Abstract: The invention relates to the management of binocular rivalry, and by extension of attentional rivalry, in a display system. A method of the invention may include determining visual surroundings parameters; determining a risk of visual suppression by binocular rivalry between an element of the visual surroundings and an element displayed by the display device on the basis of the visual surroundings parameters; and, on the basis of the determined risk, adjusting the display.

Abstract: The management of binocular rivalry, and by extension of attentional rivalry, in a display system is provided. The method includes the steps of determining visual surroundings parameters; determining a risk of visual suppression by binocular rivalry between an element of the visual surroundings and an element displayed by the display device on the basis of the visual surroundings parameters; and, on the basis of the determined risk, adjusting the display. Developments of the invention describe the management of the luminance, of the chrominance and of the geometry of the displayed elements. Optimizations in the field of avionics are described. Software and system aspects are described (e.g. brightness sensors and/or gaze-tracking sensors, monocular system).

Abstract: A data-input device comprises a designator able to point to a position on a screen of a computer system to which the device is intended to be connected and a body intended to be fixed to a workstation, the body comprising a support zone intended to support the hand of an operator as he manipulates the designator. The device further comprises a knob arranged in such a way that it can be manipulated by the fingers of the operator, his hand remaining supported on the support zone. The knob is configured to allow at least two distinct data selections of which one is a choice of values in a series and one is a binary acquisition in relation to the chosen value.

Abstract: Hover hold aid systems for helicopters are described. One system comprises a navigation system that determines a helicopter's current position in relation to a terrestrial frame of reference and a helmet-mounted visualization system comprising a helmet-mounted display (HMD) and at least one symbol generation processing device that generates symbols in the HMD at fixed positions in relation to the terrestrial frame of reference. The symbols are displayed in an angular field of display of the HMD. When the helicopter has to home or stay in a vicinity of a predetermined position, the at least one symbol generation processing device calculates a first and a second representation containing a first target and a second target referenced in the terrestrial frame of reference. The first target is located in the direction of the homing course to the predetermined position. The second target is located in a direction perpendicular to this same course.

Abstract: A method of diagnosis of a drift of at least one injector of an injection system with a common ramp, which includes a pressure regulating control unit and a richness regulating control unit, the pressure and richness regulating control units being driven by an electronic computer according to values of pressure setpoint and of richness setpoint which are recorded in the computer, the method of diagnosis including checking for existence of a drift of the pressure regulating control and checking for existence of a drift of the richness regulating control when the two units operate in closed loop, the drift of the injector being established upon the joint detection of a drift of the pressure regulating control unit and of a drift of the richness regulating control unit.

Abstract: The general field of the invention is that of methods for managing interaction symbols in a viewing system including an associated viewing device comprising a touch surface and displaying, managing and controlling means. The method according to the invention is implemented so as to manage graphical interactors allowing the functions of a discrete or continuous-state rotary control knob to be carried out. It comprises the following steps: Step 1: in the absence of tactile stress, displaying a symbol representative of the current state of said rotary control knob; Step 2: on a first tactile stress, causing interaction icons dedicated to said rotary control knob and surrounding said symbol to appear; Step 3: by maintaining and moving the tactile stress over the various interaction icons, changing the current state of said rotary control knob; and Step 4: by stopping the tactile stress, validating the new current state and causing the interaction icons to disappear.

Abstract: The general field of the invention is that of display systems comprising means for generating images of a predetermined object and a display device comprising a semi-transparent projection screen. The system according to the invention is intended to be used simultaneously by at least two observers. The image generating means comprise features arranged to generate a first image of a first object and a second image of a second object, and the display system comprises two pairs of glasses worn by the first and second observer, arranged such that the first observer sees only the first image and not the second image and the second observer sees only the second image and not the first image, each pair of glasses allowing the exterior light to pass through. The first object and the second object may be identical.

Abstract: A method determining a rate of recirculated exhaust gas (EGR rate) at an inlet of a cylinder of an internal combustion engine at a moment t, the exhaust gas being conveyed in a recirculation duct connecting an exhaust line of the engine to an intake line, and the EGR rate being equal to the ratio between flow rate of the recirculated gas and total gas flow rate in the intake line at a location of the intake line in question and at the moment in question. The method: a) determines at which moment t_intro preceding the moment t the gas, having arrived at the inlet of the cylinder at moment t, was fed into the intake line; b) determines the EGR rate at an outlet of the recirculation line to the intake line at the moment t_intro; and c) determines the EGR rate at the inlet to the cylinder at moment t based on the EGR rate at the outlet of the recirculation line to the intake line at moment t_intro, as determined in b).

Abstract: A data-input device comprises a designator able to point to a position on a screen of a computer system to which the device is intended to be connected and a body intended to be fixed to a workstation, the body comprising a support zone intended to support the hand of an operator as he manipulates the designator. The device further comprises a knob arranged in such a way that it can be manipulated by the fingers of the operator, his hand remaining supported on the support zone. The knob is configured to allow at least two distinct data selections of which one is a choice of values in a series and one is a binary acquisition in relation to the chosen value.

