Invention Grant
- Patent Title: Digital camera
- Patent Title (中): 数码相机
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Application No.: US11322222Application Date: 2006-01-03
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Publication No.: US07791668B2Publication Date: 2010-09-07
- Inventor: Toshiaki Maeda
- Applicant: Toshiaki Maeda
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge PLC
- Priority: JP2005-010591 20050118
- Main IPC: G03B13/00
- IPC: G03B13/00

Abstract:
A digital camera includes: an evaluation value calculation unit that calculates a focal point evaluation value that changes in correspondence to a position assumed by a focus lens based upon image signals; a focal adjustment unit that executes an AF search by detecting a focus match position based upon resulting focal point evaluation values and driving the focus lens to the focus match position; a face recognition unit that recognizes a face of a person in an image by analyzing the image signals; a distance calculation unit that determines an approximate distance to the face based upon the recognized face size; and a lens position determining unit that determines a focus lens position to be set as a start point of the AF search by the focal adjustment unit based upon the approximate distance to the face having been determined by the distance calculation unit.
Public/Granted literature
- US20070030381A1 Digital camera Public/Granted day:2007-02-08
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