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. 26, 2019
Filed:
Jun. 12, 2017
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Hiroshi Abe, Kawasaki, JP;
Takashi Ichimiya, Yokohama, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/232 (2006.01); H04N 5/225 (2006.01);
U.S. Cl.
CPC ...
H04N 5/23212 (2013.01); H04N 5/2254 (2013.01); H04N 5/232122 (2018.08);
Abstract
A focus detection apparatus includes a first acquirer configured to acquire a first distance as a distance between a pair of object images in the first direction based on the pair of phase difference image signals, a second acquirer configured to acquire a correction value corresponding to a second distance as the distance in the second direction, and a calculator configured to calculate the phase difference using the first distance and the correction value.