vectors constituting the input data of the neural process. It is intended for applications in global environmental perception and movement analysis. The method to which the invention relates may also be used for conventional image processing operations such as temporal filtering, and it makes it possible to save on computing time and memory space.Type: ApplicationFiled: November 12, 2009Publication date: July 1, 2010Applicant: Institut Franco-Allemand De Recherches De Saint-LouisInventors: Pierre Raymond, Alexander Pichler
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Patent number: 7645969Abstract: A method, device, and projectile having a device for guiding or piloting projectiles or missiles (self-propelled or non-self-propelled), to deflect, in a direction Y, a hypervelocity projectile operating in a gas, such as a shell, a bullet, or a missile, having a nose, generally in the shape of a cone, with a more or less pointed tip, by generating a first high-voltage discharge able to produce a plasma over a first limited sector of the projectile surface and in direction Y, maintaining the plasma, and generating another low-voltage discharge able to supply the plasma with energy over a second limited sector of the projectile surface and in direction Y, the first and the second sectors being different and may overlap.Type: GrantFiled: September 22, 2006Date of Patent: January 12, 2010Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventors: Patrick Gnemmi, Christian Rey
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Patent number: 7607341Abstract: The present invention relates to the investigation of particle characteristics, particularly to a device for measuring the apparent density distribution of a set of particles composed of several subsets of particles with different apparent densities and able to implement a flotation process to measure this distribution and comprising a flotation container, a stirrer and a system for measuring the density of the liquids, characterized in that the inside wall of the container has at least a first part in the shape of an inverted cone with axis Y whose height is 1.5 to 3 times its maximum diameter, and in that it has means for extracting liquid communicating with said first part at the vertex of the inverted cone, said means having a tube communicating with said first part at the tip of the inverted cone of which the first axis makes an angle of between ?/2 and 3?/2 radians with the second axis.Type: GrantFiled: April 4, 2007Date of Patent: October 27, 2009Assignee: Institut Franco Allemand de Recherches de Saint-LouisInventors: Lionel Borne, Jean-Louis Patedoye
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Patent number: 7602821Abstract: The invention is in the field of laser radiation generation in bands II and III, and relates to a device for generating laser radiation in the infrared having means for modifying the amplified-radiation frequency and using the Raman effect, characterized by additionally having at least one diode able to emit laser radiation in the 1.8-2.1 ?m frequency range, at least one current generator able to generate current levels at an adjustable repetition rate, means for supplying said current levels to said diode, and means for amplifying the laser radiation emitted by said diode and comprised of at least one fiber doped with an ion having laser activity in the diode emission range.Type: GrantFiled: December 10, 2004Date of Patent: October 13, 2009Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventors: Antoine Hirth, Marc Eichhorn
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Publication number: 20090201966Abstract: The present invention especially concerns the field of lasers. Specifically, the object of the invention is a process for the emission of pulsed laser radiation generated by at least one laser crystal which is located in a cavity containing a first and a second mirror and pumped by des pumping means, wherein said process includes a first stage which consists of generating a first pumping laser radiation with an intensity of Jc which is capable of bringing the crystal at least to the laser emission threshold and a second stage which consists of generating a second pumping laser radiation with an intensity of Jp in the form of a step, whereby said second radiation is superimposed, at least in part, on said first radiation or immediately succeeds it, and whereby the intensity Jp, in the latter case, is greater than the intensity Jc of said first radiation, as well as a laser source capable of activating said process.Type: ApplicationFiled: January 16, 2009Publication date: August 13, 2009Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Antoine Hirth, Christelle Kieleck
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Publication number: 20090190616Abstract: A laser device includes an outcoupling mirror, a laser medium, a phase-conjugate mirror based on stimulated Brillouin scattering, and an end mirror all arranged along an optical axis of the laser device. A controllable modulator is positioned between the phase-conjugate mirror and the end mirror. The outcoupling mirror and the end mirror form a start cavity. The outcoupling mirror and the phase-conjugate mirror form a main cavity.Type: ApplicationFiled: January 29, 2009Publication date: July 30, 2009Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventor: Marc Eichhorn
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Publication number: 20090182503Abstract: The invention relates to the field of inertial navigation systems and in particular to a method for determining the attitude, position, and velocity of a mobile device from knowledge of the direction of the earth's magnetic field in an absolute reference frame and signals supplied to processing means (4) of these signals by gyroscopic measuring means (1) in three axes, accelerometric measuring means (2) in three axes, and magnetic measuring means (3) in three axes, said measuring means being located on-board the device and according to three three-dimensional reference frames connected to the device reference frame OdXdYdZd, and characterized by comprising: a first step in which the attitude of the device is calculated at time K?1 from: signals coming from the gyroscopic measuring means (1) at time k signals coming from the accelerometric measuring means (2) at time k+1 the position and velocity of the device in the absolute reference frame at time k signals supplied by the magnetic measuring means (3) reType: ApplicationFiled: October 14, 2008Publication date: July 16, 2009Applicants: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUIS, SUPELECInventors: Sebastien Changey, Volker Fleck, Dominique Beauvois
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Patent number: 7552157Abstract: The present invention relates to a filtering procedure for recursive digital filters installed in signal processors (DSP) operating with integers. It comprises two calculation procedures coupled with the classical calculation procedure of a recursive filter, the first of which, when calculating the output value of the sample, takes into account the remainders of integer divisions by the scale factor, coming from calculating the output values for the previous samples, and the second of which replaces the default value from dividing the integer by a scale factor by the integer value closest to the result of actual division.Type: GrantFiled: November 18, 2005Date of Patent: June 23, 2009Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventors: Veronique Zimpfer, Karl Buck
