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:
Apr. 08, 1986
Filed:
Oct. 18, 1984
Applicant:
Inventor:
Rudolf Turner, Vernon Hills, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
358167 ; 358166 ; 358155 ; 358 36 ;
Abstract
Noise in a composite video signal is detected by looking for the presence of excessive pulses resembling broad pulses or insufficient horizontal sync pulses. The output of the detector is averaged by a low pass filter, the output of which is, in turn, applied to a comparator for comparison with a reference DC level in generating a signal representing the noise level in the composite video signal.