Abstract: Disclosed herein is a device and method for automatically controlling continuous auto focus. The device includes a lens unit installed in a camera module, and configured to receive images of an external subject; a lens actuation unit for moving the lens unit along an optical axis so as to focus on a subject; an image sensor for receiving the external images, converting the external images into image signals, and outputting the image signals; a computation unit for detecting focus values and feature parameters; a mode determination unit for automatically performing switching between general mode, specific mode and tracking mode, setting the mode, and automatically setting a fixed or variable window according to the set mode using the detected feature parameters; and a lens control unit for generating a control signal for controlling the lens actuation unit so as to perform continuous auto focus according to the detected focus values.

Abstract: The present invention relates generally to a system for measuring dispersion degree of a ferrite core of components of a deflection yoke, and more particularly to a permeability detection system of a ferrite core using a magnetic field induction method which extracts inferior ferrite cores by measuring a characteristic of the ferrite core through a winding wire and by detecting the dispersion degree of the ferrite core, during its production operation.