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:
May. 06, 1980
Filed:
Jul. 13, 1978
Applicant:
Inventors:
Lawrence H Gilligan, Charlottesville, VA (US);
James E Hermansdorfer, Charlottesville, VA (US);
Assignee:
Sperry Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358228 ;
Abstract
A device for automatically controlling the intensity of light impinging on the face plate of a television camera includes a shutter which is operated through a pulse width modulator so as to be opened for a length of time which varies inversely with the intensity of light entering the imaging light path between the scene and the camera.