Auto focus adjusting method, auto focus adjusting apparatus, and digital photographing apparatus including the same

Patent metadata

Field	Value
Publication number	US-9152010-B2
Application number	US-201213566002-A
Country	US
Kind code	B2
Filing date	Aug 3, 2012
Priority date	Aug 5, 2011
Publication date	Oct 6, 2015
Grant date	Oct 6, 2015

Abstract

An auto focus (AF) adjusting method, an AF adjusting apparatus, and a digital photographing apparatus including the same, the AF adjusting apparatus including: an AF calculator for calculating focus detection evaluation values; a peak detector for detecting a peak position of the focus detection evaluation values; and a speed calculator for calculating a moving speed of a subject by using the peak position. When continuous photographing of still images is performed, the peak detector detects the peak position in an image pickup interval before a light exposure preparation interval for image capturing, and the focus lens driver performs moving body compensation driving for compensating for a focal position by using a moving speed calculated in the light exposure preparation interval before capturing starts.

First claim

What is claimed is:

1. An auto focus (AF) adjusting apparatus comprising:
an image pickup lens in which a position of a focus lens is variable for focus adjustment;
a focus lens driver for driving the focus lens;
an image pickup device for generating an image signal by picking up light which has passed through the image pickup lens;
an AF calculator for calculating focus detection evaluation values from the image signal;
a focal position detector for detecting a focal posi…

Assignees

• Hamada Masataka
• Samsung Electronics Co Ltd

Inventors

• Hamada Masataka

Classifications

• H04N23/663 Primary

  Electricity · mapped topic

• H04N23/63

  Electricity · mapped topic

• H04N23/673 Primary

  Electricity · mapped topic

• H04N23/73

  Electricity · mapped topic

• G03B3/10 Primary

  Physics · mapped topic