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:
Dec. 14, 2021
Filed:
Apr. 21, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Takenori Kobuse, Kawasaki, JP;
Yusuke Yamashita, Kawasaki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An imaging apparatus having a wide dynamic range and a stable black level without decreasing frame rate comprises a pixel unit including pixels, a read out unit for reading out the noise signal from each pixel and to amplify the noise signal by a first gain to generate a first noise signal, reads out the pixel signal and amplifies the pixel signal by the first gain and a second gain to generate a first and a second pixel signal, a first memory unit for storing a second noise signal generated by amplifying, by the second gain, the noise signal read out from a pixel of a predetermined row, and a subtraction unit for subtracting the first noise signal from the first pixel signal and to subtract the second noise signal stored in the first memory unit from the second pixel signal, while sequentially reading out signals from each pixel.