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. 10, 2012
Filed:
Sep. 04, 2009
Shiroshi Kanemitsu, Kanagawa, JP;
Junichi Hosokawa, Kanagawa, JP;
Kazuhiro Tabuchi, Kanagawa, JP;
Takaaki Kawakami, Kanagawa, JP;
Shiroshi Kanemitsu, Kanagawa, JP;
Junichi Hosokawa, Kanagawa, JP;
Kazuhiro Tabuchi, Kanagawa, JP;
Takaaki Kawakami, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A noise canceling circuit that includes a sharp/flat-part determining unit that determines whether a neighborhood of a target pixel in a digital video signal is a sharp part or a flat part by calculating a sharpness value indicating sharpness and an approximate noise value approximately indicating a noise value included in the target pixel based on pixel values of the target pixel and a predetermined number of pixels inputted immediately before and after the target pixel, and comparing the sharpness value and the approximate noise value, a noise extracting unit that extracts the noise value of the target pixel by performing a noise extraction corresponding to a result of the determination performed by the sharp/flat-part determining unit, and a correcting unit that corrects the pixel value of the target pixel by using the extracted noise value of the target pixel.