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Publication number: 20090022190Abstract: A heat capacity laser having a solid lasing medium, at least one pumping source that is able to emit a pumping radiation, and an optical cavity that can be characterized by having: at least one device able to homogenize the pumping radiation, a doped lasing medium having a body with a first and a second end and being stretched in the length by more than 6 cm and whose height in cross section is less than its stretching in the length of the lasing medium. The doping concentration in the lasing medium may vary axially. Also either the cavity can have beam forming optics and the doping concentration of the lasing medium is radially uniform, or the cavity can have no beam forming optics and the lasing medium has a doping concentration that may vary radially.Type: ApplicationFiled: July 17, 2008Publication date: January 22, 2009Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventor: Marc Eichhorn
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Publication number: 20080011079Abstract: The present invention relates to the investigation of particle characteristics, particularly to a device for measuring the apparent density distribution of a set of particles composed of several subsets of particles with different apparent densities and able to implement a flotation process to measure this distribution and comprising a flotation, container, stirrer and a system for measuring the density of the liquids, characterized in that the inside wall of the container has at least a first part in the shape of an inverted cone with axis Y whose height is 1.5 to 3 times its maximum diameter, and in that it has means for extracting liquid communicating with said first part at the vertex of the inverted cone, said means having a tube communicating with said first part at the tip of the inverted cone of which the first axis makes an angle of between ?/2 and 3?/2 radians with the second axis.Type: ApplicationFiled: April 4, 2007Publication date: January 17, 2008Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Lionel Borne, Jean-Claude Patedoye
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Publication number: 20070200028Abstract: A method, device, and projectile having a device for guiding or piloting projectiles or missiles (self-propelled or non-self-propelled), to deflect, in a direction Y, a hypervelocity projectile operating in a gas, such as a shell, a bullet, or a missile, having a nose, generally in the shape of a cone, with a more or less pointed tip, by generating a first high-voltage discharge able to produce a plasma over a first limited sector of the projectile surface and in direction Y, maintaining the plasma, and generating another low-voltage discharge able to supply the plasma with energy over a second limited sector of the projectile surface and in direction Y, the first and the second sectors being different and may overlap.Type: ApplicationFiled: September 22, 2006Publication date: August 30, 2007Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Patrick Gnemmi, Christian Rey
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Publication number: 20070167590Abstract: A method of manufacturing, by suspension polymerization, dielectric copolymers, including injecting an initial mixture of constituent monomers into an autoclave at constant temperature and pressure, wherein the mixture of constituent monomers including vinylidene difluoride (VDF), trifluoroethylene (TrFE), and a monomer 2 to 10 times more reactive than VDF and TrFE; and continuously reinjecting at constant pressure, as soon as the reaction is initiated and throughout the duration of polymerization, a second mixture of the constituent monomers, wherein the molar composition of the initial mixture and the second mixture are determined by calculation, in a manner known of itself, taking into account the desired molar composition of the copolymer and the higher reactivity of the third monomer.Type: ApplicationFiled: July 24, 2006Publication date: July 19, 2007Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Christian Baras, Francois Bauer, Eric Fousson, Jean Blaise
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Publication number: 20070019688Abstract: The present invention relates in particular to the field of lasers and in particular to a laser source having a neodymium-doped crystal (2;23) or fiber and pumpable by pumping means (3; 25) and a non-linear Raman effect converter stimulated in methane (4; 32), characterized in that the crystal (2; 23) or fiber pumped by said pumping means (3; 25) is able to emit a laser radiation at a wavelength between 1.31 and 1.36 ?m and in that the Raman converter (4; 32) is able to convert the radiation generated by the crystal (2; 23) or by the fiber into at least one second radiation (7; 36) with a wavelength between 2 and 2.3 ?m.Type: ApplicationFiled: July 7, 2006Publication date: January 25, 2007Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Antoine Hirth, Christelle Kieleck
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Publication number: 20070000499Abstract: An earplug that includes a piezoelectric element that converts electrical signals into oscillations; and a deformable material of which at least one segment is insertable into an external auditory canal of a person to ensure an acoustic seal by deformation, the piezoelectric element being disposed inside the deformable material and in fixed contact therewith, the deformable material being able to transmit the oscillations at a periphery and ensure conduction of the oscillations through cartilage and soft tissue of the auditory canal.Type: ApplicationFiled: June 26, 2006Publication date: January 4, 2007Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUISInventors: Karl Buck, Markus Christoph
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Publication number: 20060272755Abstract: The invention relates to the field of explosives, and more particularly relates to particles of explosive, characterized in that they are in crystalline form, have a rounded shape and in that the majority of them contain no internal defect.Type: ApplicationFiled: June 2, 2006Publication date: December 7, 2006Applicant: INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT- LOUISInventor: Lionel Borne
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Patent number: 7051655Abstract: The invention relates to an optical detonator comprising a secondary explosive disposed in a cavity, an optical fiber having one end connected to a source of laser radiation, and a focusing optical interface situated between the other end of the optical fiber and the secondary explosive and adapted to transmit the laser radiation to the secondary explosive. According to the invention, a layer of an ignition powder is disposed in the cavity between the secondary explosive and the focusing optical interface.Type: GrantFiled: October 21, 2002Date of Patent: May 30, 2006Assignee: Institut Franco-Allemand de Recherches de Saint-LouisInventors: Henry Moulard, Augustre Ritter, Jean-Marie Brodbeck