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:
Sep. 26, 1995
Filed:
Feb. 17, 1994
Applicant:
Inventor:
Richard J Hertel, Fort Wayne, IN (US);
Assignee:
ITT Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348217 ; 348229 ;
Abstract
A pick-up tube of a camera device is optically coupled to an image intensifier tube. An exposure control circuit is provided which monitors the charge supplied to the phosphor screen of an image intensifier device and, thus, to the photodetector of the pickup tube, and which varies the exposure time in accordance with the level of scene illumination and the charge storage capability of the photodetector. The exposure control system also adjusts the gain of the image intensifier in accordance with the scene illumination prior to readout of the photodetector in order to optimize the signal to noise ratio.