Invention Grant
- Patent Title: Automatic focusing device and focusing method
- Patent Title (中): 自动对焦装置和对焦方式
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Application No.: US11397516Application Date: 2006-04-04
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Publication No.: US07583311B2Publication Date: 2009-09-01
- Inventor: Tsutomu Kuroki , Takeshi Kindaichi
- Applicant: Tsutomu Kuroki , Takeshi Kindaichi
- Applicant Address: JP Tokyo
- Assignee: Olympus Imaging Corp.
- Current Assignee: Olympus Imaging Corp.
- Current Assignee Address: JP Tokyo
- Agency: Straub & Pokotylo
- Agent John C. Pokotylo
- Priority: JP2005-113409 20050411
- Main IPC: H04N5/232
- IPC: H04N5/232 ; H04N5/225 ; H04N9/68 ; G03B13/00 ; G03B17/00 ; G03B3/00
Abstract:
In an automatic focusing device generating a luminance signal by scanning a picked-up digital image signal, evaluating the contrast of the luminance signal, and driving its focusing based on the evaluation; the scanning includes at least a part where scan is performed in a zigzag-like manner. With this configuration, focusing is facilitated for an object having no high frequency components in the horizontal direction. This invention can be understood as an invention of a method.
Public/Granted literature
- US20060227238A1 Automatic focusing device and focusing method Public/Granted day:2006-10-12
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