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:
Mar. 29, 2011
Filed:
Dec. 18, 2008
Eiichiro Ikeda, Yokohama, JP;
Eiichiro Ikeda, Yokohama, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
In a color-noise reduction circuit in which a color-difference signal of a target pixel is substituted in a random substitution circuit () by a color-difference signal of another pixel within an area including the target pixel, a pixel-substitution color-difference signal that is the substituted signal whose high-frequency components are removed in an LPF () and the color-difference signal of the target pixel are added together in a summation circuit () at a predetermined ratio obtained by a pixel-substitution utilization rate calculation circuit (), and is outputted as a noise-reduced color-difference signal of the target pixel. Therefore, efficient color-noise reduction and suppression of occurrence of color jitters can be realized.