The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 1983
Filed:
Aug. 01, 1980
Jean C Reymond, Paris, FR;
Maurice Gontier, Paris, FR;
Thomson-CSF, Paris, FR;
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.