Patents Assigned to Sagem
  • Patent number: 9414532
    Abstract: The invention provides an electrical power module, including power transistors, and control components for controlling said power transistors, said module being cooled, in particular, by heat conduction. The module of the invention further includes a main substrate of the AMB/Si3N4 type carrying the power transistors, this main substrate itself constituting a heat-dissipating baseplate for dissipating the heat generated by the power transistors by being arranged in the module to be directly in contact with the carrier structure that provides cooling by conduction when said module is in place, and a ceramic substrate carrying the control components, this ceramic substrate itself being carried by the main substrate.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: August 9, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventor: Olivier Roche
  • Patent number: 9405580
    Abstract: The present invention relates to the field of real-time executives and their adaptation for secure execution on a multicore processor. There is defined, in addition to the level of certification intrinsic to each task, a level of security relating to the criticality of the execution of the instance of the task in its context and by a method of sequencing distributed over the various cores which make it possible to exchange, during each time interval, the information relating to the level of certification and to the level of security of each of the tasks getting ready to be launched. A decision is then taken on each core for launching the task envisaged as a function of the relevant information received from the other cores.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: August 2, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventor: Christian Valpard
  • Publication number: 20160216378
    Abstract: An inertial navigation system using loose coupling hybridization of inertial measurements by utilizing measurements supplied by a satellite-positioning receiver which utilizes signals sent by a plurality of satellites distributed across at least two separate satellite subsets and calculates at least two navigation solutions, each navigation solution being calculated by means of signals sent by the satellites of one of the subsets. The inertial navigation system includes a hybridization module using each of the at least two calculated navigation solutions. A satellite failure detector is configured to compare the hybrid navigation solutions and where applicable detect incoherence between said hybrid navigation solutions. The hybridization module is configured to stop execution of hybridization following detection of incoherence between the hybrid navigation solutions when the origin of the incoherence cannot be determined.
    Type: Application
    Filed: October 4, 2013
    Publication date: July 28, 2016
    Applicant: SAGEM DEFENSE SECURITE
    Inventor: Loic Davain
  • Patent number: 9396550
    Abstract: The invention relates to a method for updating and/or for initializing, in a system comprising an image sensor oriented towards the horizon such as a pair of binoculars coupled to a geographical north seeker incorporating a gyrometer, a value representative of the orientation of the image sensor with respect to north, in which the shift of two images arising from the digital image sensor is determined at a first instant and at a second instant that are distinct so as to construct an item of information representative of an angular movement, and in which this angular movement information is utilized to: update the value of orientation of the image sensor;—and/or to discriminate the movements of the image sensor with respect to the ground from the movements of the image sensor that are due to the rotation of the earth, in a process for initializing the value of orientation of the image sensor using a north seeker of gyroscopic or gyrometric type rigidly tied to the image sensor.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: July 19, 2016
    Assignee: Sagem Defense Securite
    Inventors: Georges-Olivier Reymond, Hervé Lamarre, Lionel Rosellini
  • Patent number: 9384414
    Abstract: A search for a target in a multispectral image is made more efficient and more user-friendly by combining a contrast optimization which is performed locally, with a presentation of a detection image which extends over the entire field of observation (10). The contrast is optimized inside a window (2) of reduced size relative to an image matrix (1) corresponding to the entire field of observation. This window may be moved in conjunction with the direction of observation (D), or it may be selected at will in the image matrix. The detection image may be renewed for each window used, or it may be shared by several windows.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: July 5, 2016
    Assignee: SAGEM DEFENSE SÉCURITÉ
    Inventors: Nicolas Roux, Guillaume Letellier, Hugues Berthaud, Jacky Lavoise, Michel Pealat
  • Patent number: 9360094
    Abstract: The invention relates to a mechanical member wherein a first part in contact with a second part movable relative to the first part, at least one of the parts including a coating of solid lubricant at least at contact zones between the first part and the second part, the solid lubricant being suitable on its own for lubricating the mechanical member. According to the invention, the mechanical member includes retention and capillary distribution means for distributing a fluid between the parts in such a manner as to form a film between said parts, which film can be pierced temporarily at each contact zone.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: June 7, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Julie Rafaitin, Etienne Merlet
  • Patent number: 9363917
    Abstract: An electrical housing includes power components grouped together in power modules and control components grouped together in a control module that is separate from the power modules.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: June 7, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Etienne Merlet, Jean-Eric Besold, Marie-Noëlle Besold-Etchechoury
  • Patent number: 9338931
