Avionics System with Three Display Screens for Aircraft

• US 20120280986A1
• Filed: 05/04/2012
• Published: 11/08/2012
• Est. Priority Date: 05/05/2011
• Status: Abandoned Application

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: CHABOT, Philippe, GAUCHE, Benoît, BESNARD, Nicolas, LEULLIER, François
• Application Number:
  US13/464,845
• Publication Number:
  US 20120280986A1
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2380/12 Avionics applications
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

In the field of secure avionics systems for aircraft, a system comprises strictly three display units and three or four graphics generation computers connected to the display units. Each display unit comprises a single large-size screen able to display two totally independent half-images, and all the power supply, control and display circuits are doubled-up such that a single failure brings about the loss, at the most, of one half-screen. Each display unit is connected to two graphics generation computers at least, such that the failure of one computer does not affect the display.

Claims

1. A secure avionics system for aircraft, comprising strictly three display units and at least three graphics generation computers connected to the display units;

each graphics generation computer comprising;

image generation means for generating at least two half-images;

connection means connecting said computer to at least a first display unit and to a second display unit;

each display unit comprising;

connection means connecting said display unit to at least a first graphics generation computer and to a second graphics generation computer;

two identical and independent electronic addressing assemblies, each assembly being used to display a half-image on one half of the display screen of the display unit, the two displayed half-images coming from the same graphics generation computer;

electronic “

switching”

means for displaying either the two half-images from the first graphics generation computer or the two half-images from the second graphics generation computer.

2. The secure avionics system for aircraft according to claim 1, wherein the avionics system comprises strictly three graphics generation computers, each graphics computer being capable of generating four half-images.

3. The secure avionics system for aircraft according to claim 1, wherein the avionics system comprises strictly four graphics generation computers.

4. The secure avionics system for aircraft according to claim 1, wherein two graphics generation computers include video image processing means and each of said graphics generation computers is connected to a head-up display unit.

5. The secure avionics system for aircraft according to claim 1, wherein each display unit comprises a single liquid crystal display screen made up of two half-screens, each half-screen being addressed by an independent control circuit assembly, an independent lighting assembly and an independent electrical power supply.

6. The secure avionics system for aircraft according to claim 1, wherein the image generation means of each graphics generation computer generate two independent half-images representative of data required for flight control, navigation, aircraft monitoring or airport taxiing.

7. The secure avionics system for aircraft according to claim 1, wherein the image generation means of each graphics generation computer generate two independent half-images forming one and the same continuous image representative of data required for flight control, navigation, aircraft monitoring or airport taxiing.

8. The secure avionics system for aircraft according to claim 3, wherein the four graphics computers are grouped together in pairs, to form dual graphics computers, capable of generating four independent half-images or four half-images forming two continuous images representative of data required for flight control, navigation, aircraft monitoring or airport taxiing.