Thales

Siegfried Rouzes

Bruno Barbier

Laurent Potin

Bruno Aymeric

Philippe Coni

Emmanuel Monvoisin

Lilian Lacoste

Xavier Servantie

Jean-Pierre Gerbe

Alexandre Fine

Matthieu Grossetete

Jean-Louis Lescourret

Johanna Lux

Frédéric Renaud

Jean-Christophe Abadie

Arnaud Petitdemange

Philippe Neto

Sébastien Ellero

Bruno Capelle

Pierre Raybaut

David Deceneux

Sébastien Pelletier

This method, implemented in a mounted information display device, which incorporates a main sensor and an inertial sensor, and which determines the positioning by a hybrid inertial method including determining a calculated position by a main method using data acquired by the main sensor and determining a succession of estimated positions using the calculated position and data acquired by the inertial sensor, includes: obtaining at a first calculation time instant T1 a first estimated position of the device at a reference time instant, calculated by the hybrid inertia method; obtaining at a second time instant T2 a second estimated position of the device at the same reference time instant, calculated by the main method; comparing a difference between the first and second positions and a tolerance threshold; and, if the difference is less than the threshold, validating the positioning calculation by the hybrid inertial method, otherwise raising an alert.

Method and device for controlling the positioning of a mounted information display device

A touch surface includes an array of rows of electrodes, an input point on a row for injecting an input voltage (V), measuring an output voltage (V) at a second point in the row, p being the number of pitch spacings of the array separating the two points, the portion of the array between the first point and the second point being akin to an electric dipole of resistance (R(p)) and of capacitance (C), the output voltage (V) being equal to the product of the input voltage (V) and a transfer function represented by a complex function (H). The measurement includes extracting the amplitude (G) and the phase (&#x3c6;) from the transfer function; and calculating a hybrid function (S(G, &#x3c6;)) of the amplitude and of the phase, the hybrid function minimizing a sum (&#x3a3;) defined by 

Touch surface with hybrid touch detection

The invention relates to a method for verifying a character to be displayed on a screen, compared to a reference character. The character to be displayed and the reference character each comprise at least several characteristic points. The method comprises: The character to be displayed is considered correct only if the computed deviation is below the predetermined threshold.

Method and electronic device for verifying a character to be displayed on a screen compared to a reference character, associated computer program product and graphics processor

A method for dual harmonization of a DDP posture-detecting subsystem integrated into a worn/borne head-up viewing system includes a first step of measurements of N rotation matrices {circumflex over (K)}for detecting the posture of a head corresponding to a set of different targeting actions Vi, in which measurements one or more different preset elements of pilot/driver information displayed in the viewing device Dare superposed or aligned with one or more corresponding landmarks of the real outside world; then a second step of conjointly calculating the relative orientation matrix {circumflex over (R)}(S1/v) of the DDP tracking first element S1 with respect to the viewing device Dand/or the relative orientation matrix {circumflex over (R)}(ref/S2) of the external reference device Dwith respect to the DDP fixed solid second element S2 to respectively be the right-side bias rotation matrix {circumflex over (D)} and the left-side bias rotation matrix &#x11c;, which are solutions of the system of dual harmonization equations: &#xdb;=&#x11c;&#xb7;{circumflex over (K)}&#xb7;{circumflex over (D)}, i varying from 1 to N.

Method for dual harmonization of a DDP posture-detecting subsystem integrated into a worn/borne head-up viewing system

A dual harmonization method for a head-worn display system for making the display of piloting information of an aircraft conform with the outside real world includes a step of acquisition of N measurements {circumflex over (K)}of head postures by a series of different sightings Vi, each of which aligns a sighting pattern, situated at a different fixed position Pi on the display Dwith a sighting vector that is a function of the position Pi, then a step of computation of the matrix of relative orientation Mbetween the display Din a tilted position of engagement in the field of view and the tracking first element Das the right matrix {circumflex over (D)} that is the solution of the dual harmonization system of equations &#x11c;&#xb7;{circumflex over (K)}&#xb7;{circumflex over (D)}&#xb7;{right arrow over (x)}={right arrow over (y)}for i varying from 1 to N, the vector {right arrow over (y)} denoting the vector in the inertial reference frame of the platform corresponding to the target point targeted in the outside real world and being unknown; and the left matrix &#x11c; being the matrix Mof relative orientation between the fixed second element Dand the attitude inertial device D, which is potentially incorrect but assumed constant as a function of time, and which, when it is unknown, requires at least four measurements {circumflex over (K)}. A head-up display system is configured to implement the dual harmonization method.

