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. 27, 1999
Filed:
Dec. 02, 1996
James W Young, Phoenix, AZ (US);
Donald J Voss, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and circuit (20) for reducing flicker. Pixel values (Y.sub.0, Y.sub.1, Y.sub.-1) are transmitted to input terminals (23, 21, 22) of the circuit (20). A first difference magnitude is calculated by subtracting the pixel value (Y.sub.0) of a middle pixel from the pixel value (Y.sub.-1) of an upper pixel and taking an absolute value of the result. A second pixel magnitude is calculated by subtracting the pixel value (Y.sub.0) of the middle pixel from the pixel value of a lower pixel and taking an absolute value of the result. A larger of the first and second pixel magnitudes is compared to a user-selected threshold value. The pixel value (Y.sub.0) of the middle pixel is either changed or left unchanged in accordance with the results of the comparison.