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:
Oct. 05, 2021
Filed:
Oct. 14, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Takashi Ichimiya, Kanagawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A focus detection apparatus includes an image sensor having a plurality of pixels and an AD converter configured to switch a low-luminance conversion mode and a high-luminance conversion mode, a determination unit configured to determine whether an output signal is a signal AD converted in both the low-luminance conversion mode and the high-luminance conversion mode or a signal AD converted in only one of the two modes, an inhibition unit configured to, in a case where the output signal from the AD converter is a signal AD converted in both the two modes, inhibit a level difference of the output signal at a boundary between the two modes, and a calculation unit configured to, based on the signal for which the level difference is inhibited, calculate an amount of defocus of the imaging lens.