Display screen and method for the secure presentation of information

The invention relates to a display screen comprising a background raster (1) with light-radiating background raster elements of a first kind (2) and with light-radiating or opaque background raster elements of a second kind (3). Arranged in front of the background raster (1), as seen from the direct...

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Bibliographische Detailangaben
Hauptverfasser:	DAEHNERT, ULLRICH, SCHWARZ, JUERGEN, EMMRICH, SVEN
Format:	Patent
Sprache:	chi ; 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 EDUCATION FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The invention relates to a display screen comprising a background raster (1) with light-radiating background raster elements of a first kind (2) and with light-radiating or opaque background raster elements of a second kind (3). Arranged in front of the background raster (1), as seen from the direction of a viewer, is a foreground raster (4) which features completely light-transparent foreground raster elements (5) and light-attenuating foreground raster elements (6). The foreground raster (4) is arranged at a specified distance from the background raster (1) and oriented in a specified lateral position normal to the distance, relative to the background raster (1). In such a display screen for the secure presentation of information, the completely light-transparent foreground raster elements (5) and the light-attenuating foreground raster elements (6) are, in at least one foreground area of the foreground raster (4), distributed stochastically at a ratio of about 50:50. This distribution serves as a key for e