Dual harmonization method and system for a head-worn display system for making the display of piloting information of an aircraft conform with the outside real world

A dual harmonization method for a worn head-up display system for making the display of piloting information of an aircraft on a display conform with the outside real world includes a step of acquisition of N measurements {circumflex over (K)}of head posture detection by a series of sightings Vi corresponding to images oriented according to orientations Oi of one and the same photograph taken by a camera, secured to and aligned with the attitude inertial device D, then a step of joint computation of the matrices of relative orientation Mand Mas joint solutions of the dual harmonization &#xdb;=&#x11c;&#xb7;{circumflex over (K)}&#xb7;{circumflex over (D)}, i varying from 1 to N, in which &#xdb;is the transpose of the matrix M(image(i)/0) of relative orientation of the image(i) of rank i relative to the display D, with Mand Mrespectively equal to the right and left matrices {circumflex over (D)} and &#x11c;. A worn head-up display system is configured to implement the dual harmonization method.

Dual harmonization method and system for a worn head-up display system with a removable attitude inertial device in the cockpit

A method is provided for two-dimensional graphic representation on an aircraft display screen of an image or of a symbol or of a symbology (P) whose three-dimensional coordinates in a terrestrial reference frame are known. The graphic representation of the object or of the symbol is stretched in a vertical axis by a constant factor (&#x3b1;) lying between 1.0 and 1.2, the stretching having, for its neutral plane, the local horizontal geographic plane containing the aircraft. Furthermore, when the symbology is a pitch scale consisting of graduations, two successive graduations being separated by a constant angular value, the graphic representations of two successive graduations of the pitch scale are separated by a constant distance on the display screen.

Method for computing and displaying piloting information including a 'relief factor'

The general field of the invention is that of systems for detecting the posture of a moving object. The system may include a fixed electro-optical device of known orientation comprising an emission source, an image sensor and image analysis means, and an optical assembly comprising an optical retroreflector arranged on the moving object. The optical retroreflector of the system is an optical sphere of variable index comprising a transparent hemisphere and a reflecting hemisphere. It comprises a meshing comprising at least three opaque wires, of small thickness and known geometrical arrangement. The image of the retroreflector lit by the source forms a reflection on the image sensor, said reflection comprising at least the two images of the shadow of one of the three wires. The image analysis means detect the orientation of the leak line given by said images, said orientation being representative of one of the parameters of the posture of the moving object.

Posture detection system with retroreflector comprising a wire-meshing

The general field of the invention is that of methods for three-dimensional conformal representation of a terrain. The method is used in a piloting and navigation assistance system of an aircraft. The assistance system comprises a navigation system, a cartographic database, electronic calculation means a meteorological database and a display system allowing the superimposition of synthetic images on the exterior. The method comprises the following steps: Step 1: Calculation, for a determined position of the vehicle, of the terrain perceptible through the display system; Step 2: Selection of a part of the said terrain as a function of a distance or of an altitude or of a range of altitudes; Step 3: Calculation of a three-dimensional conformal cartographic representation of the said selected part of the terrain; and Step 4: Display of the said cartographic representation by the display system.

Method for synthetic three-dimensional conformal representation of terrain cartography as a function of visibility

The general field of the invention is that of touchscreen devices with projected capacitive detection comprising a matrix touchpad comprising a plurality of conducting rows and of conducting columns, the matrix touchpad linked to an emission voltages electronic control system and a reception voltages electronic system. The emission voltages electronic control system generates two periodic emission voltages emitted at two different frequencies. The analysis of the reception voltages, by the reception voltages electronic system, makes it possible to determine the positions of two simultaneous presses on the touchpad, including when the two presses are done on rows or columns that are close. The determination of the presses is performed essentially by calculating the barycenters of the troughs of the reception voltages.

