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. 11, 1986
Filed:
Sep. 03, 1985
Applicant:
Inventor:
Theodore V Lester, Schiller Park, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315382 ; 330156 ; 330311 ;
Abstract
Dynamic focus system utilizing an improved cascode amplifier is provided wherein the amplifier provides substantial voltage gain for a composite horizontal and vertical parabola signal and the output of the cascode amplifier is provided to the focus control electrode of a cathode ray tube. Undesired phase shift of the output of the cascode amplifier is prevented by AC coupling a signal corresponding to the noninverted input signal applied to the cascode amplifier to the base of the second transistor of the cascode amplifier.