Abstract: A device for controlling fuel injection in an internal combustion engine of an automobile, the internal combustion engine being connected at an inlet thereof to a fresh air intake pipe and at an outlet thereof to an exhaust gas discharge pipe including a catalytic converter, an exhaust gas partial recirculation circuit connecting the discharge pipe to the fresh air intake pipe. The device includes a mechanism determining the amount of unburned fuel in the exhaust gases, a mechanism determining the amount of fresh air taken into the internal combustion engine, and an electronic controller determining the amount of fuel to be injected depending on signals received of the determined amount of unburned fuel and the determined amount of fresh air taken in.

Abstract: A method of diagnosis of a drift of at least one injector of an injection system with a common ramp, which includes a pressure regulating control unit and a richness regulating control unit, the pressure and richness regulating control units being driven by an electronic computer according to values of pressure setpoint and of richness setpoint which are recorded in the computer, the method of diagnosis including checking for existence of a drift of the pressure regulating control and checking for existence of a drift of the richness regulating control when the two units operate in closed loop, the drift of the injector being established upon the joint detection of a drift of the pressure regulating control unit and of a drift of the richness regulating control unit.

Abstract: A method for controlling injection of fuel upon start-up of a combustion engine including determining a set point quantity of fuel on start up, which is dependent on a difference between a set point acceleration of the engine and an instantaneous acceleration of the engine. An electronic control unit and a motor vehicle can execute the method.

Abstract: The general field of the invention is that of methods providing a secure control for an appliance by means of a visualization device having a tactile surface capable of detecting several simultaneous touches. The method according to the invention comprises: A first step of displaying on the visualization device a first symbol representing the control in a locked state; A second step of displaying, after a first touch on the tactile surface, a second symbol representing an “unlocking” gesture; A third step of performing said “unlocking” gesture; A fourth step of validating the command by two simultaneous touches at the sites of the first and second symbols; A fifth step of changing the appearance of the first symbol representing the control to be activated in an unlocked and activated state.

Abstract: The general area of the invention is that of hover hold aid systems for helicopters. The system comprises navigation means; a helmet-mounted visualization system containing a helmet-mounted display incorporated in the pilot's helmet and means for generating symbols in said helmet-mounted display at fixed positions in relation to a terrestrial frame of reference, said symbols being displayed in the angular field of display of the helmet-mounted display. When the helicopter has to home or stay in the vicinity of a predetermined position, the symbol generation means calculate a first and a second representation containing a first target and a second target referenced in said terrestrial frame of reference, the first target located in the direction of the homing course to the predetermined position, the second target located in a direction perpendicular to this same course.

Abstract: The general field of the invention is that of visualisation systems for an aircraft comprising a semi-transparent screen and electronic means suitable for generating a symbology displayed on said semi-transparent display screen, the symbology representing a parameter necessary for the piloting or navigation of the aircraft. The symbology according to the invention is partially or totally located on the periphery of the screen and comprises at least one moving pattern or a plurality of moving patterns, the speed and direction of the movement representing the relative difference between the value of the parameter at the present time and a reference value of said parameter, the patterns being immobilised when the value of the parameter at the present time attains said reference value. Different representations and different movements of the patterns are possible.

Abstract: A system and method for authorizing stoppage of piloting tasks performed by at least one pilot of an aircraft equipped with automatic piloting means is disclosed. A duration for which the stoppage is authorized is determined, the duration being determined based on the calculation of an instant of commencement of a next action, and the next action being an action not yet carried out that must be carried out first by the pilot. The duration is then displayed.

Abstract: A method determining a rate of recirculated exhaust gas (EGR rate) at an inlet of a cylinder of an internal combustion engine at a moment t, the exhaust gas being conveyed in a recirculation duct connecting an exhaust line of the engine to an intake line, and the EGR rate being equal to the ratio between flow rate of the recirculated gas and total gas flow rate in the intake line at a location of the intake line in question and at the moment in question. The method: a) determines at which moment t_intro preceding the moment t the gas, having arrived at the inlet of the cylinder at moment t, was fed into the intake line; b) determines the EGR rate at an outlet of the recirculation line to the intake line at the moment t_intro; and c) determines the EGR rate at the inlet to the cylinder at moment t based on the EGR rate at the outlet of the recirculation line to the intake line at moment t_intro, as determined in b).

Abstract: A device for controlling fuel injection in an internal combustion engine of an automobile, the internal combustion engine being connected at an inlet thereof to a fresh air intake pipe and at an outlet thereof to an exhaust gas discharge pipe including a catalytic converter, an exhaust gas partial recirculation circuit connecting the discharge pipe to the fresh air intake pipe. The device includes a mechanism determining the amount of unburned fuel in the exhaust gases, a mechanism determining the amount of fresh air taken into the internal combustion engine, and an electronic controller determining the amount of fuel to be injected depending on signals received of the determined amount of unburned fuel and the determined amount of fresh air taken in.

Abstract: A method for monitoring the pressure in a tire of a vehicle wheel, including measuring the wheel speed, to detect a loss of pressure using inexpensive components, and to produce a highly robust diagnosis due in particular to: calculating a first sum of the speeds of the left front wheel and right rear wheel and a second sum of the speeds of the right front wheel and left rear wheel, calculating a difference equal to the first sum minus the second sum, and comparing an absolute value of the difference with a threshold, such that an absolute value greater than the threshold denotes detection of a loss of pressure in one of the tires.