Patents by Inventor Xavier Louis

Xavier Louis 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).

  • Publication number: 20110251502
    Abstract: There is provided a method for analyzing a ballistocardiogram signal to determine a heart rate, the method comprising: determining an initial time estimate for a first heart beat in the ballistocardiogram signal; computing, iteratively, estimates for subsequent heart beats in the ballistocardiogram signal using the initial time estimate; wherein each iteration in the step of computing comprises evaluating a target function that comprises a weighted sum of a plurality of scoring functions; and wherein each iterative step of computing estimates for subsequent heart beats in the ballistocardiogram signal is limited to a target interval after the time estimate found in the previous iterative step of computing.
    Type: Application
    Filed: December 7, 2009
    Publication date: October 13, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: David Friedrich, Xavier Louis Marie Antoine Aubert, Andreas Brauers, Hartmut Fuhr, Kurt Stadlthanner
  • Patent number: 8024078
    Abstract: A system on an aircraft used during taxiing or air/ground and ground/air transitions. The system groups together a set of devices for mapping the airport zone presenting the crew with a set of elements catalogued in a database and/or updated as a function of information received dynamically. The system group has control or monitoring of compliance with regulations and other mobile craft, consolidating the airport topological information, the ground control instructions and the applicable operational rules. The system groups have routing, that is preparation of the taxiing phase during an arrival or preparation for takeoff, by depicting the interactions with the ground control for receiving the taxiing instructions, and from the aircraft to the ground control to inform the same of the aircraft capabilities. The system groups have guidance in the form of instructions presented to the crew, and of automatic speed management capabilities, for managing emergency situations.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: September 20, 2011
    Assignee: Thales
    Inventors: François Coulmeau, Bernard Dubourg, Xavier Louis, Nicolas Marty
  • Publication number: 20110150657
    Abstract: A turbomachine fan rotor including a disk carrying blades with roots that are engaged in axial grooves of the disk, a spacer being interposed between the bottom of each groove and the corresponding blade root, the spacer including at its upstream end a nib for retaining the blade root, the nib including a downstream abutment face against which the upstream end of the blade root bears in event of a violent force being applied thereto, the abutment face being oblique relative to the axis of rotation of the rotor.
    Type: Application
    Filed: March 27, 2009
    Publication date: June 23, 2011
    Applicant: SNECMA
    Inventors: Xavier Louis Barthelemy Millier, Regis Eugene Henri Servant, Philippe Verseux
  • Publication number: 20110144456
    Abstract: A method for monitoring the blood pressure of a patient, comprising the following steps: determining a pulse arrival time signal from the patient 2 based on the pulse wave velocity method; determining an accelerometer signal from the patient 2; and triggering an additional measure or deriving a blood pressure value, taking into account the pulse arrival time signal and a DC component of the accelerometer signal. In this way, a possibility for monitoring the blood pressure of a patient is provided with which false alarms and/or unnecessary additional cuff-based blood pressure measurements can be avoided.
    Type: Application
    Filed: August 12, 2009
    Publication date: June 16, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRNICS N.V.
    Inventors: Jens Muhlsteff, Geert Guy Georges Morren, Xavier Louis Marie Antoine Aubert
  • Publication number: 20110119155
    Abstract: Apparatuses, methods, and systems pertaining to the verification of portable consumer devices for 3-D Secure Systems are disclosed. In one implementation, a verification token is coupled to a computer by a USB connection so as to use the computer's networking facilities. The verification token reads identification information from a user's portable consumer device (e.g., credit card) and sends the information to a validation entry over a communications network using the computer's networking facilities. The validation entity applies one or more validation tests to the information that it receives from the verification token. If a selected number of tests are passed, the validation entity sends a 3-D Secure datum to the verification token. The verification token may enter the 3-D Secure datum into a hidden field of a Purchase Authentication Page appearing on the computer's display.
    Type: Application
    Filed: November 4, 2010
    Publication date: May 19, 2011
    Inventors: Ayman Hammad, Patrick Faith, Krishna Prasad Koganti, Ben Rewis, Brendan Xavier Louis, Kevin Weller, Benedicto Hernandez Dominguez
  • Publication number: 20110118614
    Abstract: The present invention discloses a method and signal processing device (620) for analyzing a ballistocardiogram (BCG). The actual energy content of the cardiac part of the BCG in a predefined time window is determined and compared with a reference value. A difference between the actual energy content and the reference energy content exceeding a predefined threshold is indicative of the presence of an arrhythmia in the evaluated part of the BCG because the force exerted by an arrhythmic ventricular contraction, if at all present, is typically substantially smaller than the force exerted by a ventricular contraction of a regular heartbeat. This insight facilitates a more accurate detection of the presence of arrhythmias in a BCG compared to BCG detection schemes based on a heart rate analysis.
