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:
Jun. 25, 1991
Filed:
May. 31, 1989
Gunter Scheffler, Munich, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and an apparatus for the simultaneous reduction of noise and cross-color interference in television signals includes a picture processor having a recursive filter for processing a luminance signal and two chrominance signals. The picture processor also has a change detector connected to the recursive filter for determining filter coefficients for both chrominance signals from the luminance signal and feeding the filter coefficients as input signals to the recursive filter. The change detector for the luminance signal has comparison devices with variable thresholds and two evaluation circuits triggered by the comparison devices for defining the filter coefficients for the luminance signal and the chrominance signals.