Allied Corporation

Martin W Feintuch

Mitchell Aron

A moving map display is provided to represent the location of a vehicle such as an aircraft on a video display of a map. Map images are scanned by a remote pickup unit (40) using flying spot scanning techniques to scan transparencies (51) of sections of the map. In order to increase the resolution of map images, each transparency (51) is divided into a plurality of sections and an image of the flying spot from a CRT (45) is superimposed simultaneously onto the nine sections, using an optical tunnel. In order to scan only the desired portions of these images and in order to produce a coherent display, the images are selectively gated 'on', electronically or by using light shuttering techniques. In the preferred embodiment, four of a group of nine images are used to create a given display, although other combinations are possible. The resultant display is a composite video modulated raster derived from the scanned images on the slide (51). Advantages include the ability to replace individual slides (51) when a section of the map must be updated, and an ability to accomplish positional accuracy which is not dependent upon exact dimensions of a large map area reproduced onto film, and retain full CRT resolution.

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Fort Lee, NJ, United States of America

Martin W Feintuch