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. 29, 1988
Filed:
Sep. 24, 1987
Robert R Eckenbrecht, East Bethany, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A color tint controller for a closed circuit video system receives red and blue color difference signals and selectively changes the amplitudes of these signals to adjust the color of a displayed image. This is accomplished by changing the levels of the red color difference signals in a first direction, and changing the levels of the blue color difference signals in a second opposite direction, and then adding these changed signals to generate an adjusted red difference signal which is fed into a RGB matrix. At the same time, the levels of the blue difference signals are changed in the first direction and the levels of the red color difference signals are changed in the second direction, and these two signals are combined to form an adjusted blue difference signal which is also fed to the RGB matrix. The changing of the various color difference signals in different directions is performed in various multiplier circuits responsive to a corresponding set of control signals or multiplier coefficients with which the various color difference signals are multiplied. The various control signals are generated from a differential voltage created by a control potentiometer.