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:
Mar. 29, 1994
Filed:
Jul. 17, 1992
Applicant:
Inventors:
Martin Laufe, Villingen-Schwenningen, DE;
Fritz Ohnemus, Villingen-Schwenningen, DE;
Assignee:
Deutsche Thomson-Brandt GmbH, Villingen-Schwenningen, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348707 ; 348806 ;
Abstract
A reverse feedback amplifier which generates a correction current having two oscillations per line period is used to eliminate geometric distortions on the screen on a television kinescope. The reverse feedback amplifier includes an output transistor, a resonance transformer and a feedback network. An improvement of the amplifier includes a switch and a resistor for decreasing the output voltage of the reverse feedback amplifier during the scanning of the center portion of the screen.