Electronic camera that adjusts a distance from an optical...

Details Electronic camera that adjusts a distance from an optical... Electronic camera that adjusts a distance from an optical...

2008-08-25

2011-12-13

Hernández Hernández, Nelson D. (Department: 2622)

Television

Camera, system and detail

Optics

C396S079000

Reexamination Certificate

active

08077252

ABSTRACT:
An electronic camera includes an image sensor having an imaging surface for capturing an object scene through a focus lens. When the object scene captured by the imaging surface includes a face portion of a human, a CPU designates, as a focal-point search area a first imaging area for covering an outline of the face portion. The CPU also designates, as a frequency-component detection area, a second imaging area that is smaller than the first imaging area and is for capturing an inner side of the outline of the face portion. Subsequently, the CPU obtains a high-frequency AF evaluation value and a mid-frequency AF evaluation value detected corresponding to the frequency-component detection area, and designates, as a lens moving range, a range different depending upon a relative ratio between the high-frequency AF evaluation value and the mid-frequency AF evaluation value. Thereafter, the CPU moves the focus lens within a designated range, and references a partial image generated on the imaging surface in a manner to correspond to the focal-point search area so as to search a focal point for the face portion.

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Japanese Office Action dated Apr. 18, 2011, issued in corresponding Japanese Patent Application No. 2007-220357.

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