Multitouch tactile device with multi frequency and barycentric capacitive detection

The general field of the invention is that of systems for detecting the posture of a mobile object in space. The system according to the invention comprises an electro-optical device comprising a light source, a photoreceptor and means of analysis, and a retro-reflecting cube corner disposed on the mobile object. The cube corner comprises a mask disposed on its entry face. The source emits a parallel or almost-parallel pencil beam. The electro-optical device comprises means for deviating, about a fixed point, the said pencil beam of light by an angle varying as a function of time. The photoreceptor is configured for receiving the pencil beam of light retro-reflected by the cube corner. The means of analysis are configured in such a manner as to determine, based on the signal coming from the photoreceptor, the position of a number of points representative of the borders of the mask and, using this positional information, the posture of the cube corner in space.

Optical system for posture detection comprising a scanning light source and a cube corner

The general field of the invention is that of systems for detecting the posture of a mobile object. The systems according to the invention comprise a fixed electro-optical device comprising an emission source and a photosensitive sensor. The optical corner cube is arranged on the mobile object. The entry face of the corner cube has a predetermined geometry, the light coming from the source and reflected back by the corner cube forming a luminous contour on the matrix sensor. The fixed electro-optical device comprises an optical element with a known shape and location, which is placed in the vicinity of the said source and is arranged so as to form a dark zone in the central part of the luminous contour. The detection system comprises analysis means determining the position and the orientation of the mobile object from knowledge of the vanishing points of the luminous contour and the position and shape of the dark zone.

Optical system for measurement of orientation and position comprising a point source, central mask, photosensitive matrix sensor and corner cube

The overall field of the invention is that of systems for detecting the posture of a moving object in space. The device according to the invention comprises: a fixed electrooptical device comprising a point emission source, a telecentric lens comprising a projection lens, a reception lens and a semireflective optical element and a photosensitive matrix-type sensor, the point emission source being arranged at the common focal point of the projection lens and of the reception lens by reflection or transmission through the semireflective optical element, and; an assembly comprising at least three corner cube retroreflectors which are arranged on the moving object. The main application of this device is the detection of the orientation of an aircraft pilot helmet.

Optical system for measuring the orientation of a helmet using corner cubes and a telecentric emission lens

The field of the invention is that of optical systems for detecting the posture of a mobile object in space. The system comprises an electro-optical fixed device of known orientation comprising a first point emission source, a telecentric emission/reception optic and a photosensitive matrix sensor. An assembly comprising an optical cubic wedge is disposed on the mobile object. The input face of the cubic wedge comprises a mask in the shape of a parallelogram, each side of the parallelogram comprising a geometric marking making it possible to identify it, the image of the mask projected on the photosensitive matrix sensor, by reflection on the faces of the cubic wedge, being the intersection of the projection of the mask and of the projection of its image inverted with respect to the centeR of the cubic wedge. Analysis of this image makes it possible to determine the orientation of the cubic wedge.

Optical system for measuring orientation with cubic wedge and mask

The general field of the invention is that of systems for the optical detection of the orientation and the position of a mobile object in space. The system comprises a fixed electro-optical device comprising a transmission point source, image analysis means and an optical cube corner disposed on the mobile object. The input surface of the cube corner comprises a polygonal-shaped mask, the sides of which comprise a geometric marking to identify them. The fixed electro-optical device comprises photosensitive means close to the point source and disposed in two different recording planes and recording two luminous shapes in perspective of the mask obtained by reflection on the surfaces of the cube corner. The image analysis means comprise means for determining the vanishing points of the two luminous shapes in the two recording planes, the knowledge of the four vanishing points enabling the determination of the position and orientation of the optical cube corner in relation to the fixed electro-optical device.

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Le Haillan, France

Siegfried Rouzes