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. 28, 1995
Filed:
Feb. 23, 1994
Applicant:
Inventor:
Achim Elgert, Bad Durrheim, DE;
Assignee:
Deutsche Thomson-Brandt GmbH, , DE;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
3153821 ;
Abstract
A circuit for generating a dynamic focusing voltage in a television receiver utilizing overscan periods includes a focusing voltage generator. The focusing voltage is compared to a reference voltage and a switching signal is provided when the focusing voltage goes below the reference voltage. A switch is responsive to the switching signal and provides a direct focusing voltage during the overscan periods. The direct focusing voltage has a level which maintains the arithmetic mean of the focusing voltage the same during the normal scan period and the overscan periods.