Invention Grant
- Patent Title: Photographing apparatus and method to reduce auto-focus time
- Patent Title (中): 摄影装置和方法来减少自动对焦时间
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Application No.: US13332643Application Date: 2011-12-21
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Publication No.: US08760567B2Publication Date: 2014-06-24
- Inventor: Toshihiro Hamamura
- Applicant: Toshihiro Hamamura
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Drinker Biddle & Reath LLP
- Priority: JP2010-284092 20101221; KR10-2011-0125214 20111128
- Main IPC: H04N5/232
- IPC: H04N5/232

Abstract:
Photographing apparatus and method to reduce auto-focus time are disclosed. A photographing apparatus is provided that includes two imaging optical systems; an imaging device that converts images of subjects formed by the imaging optical systems into respective image signals; a subject distance calculation unit that calculates subject distances between the imaging device and the subject based on two images generated by the imaging device; and an in-focus position detection unit that detects an in-focus position based on contrast evaluation values of the image signals obtained for a plurality of focusing positions, performs preparatory focusing driving by moving the focusing positions close to the in-focus position based on the calculated subject distances, and scans the focusing positions from the position close to the in-focus position to the in-focus position.
Public/Granted literature
- US20120154670A1 Photographing Apparatus and Method to Reduce Auto-Focus Time Public/Granted day:2012-06-21
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