Invention Grant
US07884878B2 Lens apparatus, imaging apparatus, and automatic focusing control method
有权
镜头装置，成像装置和自动聚焦控制方法
- Patent Title: Lens apparatus, imaging apparatus, and automatic focusing control method
- Patent Title (中): 镜头装置，成像装置和自动聚焦控制方法
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Application No.: US11399911Application Date: 2006-04-07
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Publication No.: US07884878B2Publication Date: 2011-02-08
- Inventor: Katsumi Karasawa
- Applicant: Katsumi Karasawa
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JP2005-131330 20050428
- Main IPC: G03B13/00
- IPC: G03B13/00 ; H04N5/232
Abstract:
A lens apparatus capable of carrying out a suitable AF control operation even when text or character information is superimposed on a video signal is provided. The lens apparatus is configured to generate first and second AF evaluation values from a video signal obtained from an imaging unit of a camera apparatus, and to perform focusing control based on the second AF evaluation value. In the lens apparatus, the first AF evaluation value is selectively output to a second AF evaluation value generating unit for every scanning line of the video signal.
Public/Granted literature
- US20060244582A1 Lens apparatus, imaging apparatus, and automatic focusing control method Public/Granted day:2006-11-02
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