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.

Date of Patent:
Nov. 05, 1996

Filed:

Jun. 07, 1995
Applicant:
Inventors:

Michel Golia, La Brede, FR;

Jean-Michel Francois, Talence, FR;

Assignee:

Sextant Avionique, Meudon La Foret, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
340980 ; 345-7 ; 359630 ;
Abstract

A device for controlling the position of a symbolic image generated on a combiner by a head-up display system. Two tests are performed alternately: a general position test, using a luminous spot generated on the image; and a combiner position test, using a light source, fixed to the structure of the image generator and using the same collimating unit as this generator. The signals generated by each of these light sources are received by the same position sensor whose output signals are processed by the same circuit that varies the image's X and Y positioning voltages. The circuit incorporates an amplifier equipped with a gain switch that allows the amplifying gain to be set according to which test is being performed at any given time.


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