Sextant Avionique

Patrick Lach

Bruno Barbier

Jean-Noel Perbet

Jean-Jacques Favot

Jean-Blaise Migozzi

Alain Leger

Jean-Claude Ebert

A method for the analysis of a message given by an interaction device to a system of man-machine dialog includes three consecutive steps, a first step of syntactic analysis, a second step of semantic analysis and a third step of execution analysis. The syntactic analysis assesses the conformity of a message given by the interaction device with a predefined form of dialog, the semantic analysis assesses the meaning of the request made by the operator engaging in dialog with the machine, and the execution analysis determines the performance of an action to be undertaken coming from the step of semantic analysis. The invention finds particular application in systems of man-machine dialog having many kinds of interaction such as speech, gesture, and expressions.

Method and device for the analysis of a message given by interaction

A device determining the orientation of a first solid body with respect to a second or reference solid body. Each body is filled with sets consisting of an optical source and a detector of optical radiation, so as to define at least two straight lines having a direction u and v joining two pairs of sources (S.sub.mi, S.sub.fj), the sources (S.sub.mi) relating to the first solid body and the sources (S.sub.fj) relating to the reference solid body. The device includes means to compute the parameters of orientation of the first solid body with respect to the reference solid body from the coordinates of the vectors u and v. Applications: Determining the orientation of a helmet of the pilot of an aircraft or helicopter with respect to a cockpit.

Optical device for determining the orientation of a solid body

The invention concerns a system for the management of an interaction system between a man (41) and a machine (12). Data input into the system are output by interaction devices (1, 2, 3, 4) from the man to the machine. At least two functions (7, 8, 9, 10) operate simultaneously on data (24, 25, 26), data input into the system being processed by a first function (7), the result of one function forming input data for the next function. The result of the last function (10) is output to interaction devices (11) from the system to the man. Functions are synchronized with each other by an exchange protocol.

Management method for a man-machine interaction system

A system of retro-illumination for optical valves integrated into a system of projection is constituted by a plane array of slotted fluorescent tubes, parallel to one another, associated with a plane array of longitudinal lenses parallel to the tubes and spaced out substantially by the same pitch. This system is a compact high-output system. It enables an easy gradation of the luminous level as well as the obtaining a trichromatic sequential retro-illumination without moving parts.

Light box for optical valve

An instrument system to make settings and verify that the pupil of an eye of a wearer of a helmet designed to receive a piece of optoelectronic equipment itself having a pupil truly coincides with the wearer's pupil, wherein the instrument system includes first and second optical devices whose position with respect to the helmet is fixed, and a first screen and a second screen E.sub.1 and E.sub.2, each including a reference-marking test pattern, the position of the helmet with respect to the wearer being accurate only if the image of the wearer's eye through the first optical means and the image through the second optical means, of a target on which the wearer's line of view is fixed, are respectively well-positioned with respect to the test patterns of the screens E.sub.1 and E.sub.2. In the preferred embodiment, the screens E.sub.1 and E.sub.2 are merged into a single screen E through an optical device partially common to the first and second optical devices.

Device to check the setting of the position and orientation of a helmet

The device includes a source of white images, a liquid crystal matrix to control the hue and a liquid crystal matrix to control the saturation of the images displayed.

Optimized color display device which uses a matrix to control the hue

The modulation by optical valves of three beam coming from a main or auxiliary primary beam of depolarized and collimated white light is achieved by means of two secondary beams of white light that are linearly polarized and perpendicular to each other. The undesirable color components are suppressed to constitute the three constituent color beams of the color image. Through the invention, the geometrical and spectral quality of the image is independent of the main or auxiliary primary beam and the image is as powerful as the one obtained by the standard method of projection. The auxiliary image can be used as a back-up or can be adapted to night-time projection.

Method and device for the projection of a color image resulting from a

The disclosure relates to the display, by projection on a screen, of an image managed by a computer system and to the input of data into the data-processing system by the shifting of a location marker in relation to the screen. A device for display by the projection of an image on a screen incorporates a surface detector of infrared radiation positioned behind the projection objective by means of a mirror separating the visible radiation and the infrared radiation. This display device is complemented by an infrared emitter with directional radiation, with which the observer traces a location marker on the screen which may take the form of a visible pointer overprinted on the image.

Combined device for screen display and for the detection of the position

In an optical device for determining parameters that give the orientation of any solid within a given space, a first solid is fitted with at least one single-beam device producing a beam of light rays substantially parallel to a direction u.sub.i known in a coordinate system R.sub.s bound to the first solid, said beam of light rays containing an item of information that enables direction u.sub.i to be determined, and a second solid is fitted with at least one elementary sensor capable of picking up light rays originating substantially from a direction parallel to V.sub.j known in a coordinate system R.sub.o ; each sensor includes means for reading the information in the beam it has picked up when directions u.sub.i and V.sub.j correspond and the information thus read is processed to extract the parameters giving the orientation of coordinate system R.sub.s relative to coordinate system R.sub.o. One valuable application of the invention relates to the orientation of the headset of an aircraft or helicopter pilot relative to the pilot's cabin.

Method and device for determining the orientation of a solid

The disclosed device is aimed at improving the light output of this type of device without impairing its homogeneity in colour and luminance while, at the same time, limiting the amount of space occupied. In such a device, three optical valves are placed before three faces of a recombiner cube. The means used to separate a beam of white light into three beams of coloured light consist of a divider cube. The intersections of the treated surfaces of the, two cubes are aligned, and these treated surfaces are in sets of two in one and the same plane. Furthermore, outside the cubes, the optical paths of the three beams are identical, so that the optical distances between the source of white light and the valves are themselves identical.

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Bordeaux, France

Patrick Lach