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. 06, 2022
Filed:
Oct. 09, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroshi Nakaoka, Saitama, JP;
Yohei Horikawa, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A focus detection apparatus comprises a determination unit that determines whether a first signal output from an image sensor satisfies a predetermined condition, and outputs first information indicating a result of the determination, a calculation unit that performs filter processing on a plurality of the first signals using predetermined coefficients at a predetermined cycle and outputs a second signal, a generation unit that generates second information showing an effect of the first signal which satisfies the predetermined condition on the second signal using the coefficients and plural pieces of the first information corresponding to the plurality of the first signals used in the filter processing, and a focus detection unit that detects a focus state based on a plurality of the second signals and the second information.