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. 12, 1985
Filed:
Sep. 21, 1982
Applicant:
Inventors:
Michael D Flasza, Schaumburg, IL (US);
David K Nienaber, Des Plaines, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340703 ; 358 27 ;
Abstract
A color monitor includes R G and B gain blocks, in the form of balanced multipliers, and a potentiometer picture control for supplying a common DC gain control voltage to the differentially coupled transistor pairs in the gain blocks. A common black level control adjusts the zero level for the signals. Changes in gain control voltage do not affect black level or color balance of the picture tube display.