1. A method for controlling a display on a display area of a display device in a transportation device, comprising: generating, by a graphics control unit, data for displaying a background region and data for displaying a subregion of the display area, the display of the subregion covering the display of the background region; displaying in display content in the subregion at least a portion of display content of the background region covered by the subregion in a different manner than in the background region, wherein the display content in the subregion includes at least one image of a different category type than the display of the background region; detecting a position of at least one object in the vicinity of the display area; detecting a distance of the object from a surface of the display area; responsive to the detection of the object, generating an input signal based on the detected distance between the object and the surface of the display area; shifting the display content of the background region as a function of the input signal; responsive to the shifting the display content of the background region, updating the display content in the subregion so that, in a new relative position between the subregion and the display content of the background region, at least a portion of the display content of the background region covered by the subregion in a different manner than in the background region is continued to be displayed; and varying at least one of (a) a category type of the display displayed in the display content in the background region and/or (b) the category type of the display displayed in the display content in the subregion; wherein the category type of the display displayed in the display content in the background region is changeable independently from the display displayed in the display content in the subregion and the category type of the display displayed in the display content in the subregion region is changeable independently from the display displayed in the display content in the background region; wherein the display content in the subregion is displayed in the displaying step to display at least a portion of the display content of the background region covered by the subregion at a different scale than in the background region; and wherein, in a zoom mode, the respective display content in only one of the background region and the subregion is selectively zoomed depending on the detected position of the object in the vicinity of the display area; wherein: the scale of the display content in the subregion increases as the detected distance to the object decreases and the object approaches the subregion; and the scale of the display content of the background region increases as the detected distance to the object decreases and the object approaches the background region.