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. 12, 2011
Filed:
Oct. 18, 2005
Kazuhiro Suzuki, Gifu, JP;
Keishi Kato, Komaki, JP;
Kazuhiro Suzuki, Gifu, JP;
Keishi Kato, Komaki, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A noise eliminator is provided which can highly compress and store dark current noise components while maintaining characteristics, including many high frequency components. A noise distribution analysis sectiondetermines the magnitude distribution of dark current noise components of at least some pixels, and then computes the threshold and typical values for quantization based on this distribution. A quantization sectionquantizes the dark current noise components based on the computed threshold value, and a memorystores the quantized dark current noise components. An inverse quantization sectioninversely quantizes the quantized dark current noise components stored in the memorywith reference to the typical value computed by the noise distribution analysis section. The inversely quantized dark current noise components are supplied to a subtraction section, and the subtraction sectionsubtracts the inversely quantized dark current noise components from an image signal.