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:
Oct. 15, 1991
Filed:
May. 30, 1989
Applicant:
Inventors:
Assignee:
Thomson CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315 10 ; 358168 ;
Abstract
A luminous data display system is used to improve readability depending on fluctuations in the light environment. It has automatic means to adjust the luminance of the image produced on a screen. These means use a first sensor close to the screen to obtain an indication of the ambient illumination received by the screen, and a second sensor, preferably placed on the helmet, to appreciate the distribution of luminance perceived in the observer's field of vision. Circuits process the detected signal and a manual adjustment signal to produce a correction signal applied to the image video signal.