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:
Jun. 21, 2022
Filed:
Jun. 09, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Yoshihiko Konno, Tachikawa, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/232 (2006.01); G03B 13/36 (2021.01);
U.S. Cl.
CPC ...
H04N 5/232121 (2018.08); G03B 13/36 (2013.01); H04N 5/232127 (2018.08);
Abstract
A control apparatus includes a first calculating unit configured to calculate a defocus amount by a focus detection of a phase difference method, a second calculating unit configured to calculate a contrast evaluation value of an image, a third calculating unit configured to calculate a function indicating a relationship between the defocus amount and the contrast evaluation value calculated at each of a plurality of lens positions, and a fourth calculating unit configured to calculate an adjusting value of the defocus amount based on an extreme value of a function.