1. A method for controlling partial image enlargement in a DMB (digital multimedia broadcasting) receiver, the method comprising the steps of; receiving DMB image data in real time and displaying a broadcast image on a screen; determining whether or not a partial image enlargement mode is selected by a user; displaying a window on a part of the screen if the partial image enlargement mode is determined to be selected; and converting an image in the displayed window into a full screen image and displaying the full screen image on the screen.