US 12,316,962 B2
Focus control device capable of preventing object from being excluded from focusing target, focus controlling method, and storage medium
Hideyasu Hongu, Kanagawa (JP); and Taira Komatsuzaki, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 25, 2024, as Appl. No. 18/753,461.
Application 18/753,461 is a continuation of application No. 18/451,202, filed on Aug. 17, 2023, granted, now 12,047,679.
Application 18/451,202 is a continuation of application No. 17/703,045, filed on Mar. 24, 2022, granted, now 11,765,455, issued on Sep. 19, 2023.
Claims priority of application No. 2021-060781 (JP), filed on Mar. 31, 2021.
Prior Publication US 2024/0348919 A1, Oct. 17, 2024
Int. Cl. H04N 23/667 (2023.01); G03B 13/18 (2021.01); G03B 13/36 (2021.01); H04N 23/67 (2023.01)
CPC H04N 23/667 (2023.01) [G03B 13/18 (2013.01); G03B 13/36 (2013.01); H04N 23/675 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A focus control device comprising:
a processor; and
a memory storing a program which, when executed by the processor, causes the focus control device to:
perform correlation calculation based on first focus detection signals and second focus detection signals output from an image sensor, to calculate an image displacement amount;
perform focus adjustment by using one of manual focus for controlling a focus lens position in accordance with an operation by a user and autofocus for automatically controlling the focus lens position based on the image displacement amount; and
in a case where focus control is switched from the autofocus to the manual focus, and then switched from the manual focus to the autofocus, change a target for the focus adjustment in accordance with an operation for the manual focus, to an object to be focused by the autofocus after the focus control is switched from the manual focus, which is different from an object focused by the autofocus before the focus control is switched to the manual focus.