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:
Jul. 28, 1992
Filed:
Nov. 26, 1990
Applicant:
Inventors:
Steven C Brummette, Knoxville, TN (US);
William G Miller, Knoxville, TN (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358166 ;
Abstract
A video sharpness circuit comprising a delay circuit and a mixer for mixing an input video signal and the input video signal delayed by the delay circuit to develop an output video signal having improved sharpness. The mixer has a nonlinear gain for sharpening higher amplitude video signals more than lower amplitude video signals, and a circuit for adjusting the nonlinearity of the mixer.