Systems, methods, and computer readable media for protecting an operator against glare

Patent metadata

Field	Value
Publication number	US-9566946-B2
Application number	US-201313944567-A
Country	US
Kind code	B2
Filing date	Jul 17, 2013
Priority date	Jul 17, 2012
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

Systems, methods and computer readable media for protecting a pilot of an aircraft or an operator of a vehicle against glare from a luminous object. A system for attenuating glare experienced by an operator of a vehicle is provided with a transparent display unit or screen with adjustable pixels that is interposed between an operator of a vehicle and all or part of a windshield of the vehicle, and a device to control pixel intensity to attenuate glare from a luminous object. A system is provided with a positioning module for determining the position of the operator inside the vehicle, and for determining the position of at least one luminous object outside the vehicle that is a source of glare experienced by the operator. A system is provided with a computing device for computing a glare line between the operator and luminous object and the position of the display screen where the glare line intersects the display unit.

First claim

What is claimed is:

1. A system for attenuating glare, comprising:
a display unit interposed between an operator of an aircraft and all or part of a windshield of the aircraft;
a controller for controlling the display unit,
a positioning module for determining a position of the operator inside the aircraft, and a positioning controller, wherein the positioning controller is in communication with the positioning module, wherein the positioning controller comprises a global positioning system for determining a position of at least one luminous object outside the aircraft that is a source of glare, wherein the positioning controller is configured to determine the position of at least one luminous object outside the aircraft in a first coordinate reference frame, wherein the origin of the first coordinate reference frame coincides with the location of the operator inside the aircraft, wherein the positioning controller is configured to determine the position of at least one luminous object outside the aircraft in a second coordinate reference frame, wherein the origin of the second coordinate reference frame coincides with the location of the global positioning system, and wherein the position of the luminous object is then calculated with respect to the first coordinate reference frame through a coordinate transformation with the second coordinate reference frame;
a computing platform for computing a glare line between the operator and luminous object and the position of the display unit where the glare line intersects the display unit; and
wherein the computing platform is configured to communicate to the controller the position of the display unit where the glare line intersects the display unit and the controller is configured to cause the display unit at the position of the intersection to darken thereby attenuating the glare.

2. The system of claim 1 , wherein the positioning controller comprises a first camera, wherein the camera determines the location of the luminous object outside the aircraft in a first coordinate reference frame on the basis of data of images provided by the said first camera, wherein the origin of the first coordinate reference frame coincides with the location of the operator inside the aircraft.

3. The system of claim 2 , wherein the computing platform determines the position of the luminous object outside the aircraft in a third coordinate reference frame having an origin in the first camera, and then determines the position of the luminous object outside the aircraft in a first coordinate reference frame having an origin in the operator through a coordinate transformation.

4. The system of claim 2 , wherein the computing platform performs a threshold analysis of the images provided by the first camera based on a predetermined grey level threshold, wherein the glare from a luminous source is attenuated when the threshold level is exceeded.

5. The system of claim 2 , wherein the positioning module for determining the position of at least one luminous object outside the aircraft further comprises a second camera.

6. The system of claim 1 , wherein the positioning controller comprises a camera having eye or facial recognition capabilities to determine the position of the operator of the aircraft.

7. The system of claim 1 , wherein the positioning controller comprises a gyroscope or accelerometer within a head wearable member worn by the operator of the aircraft to determine the position of the operator of the aircraft.

8. The system of claim 1 , further comprising a photodetection device for detecting the presence of a luminous object outside the aircraft, wherein the photodetection device is configured to produce a voltage amplitude proportional to the brightness of the luminous object, wherein the pixel controller is powered up only on condition that the voltage produced by the photodetection device is greater than a predetermined detection threshold.

9. The system of claim 1 , wherein the display unit further comprising a photovoltaic film configured to detect light from an exterior of the aircraft, wherein the display unit darkens to control the luminosity of the interior of the in accordance with the brightness of the exterior of the aircraft.

10. An aircraft or spacecraft equipped with the system of claim 1 .

11. A method for attenuating glare experienced by an operator of an aircraft, the method comprising:
determining an aircraft operator position;
determining a position of a luminous object that is a source of glare by communicating with a global positioning system, wherein determining the location of the luminous object using a global positioning system comprises communicating with one or more global positioning satellite servers and determining the position of at least one luminous object outside the aircraft in a first coordinate reference frame, wherein the origin of the first coordinate reference frame coincides with the location of the operator inside the aircraft, determining the position of at least one luminous object outside the aircraft in a second coordinate reference frame, wherein the origin of the second coordinate reference frame coincides with the location of the global positioning system, and wherein the position of the luminous object is then calculated with respect to the first coordinate reference frame through a coordinate transformation with the second coordinate reference frame;
calculating a glare line between the aircraft operator position and the position of the luminous object; and
darkening a display unit at an intersection of the glare line and the display unit to reduce glare effects perceived by the operator.

12. The method of claim 11 , wherein determining the aircraft operator position comprises calculating the location of a midpoint between the eyes of the operator using a positioning controller equipped with eye-tracking technology, face-tracking technology, or a camera.

13. A method for attenuating glare experienced by an operator of an aircraft, the method comprising:
determining an aircraft operator position by using one or more gyroscopes and/or accelerometers;
determining a position of a luminous object that is a source of glare by communicating with a global positioning system, wherein determining the location of the luminous object using a global positioning system comprises communicating with one or more global positioning satellite servers and determining the position of at least one luminous object outside the aircraft in a first coordinate reference frame, wherein the origin of the first coordinate reference frame coincides with the location of the operator inside the aircraft, determining the position of at least one luminous object outside the aircraft in a second coordinate reference frame, wherein the origin of the second coordinate reference frame coincides with the location of the global positioning system, and wherein the position of the luminous object is then calculated with respect to the first coordinate reference frame through a coordinate transformation with the second coordinate reference frame;
calculating a glare line between the aircraft operator position and the position of the luminous object; and
darkening a display unit at an intersection of the glare line and the display unit to reduce glare effects perceived by the operator.

14. The method of claim 13 wherein the one or more gyroscopes and/or accelerometers are positioned within a head wearable member of the aircraft operator.

15. The method of claim 14 wherein the head wearable member comprises a helmet or audio headset.

16. A non-transitory co

Assignees

• Airbus Sas

Inventors

• Loubiere Vincent

Classifications

• B64D47/00

  Equipment not otherwise provided for · CPC title

• B64C1/1476 Primary

  Canopies; Windscreens or similar transparent elements · CPC title

• G02B2027/0118

  comprising devices for improving the contrast of the display / brillance control visibility · CPC title

• G02B2027/014

  comprising information/image processing systems · CPC title

• B60R99/00 Primary

  Subject matter not provided for in other groups of this subclass · CPC title