    Abstract: An electronics card comprising a stack of printed circuit layers, each comprising an electrically insulating support having at least one conductive track extending thereon, and two electromagnetic shields extending respectively over a top face and over a bottom face of the stack, each shield comprising a grid and a plate that are superposed and electrically conductive, each extending over an electrically insulating support, and the conductive tracks being obtained by solid copper type etching. The invention also provides a device including such a card, and a method of protecting such a card of such a device against a lightning strike and against electromagnetic radiation.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: May 10, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Jérôme Pierson, Philippe Elie
  • Publication number: 20160122003
    Abstract: The invention relates to a fly-by-wire system which comprises: three-stage piloting control, each stage including a control computer suitable for determining the positions of the stick, and a monitoring computer capable of verifying all the pre-determined positions of the stick; three-stage control-surface position calculation, each stage including a control computer suitable for calculating the control-surface positions from encoded positions of the stick, and a monitoring computer capable of verifying all the calculated control-surface positions; a single unidirectional communication link connecting the control computer of the first piloting control stage to the control computer of the first control-surface position calculation stage; a single unidirectional communication link connecting the control computer of the second piloting control stage to the control computer of the second control-surface position calculation stage; and a single unidirectional communication link connecting the control computer of t
    Type: Application
    Filed: June 10, 2014
    Publication date: May 5, 2016
    Applicants: Sagem Défense Sécurité, Airbus Helicopters
    Inventors: Cédric Bara, Christophe Tuzi, Eric Bourgogne, Pascal Coppee, Yann Vandenbaviere
  • Patent number: 9326410
    Abstract: The invention relates to a communication cartridge (1) characterized in that—it is adapted to be integrated in a removable manner into a recess (25) of a host equipment (2), during normal operation, an external front part (13) of the cartridge being intended to be external to the recess (25) of the host equipment (2), and in that—it comprises at least one front port, placed in an internal space of the cartridge (1) and intended to cooperate with a wireless communication module also placed in the internal space of the cartridge (1), during normal operation, the front port being moreover adapted to have an adjustable position in the internal space, so that the module is at least partially positioned in the external front part (13) of the cartridge (1), during normal operation. The invention also relates to an equipment, an assembly and a system corresponding thereto.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: April 26, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Jean-Marie Courteille, Pierre Guivarch, Francois Guillot, Bruno Larois
  • Publication number: 20160111921
    Abstract: An electric motor stator wherein an annular central part and a yoke surrounding the central part, the central part includes a bundle of laminations delimiting poles, wherein the bundle of laminations includes a plurality of first laminations each containing portions forming a pole part that are joined by an annular internal portion, second laminations each forming a pole part being mounted between the first laminations, the first laminations being spaced apart from one another at a predetermined spacing according to a required inductance.
    Type: Application
    Filed: May 13, 2014
    Publication date: April 21, 2016
    Applicant: SAGEM DEFENSE SECURITE
    Inventors: Bernard RABRET, Jerome PIATON, Thierry BESSEDE
  • Patent number: 9303995
    Abstract: The invention relates to an gyroscopic sensor comprising a sensitive element designed to vibrate; an electrode carrier capable of carrying excitation/detection electrodes for exciting the sensitive element and for detecting the vibration of the sensitive element; and elements for supporting the electrode carrier. The supporting elements comprise a base made of a material having a density of less than 5 kg/dm3, and the square root of the ratio of Young's modulus divided by said density is greater than 9 GPa1/2.dm3/2/kg?1/2.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: April 5, 2016
    Assignee: Sagem Defense Securite
    Inventors: Jean-Baptiste Eudier, Christophe Maerky, Thierry Bonjour
  • Patent number: 9291714
    Abstract: According to a first aspect, the invention relates to a method for checking the integrity of position information output by a satellite (GNSS) positioning device (1) including a bank (3) of Kalman filters each producing a navigation solution (dX0, dXi, dXn) from raw measurements of signals transmitted by the satellites, characterized in that the method comprises the steps of, for each filter in the bank: (i) correcting the navigation solution produced by the filter according to an estimate of the impact of a failure of a satellite on the navigation solution; (ii) calculating a cross-innovation reflecting the deviation between an observation corresponding to a raw measurement from a satellite not used by the filter and an a posteriori estimate of said observation from the navigation solution produced by the filter and corrected in accordance with step (i); and (iii) performing a statistical test of the cross-innovation in order to declare whether or not the satellite, the raw measurement of which is not used b
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: March 22, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventor: Sebastien Vourc'h
  • Patent number: 9284044
