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:
Jul. 20, 1982
Filed:
Sep. 24, 1979
Applicant:
Inventor:
Silverio A Valdes, Alexander, NY (US);
Assignee:
GTE Sylvania Incorporated, Seneca Falls, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H01J / ; H02H / ;
U.S. Cl.
CPC ...
358243 ; 315-3 ; 328 10 ;
Abstract
In a CRT system having a cathode coupled to a source of first potential voltage and a control grid biased negatively with respect to the cathode, means coupled between a source of second potential voltage and control grid for superimposing negative-going transitions in the second potential voltage upon the control grid so as to suppress the appearance of spots upon the face of the CRT subsequent to the de-energization of that system.