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. 10, 1987
Filed:
Jan. 31, 1986
Yves C Faroudja, Los Altos, CA (US);
Jack J Campbell, San Francisco, CA (US);
Faroudja Laboratories, Inc., Sunnyvale, CA (US);
Abstract
A method is disclosed for reducing cross-color artifacts occuring at a diagonal luminance transition in a quadrature modulated color television signal in which a chrominance component carried on a color subcarrier has been separated from the signal by comb filter processing. The steps of the method are detecting the occurrence of a diagonal luminance transition in the signal; developing a control signal from the detected luminance transition; and, processing the chrominance component under the control of the control signal to reduce the cross-color artifact in the chrominance at the instance of the detected luminance transition.