Invention Grant
- Patent Title: Automatic focus detection apparatus, control method for the same, and image pickup apparatus
- Patent Title (中): 自动对焦检测装置及其控制方法以及摄像装置
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Application No.: US14134306Application Date: 2013-12-19
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Publication No.: US09253395B2Publication Date: 2016-02-02
- Inventor: Hideyasu Hongu
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2012-283666 20121226
- Main IPC: H04N5/232
- IPC: H04N5/232 ; G03B13/00 ; G03B13/36

Abstract:
In the case where a predetermined subject can be detected from an image with a first detection method but cannot be detected with a second detection method, an in-focus direction of a subject detected with the first detection method is determined during a focusing operation. In the case where, when the predetermined subject becomes detectable with the second detection method, the in-focus direction of the predetermined subject detected with the second detection method has been determined by a determination unit, the focus-detecting operation is started using the determined in-focus direction. Speeding up of the focus-detecting operation that utilizes subject detection results is thereby realized, while suppressing any drop in the image quality of recorded images.
Public/Granted literature
- US20140176784A1 AUTOMATIC FOCUS DETECTION APPARATUS, CONTROL METHOD FOR THE SAME, AND IMAGE PICKUP APPARATUS Public/Granted day:2014-06-26
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