Patents by Inventor Stephane Bouyat
Stephane Bouyat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230236039Abstract: A capacitive displacement sensor system with interdigitated combs, includes capacitive detection in a direction perpendicular to the surfaces of the combs facing one another, the combs being subjected to a sinusoidal movement in the direction, comprising: a device for converting the capacitance delivered by the sensor into a voltage; an analog/digital converter configured to digitize the voltage delivered by the conversion device, and supply a digitized signal; and a control unit comprising: a harmonic estimator configured to estimate the amplitudes of the harmonics of order less than or equal to a maximum order based on the digitized signal and a reference angle corresponding to the instantaneous angle of the input angular frequency; and a signal reconstruction module for reconstructing the signal from the amplitudes and the reference angle that are supplied by the harmonic estimator and from the digitized signal delivered by the analog/digital converter.Type: ApplicationFiled: June 9, 2021Publication date: July 27, 2023Inventor: Stéphane BOUYAT
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Patent number: 8669813Abstract: The present invention relates to a device for neutralization of a signal obtained by transposition to a high frequency of a useful signal supplied by a unit of equipment, the said equipment having a spurious capacitance Cparasite that varies over time. The device comprises a neutralization capacitance Cneut and means with adjustable gain G, together with means for feedback controlling the gain G in such a manner that, continuously, G×Cneut=Cparasite.Type: GrantFiled: December 22, 2011Date of Patent: March 11, 2014Assignee: ThalesInventor: Stéphane Bouyat
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Patent number: 8570526Abstract: A gyrolaser with optical cavity includes a plurality of mirrors, at least one photo-detector delivering two optical signals in phase quadrature, said signals being digitized. The position of one of said mirrors is controlled by conversion of an electrical signal into a mechanical force. The gyrolaser is activated in an oscillatory movement by conversion of an oscillation electrical signal into a mechanical force. The angular velocity of said gyrolaser is measured, and the phase ? and the modulus ? or the square of the modulus ? are extracted from said optical signals.Type: GrantFiled: April 12, 2011Date of Patent: October 29, 2013Assignee: ThalesInventor: Stéphane Bouyat
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Publication number: 20120326789Abstract: The present invention relates to a device for neutralization of a signal obtained by transposition to a high frequency of a useful signal supplied by a unit of equipment, the said equipment having a spurious capacitance Cparasite that varies over time. The device comprises a neutralization capacitance Cneut and means with adjustable gain G, together with means for feedback controlling the gain G in such a manner that, continuously, G×Cneut=Cparasite.Type: ApplicationFiled: December 22, 2011Publication date: December 27, 2012Applicant: THALESInventor: Stéphane Bouyat
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Patent number: 8339154Abstract: A method for testing a line including an input/output pin of a programmable logic circuit, said line including at least one individual line extending from the input/output pin to a peripheral element, said input/output pin being able to be either at a high logic level or at a low logic level opposite to the high logic level. The method includes, between an initial driving instant and a final driving instant, a step for driving the input/output pin in which a driving voltage is applied to the terminals of the input/output pin.Type: GrantFiled: March 17, 2010Date of Patent: December 25, 2012Assignee: ThalesInventor: Stéphane Bouyat
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Publication number: 20110249269Abstract: A gyrolaser with optical cavity includes a plurality of mirrors, at least one photo-detector delivering two optical signals in phase quadrature, said signals being digitized, means for controlling the position of one of said mirrors by conversion of an electrical signal into a mechanical force, means for activating said gyrolaser in an oscillatory movement by conversion of an oscillation electrical signal into a mechanical force and means for measuring the angular velocity of said gyrolaser, and also includes: means for extracting the phase ? and the modulus ? or the square of the modulus ? from said optical signals; means for locking the length of the optical cavity; means for deriving said phase ? over a given period of time in order to produce a signal comprising the overall movement information for said gyrolaser; and means for locking the activation of said gyrolaser onto said oscillatory movement, receiving said signal, extracting from which an estimation of the oscillatory movement imparted on said gyrType: ApplicationFiled: April 12, 2011Publication date: October 13, 2011Applicant: THALESInventor: Stephane BOUYAT
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Publication number: 20110084723Abstract: A method for testing a line including an input/output pin of a programmable logic circuit, said line including at least one individual line extending from the input/output pin to a peripheral element, said input/output pin being able to be either at a high logic level or at a low logic level opposite to the high logic level. The method includes, between an initial driving instant and a final driving instant, a step for driving the input/output pin in which a driving voltage is applied to the terminals of the input/output pin.Type: ApplicationFiled: March 17, 2010Publication date: April 14, 2011Applicant: ThalesInventor: Stéphane Bouyat
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Patent number: 7683601Abstract: The invention relates to a digital acquisition device for an amplitude modulation signal of a carrier. The acquisition device digitally acquires a useful signal. The useful signal modulates the amplitude of a carrier HF1 which has a frequency and a phase that are known. A modulation of the amplitude of the carrier by the useful signals forms a signal to be processed. According to the invention, the device has a summing device for creating an aggregate signal from a sum of the signal to be processed and a neutralizing signal. The neutralizing signal is a product of the carrier HF1 and of a neutralizing coefficient that can evolve over time, produced by a controlled-gain amplifier device. A load amplifier device amplifies the aggregate signal and produces an amplified aggregate signal. A quadrant comparison device QC is provided for the signal of the amplified aggregate signal and the sign of the carrier which delivers a comparison signal. A sampling device produces a bitstream from the comparison signal.Type: GrantFiled: November 8, 2006Date of Patent: March 23, 2010Assignee: ThalesInventor: Stephane Bouyat
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Publication number: 20080315935Abstract: The invention relates to a digital acquisition device for an amplitude modulation signal of a carrier. The acquisition device digitally acquires a useful signal. The useful signal modulates the amplitude of a carrier HF1 which has a frequency and a phase that are known. A modulation of the amplitude of the carrier by the useful signals forms a signal to be processed. According to the invention, the device has a summing device for creating an aggregate signal from a sum of the signal to be processed and a neutralizing signal. The neutralizing signal is a product of the carrier HF1 and of a neutralizing coefficient that can evolve over time, produced by a controlled-gain amplifier device. A load amplifier device amplifies the aggregate signal and produces an amplified aggregate signal. A quadrant comparison device QC is provided for the signal of the amplified aggregate signal and the sign of the carrier which delivers a comparison signal. A sampling device produces a bitstream from the comparison signal.Type: ApplicationFiled: November 8, 2006Publication date: December 25, 2008Applicant: ThalesInventor: Stephane Bouyat