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. 29, 2019
Filed:
Jan. 30, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Masahiro Kawarada, Tokyo, JP;
Hirokazu Ishii, Chofu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A focus detection apparatus includes a determination unit configured to determine a degree of effect of noise included in a pair of parallax image signals, and an acquisition unit configured to acquire information about a phase difference between the pair of parallax images based on a calculation of correlation between the pair of parallax image signals. The acquisition unit selects a filter used to acquire the information about the phase difference from among a plurality of filters having different frequency characteristics based on a determination result of the determination unit, and outputs, as a focus detection result, the information about the phase difference acquired by the correlation calculation based on the pair of parallax image signals applied to the selected filter.