    Type: Application
    Filed: July 6, 2009
    Publication date: May 19, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Andreas Brauers, Xavier Louis Marie Antoine Aubert
  • Publication number: 20110054277
    Abstract: The invention also relates to an optical sensor for a photoplethysmography measurement, comprising a light unit 1 with a light emitter 2 for emitting light into tissue of a patient 8 and/or a light detector 3 for detecting a part of the emitted light after interaction with the tissue, wherein the light unit is embedded in an elastic material 4. The invention further relates to a device for contactless respiration monitoring of a patient 8, comprising: a distance sensor for consecutively detecting the temporal distance variations relative to the patient's chest 12, preferably based on electromagnetic waves; and a calculating unit for determining the breathing activity based on the detected temporal distance variations. The invention is especially useful for providing a reliable and easy to use possibility for simultaneously monitoring respiration action, blood pressure and heart rate with a handheld device which can be used for spot-checking the vital parameters of patients in hospitals.
    Type: Application
    Filed: May 4, 2009
    Publication date: March 3, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Robert Pinter, Jens Muehlsteff, Gerhard Spekowius, Donghai Yu, Sandrine Magali Laure Devot, Guido Josef Muesch, Xavier Louis Marie Antoine Aubert
  • Publication number: 20110034811
    Abstract: Insomnia is a prevalent sleep disturbance in the general population. As standard diagnostic method for assessing the nature and the severity of the sleep problem, a so-called sleep log or sleep diary, i.e. a questionnaire usually on paper, is used in most cases. The main drawback of this diagnostic tool is that its accuracy is affected by subjective bias of the patient, e.g. for patients it is often difficult to remember sleep and wake periods during the night correctly. The present invention proposes an automatic sleep log that uses vital body signs as input signals for assessing sleep and wake periods during the night. By using objective data, the diagnosis will be more accurate. Furthermore, this system can also be used to sleep restriction therapy, a non-pharmacological method to treat insomnia. Also in this application it can contribute to patients correctly applying this method and thus leading to a better medical outcome.
    Type: Application
    Filed: April 9, 2009
    Publication date: February 10, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Elke Naujokat, Frederique Kremer, Sandrine Magali Laure Devot, Xavier Louis Marie Antoine Aubert
  • Publication number: 20100094139
    Abstract: The present invention relates to a system (1) and method for obtaining cardiopulmonary and/or activity data of a patient (3) situated in a bed (2). In order to provide a simple and reliable technique for obtaining physiological data, in particular cardiopulmonary data and/or activity data, of a patient (3) situated in a bed (2), a method is suggested, comprising the steps of: providing a bed (2) with a bed structure (4) comprising at least one elastically deformable member (6), said member (69 being deformable by the patient (3) being situated in the bed (2); in case of deformation of said member (6), acquiring deformation data (25) of said member (6); and determining physiological data of said patient (3) using said deformation data (25).
    Type: Application
    Filed: February 25, 2008
    Publication date: April 15, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.
    Inventors: Andreas Brauers, Xavier Louis Marie Antoine Aubert, Ralf Dorscheid, Frank Johnen
  • Publication number: 20090018713
    Abstract: The invention relates to an integrated system carried onboard the aircraft used during taxiing or air/ground and ground/air transitions whose final objective is assistance to the crew in collaboration with the ground control authority. The system groups together a set of devices for mapping 30 the airport zone presenting the crew with the set of useful elements catalogued in a database and/or updated as a function of information received dynamically by the data link during flight preparation. The system group also has control 40 or monitoring of the compliance with the regulations and the other mobile craft in proximity, consolidating the topological information of the airport, the instructions of the ground control and the operational rules applicable.
    Type: Application
    Filed: April 21, 2008
    Publication date: January 15, 2009
    Applicant: Thales
    Inventors: Francois Coulmeau, Bernard Dubourg, Xavier Louis, Nicolas Marty
  • Publication number: 20090012661
    Abstract: The present invention relates to a device and method for changing the zones prohibited to an aircraft. The method comprises a phase of defining the geometry of the restricted-access zones and their access conditions which depend on the aircraft, a phase of characterizing the aircraft with respect to the access conditions for the zones and a phase of determining the zones to which the aircraft has no access.
    Type: Application
    Filed: November 29, 2006
    Publication date: January 8, 2009
    Applicant: THALES
    Inventor: Xavier Louis
  • Publication number: 20080306691
    Abstract: The present invention relates to a collision prevention device and method for a vehicle in motion on the ground. The collision prevention device 1 notably comprises: means for localizing obstacles 100, 101, 102, 103, 5, 6, 7; means for acquiring obstacle localization data 2, 4; means for localizing 10 the equipped vehicle; a collision prevention computer 3: combining the obstacle localization data coming from the acquisition means 2, 4; taking into account a description of a configuration of the equipped vehicle and also the localization of the equipped vehicle; detecting proximity conflicts between the equipped vehicle and the localized obstacles; generating alerts in the case of proximity of the equipped vehicle and a localized obstacle; generating at least one solution for resolving each conflict detected; presentation means 12, presenting warnings to a driver of the equipped vehicle.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Applicant: THALES
    Inventors: Xavier LOUIS, Didier Lorido, Nicolas Marty