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. 29, 1994
Filed:
Apr. 30, 1992
Robert P Parker, Westborough, MA (US);
Mark R Anderson, Indianapolis, IN (US);
Thomson Consumer Electronics, Inc., Indianapolis, IN (US);
Abstract
A video input signal is applied to a delay circuit having a plurality of taps which are coupled to maximum and minimum value selection circuits. In the absence of a video signal transient, the center tap of the delay circuit is coupled to an output terminal via an output switch. When a 'white going' transient occurs, the output switch sequentially selects the outputs of the minimum and maximum value selectors for application to the output terminal. When a 'black going' transient occurs, the output switch sequentially selects the outputs of the maximum and minimum value selectors for application to the output terminal. Offset producing circuits are coupled to the minimum and maximum value selectors whereby an output signal is produced having a preshoot, an overshoot and a rapid transition therebetween for video input signal transients of either direction and in which the shoot amplitudes are independently controllable thereby providing the combined transition speed advantages of 'edge replacement' enhancement systems with pre-shoots and overshoots characteristic of transversal peaking systems.