AUTO-FOCUSING METHOD FOR DETERMINING THE MOBILE DIRECTION OF A FOCUS LENS, RECORDING MEDIA RECORDING THE SAME, AND AN AUTO-FOCUSING DEVICE CAPABLE OF PERFORMING AUTO FOCUSING BY DETERMINING THE MOBILE DIRECTION OF A FOCUS LENS IN THE LOCATION OF A CURRENT FOCUS LENS

摘要

PURPOSE: An auto-focusing method determining the mobile direction of a focus lens, recording media recording the same, and an auto-focusing device are provided to improve auto-focusing speed by preventing an unnecessary focus lens from being driven.;CONSTITUTION: A focus lens drive unit moves a focus lens. A focus lens location determining unit(81a) determines whether the current location of a focus lens is in a remote range or local range. An image analysis unit(83a) is inputted to a current position of the focus lens. A phase overcast of a first image is determined. A moving direction determining unit(85a) determines the mobile direction of the focus lens to a long distance direction.;COPYRIGHT KIPO 2011