Invention Grant
US07486331B2 Auto focus methods and auto focus devices for electronic cameras using the same
失效
自动对焦方式和自动对焦设备使用电子摄像机
- Patent Title: Auto focus methods and auto focus devices for electronic cameras using the same
- Patent Title (中): 自动对焦方式和自动对焦设备使用电子摄像机
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Application No.: US11098865Application Date: 2005-04-05
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Publication No.: US07486331B2Publication Date: 2009-02-03
- Inventor: Yi-Hsuan Lin
- Applicant: Yi-Hsuan Lin
- Applicant Address: TW Taichung
- Assignee: Asia Optical Co., Inc.
- Current Assignee: Asia Optical Co., Inc.
- Current Assignee Address: TW Taichung
- Agency: Thomas, Kayden, Horstemeyer & Risley
- Priority: TW93128829A 20040923
- Main IPC: H04N5/232
- IPC: H04N5/232
Abstract:
Auto focus methods for electronic cameras are disclosed. The method of the present invention obtains and compares evaluation values (high frequency component (HFC)) corresponding to desired image signals from left or right locations relative to a center of a zoom lens of an electronic camera, thereby locating the maximal evaluation value. The location corresponding to the located maximal evaluation value is an optimum focus location.
Public/Granted literature
- US20060061679A1 Auto focus methods and auto focus devices for electronic cameras using the same Public/Granted day:2006-03-23
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