    Abstract: The invention concerns a device for the active control of a force feedback for a control device, comprising a calculator, a position sensor (3) configured to provide the calculator with an effective position signal (Pm) of the control device, and an actuator (2) ensuring the displacement of the control device at the command of the calculator, the calculator being configured to use the effective position signal and modulate a setpoint current (lc) delivered to the actuator to ensure the position feedback of the displacement of the control device, characterized in that the calculator is further configured to create at least one saturation terminal (Bsat+, Bsat?) according to a predetermined function of the value of the effective position signal of the position/force law kind, and to saturate the setpoint current using the at least one saturation terminal.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: March 15, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Geoffrey Beggiora, Jerome Piaton, Guillaume Mercier, Yann Vendenbaviere
  • Patent number: 9285482
    Abstract: A method for monitoring the integrity of position information outputted by a hybridization device that includes a bank (3) of Kalman filters, each filter developing a hybrid navigation solution from inertial measurements calculated by a virtual platform (2) and from raw measurements of signals transmitted by a satellite constellation which are outputted by a global navigation satellite system (GNSS). The method includes, for each satellite of the constellation of calculating a cross-innovation of the satellite that reflects the deviation between an observation, corresponding to a raw measurement from the satellite, and an a posteriori estimation of said observation that is developed through a Kalman filter and does not use the raw measurement from the satellite; carrying out a statistical test of the cross-innovation to ascertain whether or not the satellite is malfunctioning.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: March 15, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Sébastien Vourc'h, Victor Mauger
  • Patent number: 9285480
    Abstract: The invention relates to a method for tracking the carrier phase of a signal received from a satellite by a carrier using a carrier loop of the carrier phase, said signal being acquired by a navigation system of the carrier, said navigation system including a receiver for location by radio navigation, and a self-contained unit, wherein the receiver is suitable for acquiring and tracking the phase of the carrier of the signal from the satellite.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 15, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventor: Jean-Philippe Lebrat
  • Patent number: 9279682
    Abstract: An inertial unit comprising an inertial core (3) that is connected to a control unit (50) and that includes three gyros (9, 10, 11) that are mounted relative to one another so as to have sensing axes (X, Y, Z) that are substantially perpendicular to one another, the gyros being vibrating axisymmetric gyros with hemispherical resonators, the unit being characterized in that the core is mounted on a carousel (2) arranged to drive the inertial core in rotation about an axis of rotation (4) at at least one frequency that corresponds to a minimum for spectral error density of the gyros. An angle-measurement method making use of the unit.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: March 8, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Alain Renault, Christian Lignon, Etienne Brunstein
  • Patent number: 9281973
    Abstract: A method for demodulating at least one received frame is provided, where the frame includes of a succession of bits coded according to a Manchester code. The method includes the steps of: generating an interruption at least at each appearance of a rising and/or falling edge of the frame of coded bits; determining the time between each interruption from at least one first counter; reinitializing the demodulation of the frame as soon as one of the determined times is less than a first predetermined value or greater than a second predetermined value, the first and second predetermined values being dependent on the duration of a bit coded according to the code; and demodulating, for each determined time, if the determined time is greater than the first predetermined value and is less than the second predetermined value, at least one binary value of the frame from the determined time.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: March 8, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Thanh-Truoc Duong, Frédéric Bocage
  • Patent number: 9276395
    Abstract: The invention relates to an electrical circuit adapted for cutting off an electrical supply to an electrical equipment, said electrical circuit receiving as input at least two discrete electrical signals xi, i=1, N, the electrical circuit comprising: —a voltage source; —a number N>1 cutoff units Ui connected together, i=1, . . . , N in series between the voltage source and the electrical equipment, and a last cutoff unit UN being connected to the electrical equipment, each cutoff unit Ui exhibiting an open or closed state as a function of an electrical control signal; the cutoff units Uj, j=1, N?1 upstream of the last cutoff unit UN each being controlled by a distinct discrete electrical signal xj, j=1, . . . , N?1, the last cutoff unit being controlled as a function of the state of the cutoff units Uj, j=1, . . . , N?1 upstream and a discrete electrical signal xN different from that controlling the upstream cutoff units Uj, j=1, N?1.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: March 1, 2016
    Assignee: SAGEM DEFENSE SECURITE
    Inventors: Patrick Valette, Francois Guillot
  • Patent number: 9273241
    Abstract: The invention relates to a high-resolution imaging system for recording images of the same scene, that are sampled in a complementary manner. To this end, an image filter (2) is arranged in an intermediate focusing plane (PI), and a matrix (3) of microlenses is arranged at a distance from the image filter, with each microlens that is associated with an opening (O2) of the image filter. An image detection matrix (9) is then optically conjugated with the microlens matrix. The system also comprises a device for moving an intermediate image in relation to the image filter (2). Such an imaging system is especially suitable for recording high-resolution infrared images.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: March 1, 2016
    Assignee: SAGEM DEFENSE SÉcuritÉ
    Inventors: Christian Chomont, Francoise Cau, Michel Pealat, Vincent Duriaud