Visual display provided with secured electronic architecture

The invention relates to a display device with a secured electronic architecture for aeronautical applications. Each device comprises an electronic computer and an associated matrix-type display device. The invention applies essentially to display systems having a small number of large-sized screens...

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Bibliographische Detailangaben
Hauptverfasser:	DE LAUZUN FREDERIC, LACOSTE LILIAN
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DISPLAYING EDUCATION FREQUENCY-CHANGING LABELS OR NAME-PLATES NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The invention relates to a display device with a secured electronic architecture for aeronautical applications. Each device comprises an electronic computer and an associated matrix-type display device. The invention applies essentially to display systems having a small number of large-sized screens. The invention proposes to structure the display device as two independent display zones and the computer as two electronic subassemblies, which are also independent, in such a way that a failure of one of the elements entails, at most, only the failure of just one zone of the display device. The invention applies essentially to liquid-crystal active-matrix display devices having a lighting system based on fluorescent tubes. Two embodiments of the display zones are described. In the first embodiment, only one part of the area of the screen is lost in the event of a failure. In the second embodiment, the resolution of the display screen is simply downgraded by a factor of 2 in the event of a failure.