Abstract: A vacuum cleaning device which includes a body and an extension pipe assembly. The body includes a fan motor that generates an inhalation force, a dust collecting unit that collects dust, and wheels for driving the body. The extension pipe assembly includes an inhalation nozzle that inhales air and an extension pipe that guides air inhaled through the inhalation nozzle. The extension pipe assembly is rotatably coupled to the body so that a load of the body and a load of the extension pipe assembly are dispersed into the wheels and the inhalation nozzle and are supported on a ground. Since a load of the vacuum cleaning device is not transferred to a user, usage conveniences can be improved, and an aesthetic sense can be improved with a simple and discriminative design.

Abstract: A semiconductor device includes a substrate including a conductive region, an insulating layer disposed on the substrate and including an opening exposing the conductive region, and a conductive layer buried within the opening and including a first region disposed on inner side walls of the opening and a second region disposed within the first region. The first region includes a plurality of first crystal grains and the second region includes a plurality of second crystal grains. The pluralities of first and second crystal grains are separated from each other at a boundary formed between the first and second regions.

Abstract: A method of controlling a stereo vision device includes calculating depth information by analyzing stereo images, setting regions of interest within each of the stereo images by using the depth information, and performing an auto focus operation on each of the regions of interest. The method may further include performing an auto exposure operation on each of the regions of interest.