Cartographic indicator

Details Cartographic indicator Cartographic indicator

1980-08-01

1983-11-15

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 76, 358 81, H04N 9535

Patent

active

044159226

ABSTRACT:
A cartographic indicator, usable aboard an aircraft, comprises an analyzer continuously scanning a map representing the overflown terrain in a limited number of colors whose primary components red, green and blue are quantized as to their levels of intensity. In response thereto, a first PROM emits a multibit word identifying each scanned map point in regard to chrominance and luminance, this word being fed to a second PROM where some of its color components may be selectively suppressed by a command from an operator-controlled instruction generator. The resulting word read out from the second PROM is supplied to a third PROM connected to three decoders emitting corresponding control signals to a color CRT for visual display of a replica of the scanned map portions, not necessarily in its original colors. Synthetic video symbols may be superimposed on the displayed map replica with the aid of a mixer which may also be switched to replace the map representation by a radar image.

REFERENCES:
patent: 3401299 (1968-09-01), Crowell
patent: 3519347 (1970-07-01), Bowker et al.
patent: 3705359 (1972-12-01), Kappes
patent: 3710377 (1973-01-01), Goillen et al.
patent: 4138726 (1979-02-01), Girault
patent: 4183046 (1980-01-01), Dalke et al.
patent: 4240112 (1980-12-01), Inaba et al.

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