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. 05, 1990
Filed:
Jul. 10, 1987
Applicant:
Inventors:
Hisatoshi Fukuda, Yokohama, JP;
Hisashige Fujiwara, Yokohama, JP;
Assignee:
Victory Company of Japan, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H03K / ;
U.S. Cl.
CPC ...
328167 ; 328165 ; 358167 ; 358 36 ; 455306 ;
Abstract
A noise reduction circuit comprises a first circuit for extracting a relatively high frequency component of an input signal and amplitude-limiting a component of said extracted high frequency component exceeding a predetermined level, a second circuit for delaying said input signal such as a video signal by a predetermined time, and a third circuit for adding outputs of said first and second circuits and outputting an added result as an output of said noise reduction circuit.
Fukuda, Hisatoshi. (1990). Noise reduction circuit (U.S. Patent No. 4931743). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4931743
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile