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:
Dec. 26, 1995
Filed:
May. 27, 1994
Ingo Chmielewski, Braunschweig, DE;
Detlef Raeth, Hohenhameln, DE;
MB Video GmbH, Peine, DE;
Abstract
A circuit arrangement for improving the quality of video signals read out from a storage medium by isolating and processing a radio-frequency component which is added to a delayed video signal. An improvement can be achieved in particular in the signal details without any noise amplification effects and at the same time providing a natural picture. The circuit arrangement includes a synchronizing pulse separation stage for separating the radio-frequency component from the synchronizing pulses, a coring stage for suppressing signal components with signal values lying below a first threshold value and a controllable amplification stage, which influences the instantaneous signal value with a characteristic curve which is dependent on the signal value in a main signal branch and provides an increasing relative boosting of the radio-frequency component for greater signal values in the main signal branch.