US Patent No. 9,279,955

IMAGE PICKUP APPARATUS, CONTROL METHOD THEREOF, AND PROGRAM


Patent No. 9,279,955
Issue Date March 08, 2016
Title Image Pickup Apparatus, Control Method Thereof, And Program
Inventorship Masafumi Kimura, Kawasaki (JP)
Koichi Fukuda, Tokyo (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,279,955

1. A focus control apparatus comprising:
a receiving unit configured to receive images which respectively correspond to different exit pupil areas of a lens;
a first detection unit configured to detect a contrast of an image generated by an image generation unit compositing images
shifted from each other, wherein the images shifted from each other respectively correspond to different exit pupil areas;

a second detection unit configured to detect a phase differnce between images, wherein the images respectively correspond
to images of different exit pupil areas; and

a controller configured to control a focus position based on the results of the first and second detection units.