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:
Jul. 31, 2012
Filed:
Oct. 15, 2008
Kazushige Takahashi, Kanagawa, JP;
Hiromasa Ikeyama, Tokyo, JP;
Manabu Hara, Kanagawa, JP;
Yukihiro Kinoshita, Kanagawa, JP;
Kazushige Takahashi, Kanagawa, JP;
Hiromasa Ikeyama, Tokyo, JP;
Manabu Hara, Kanagawa, JP;
Yukihiro Kinoshita, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
A noise correction circuit that detects and corrects noise included in an image signal output from an image sensor is provided. The noise correction circuit includes a noise determining unit, a noise removing unit, and a random number adding unit. The noise determining unit is configured to calculate an average value of a signal level in a predetermined range of the image signal output from the image sensor and use the calculated average value to calculate a noise component in a predetermined direction. The noise removing unit is configured to remove noise from the image signal output from the image sensor in response to the noise component determined by the noise determining unit. The random number adding unit is configured to add a random number at a level not determined by quantization of the image signal to the image signal after removal of the noise by the noise removing unit.