Airborne arrangement for displaying a moving map
First Claim
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1. An airborne display system installed aboard an aircraft for visualizing map sections and air-navigational data in flight, comprising:
- a map-signal generator for producing first video signals representing a section of a map of the territory overflown by the aircraft;
scanning means synchronized with said map-signal generator for establishing a succession of frame cycles each divided into a working period and a flyback period;
a source of air-navigational data;
mechanism controlled by said source for varying the map section represented by said first video signals in conformity with the current position of the aircraft;
symbol-generating means connected to said source for producing second video signals representing said air-navigational data;
oscilloscope means provided with a screen for the display of said map section; and
switchover means controlled by said scanning means for supplying an input of said oscilloscope means with said first video signals during working periods and with said second video signals during flyback periods of said frame cycles whereby symbolic representations of said air-navigational data are visually superimposed upon said map section on said screen, said oscilloscope means being provided with beam-deflecting means connected to said switchover means for energization in a line-by-line mode from said scanning means during said working periods and in a random-scan mode from said symbol-generating means during said flyback periods.
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Abstract
An airborne arrangement for displaying a moving map and aerial-navigation data such as symbols and characters on an electronic display screen is disclosed. It comprises a video map generator for converting the map to be displayed, carried on a film, into a video signal of the television type, a symbol generator which produces signals of the navigational data to be displayed with random scan, and an oscilloscope provided with switching circuits for consecutively displaying these items in the course of each frame cycle.
172 Citations
12 Claims
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1. An airborne display system installed aboard an aircraft for visualizing map sections and air-navigational data in flight, comprising:
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a map-signal generator for producing first video signals representing a section of a map of the territory overflown by the aircraft; scanning means synchronized with said map-signal generator for establishing a succession of frame cycles each divided into a working period and a flyback period; a source of air-navigational data; mechanism controlled by said source for varying the map section represented by said first video signals in conformity with the current position of the aircraft; symbol-generating means connected to said source for producing second video signals representing said air-navigational data; oscilloscope means provided with a screen for the display of said map section; and switchover means controlled by said scanning means for supplying an input of said oscilloscope means with said first video signals during working periods and with said second video signals during flyback periods of said frame cycles whereby symbolic representations of said air-navigational data are visually superimposed upon said map section on said screen, said oscilloscope means being provided with beam-deflecting means connected to said switchover means for energization in a line-by-line mode from said scanning means during said working periods and in a random-scan mode from said symbol-generating means during said flyback periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification