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:
Nov. 23, 2021
Filed:
Mar. 26, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Takenori Kobuse, Kawasaki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An object of the present invention is to obtain an image having a better S/N ratio in accordance with gain settings in an image pickup apparatus that enables amplifying a signal based on output of a photoelectric conversion unit, with a plurality of gains. An image pickup element provided in an image pickup apparatus has a photoelectric conversion unit in which unit pixels are arranged in a matrix and a signal voltage is generating by photoelectric conversion. A column amplifier of the image pickup element can amplify the signal voltage photoelectrically converted with a plurality of gains. An image pickup element control unit performs drive control of the image pickup element to perform gain settings. An image composition unit performs image composition by using a plurality of image signals having different gains. When the image pickup element changes an amplification factor of the column amplifier to output image signals with a plurality of gains, the image pickup element control unit changes a value of a second gain that is smaller than that of a first gain among the gains and performs control so as not to change the value of the first gain.