Automatic focusing apparatus and automatic focusing method for a

Details Automatic focusing apparatus and automatic focusing method for a Automatic focusing apparatus and automatic focusing method for a

1990-11-20

1991-10-08

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358225, 358228, 354400, 354402, H04N 5232, H04N 5275, H04N 5238

Patent

active

050559338

ABSTRACT:
In automatic focusing apparatus of a video camera, any of the entire area, the central area and the midmost area of a picture is selected as an in-focus target area, so that an automatic focusing operation is performed in accordance with a focus evaluating value of the in-focus target area. When the entire area of the picture is selected as the in-focus target area, a focus evaluating value of the central area of the picture is simultaneously evaluated. When the automatic focusing operation starts, the entire area of the picture is selected as the in-focus target area, and if the focus evaluating value of the central area becomes higher than a predetermined value, the in-focus target area is switched to the central area of the picture. When the midmost area of the picture is manually set as the in-focus target area, the midmost area is selected with priority as the in-focus target area.

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