Abstract: A cooking apparatus includes a case, a cooking chamber formed inside the case, a camera configured to obtain an image inside of the cooking chamber, a transparent member, a camera cooling fan configured to blow air toward the camera, a motor configured to rotate the camera cooling fan, and a controller to be electrically connected to the camera and the motor. The controller is configured to operate the camera to obtain a first image inside of the cooking chamber, configured to identify foreign substance-related information of a lens of the camera or the transparent member based on the first image, and configured to control an operation of the motor to perform a cleaning mode, in which the camera cooling fan is rotated at a first rotation speed for a first rotation time, based on the determining that the foreign substance is present.

Abstract: A method and an apparatus for creating structural drawings and an electronic device adapted to the method are provided. The method includes setting a reference height for at least one wall, receiving image information regarding at least one wall, generating vectors for the wall of the image information, and generating a structural drawing based on one or more of the generated vectors.

Abstract: A semiconductor device including a driving region and a dummy region disposed at both side of the driving region includes a semiconductor substrate having a plurality of active regions spaced from each by equal distances in the driving region, a dummy active region in the dummy region, and a guard ring region surrounding the active regions and the dummy active regions. The distance between the dummy active region and the active region nearest to the dummy active region is substantially the same as each distance between adjacent ones of the active regions, and is smaller than the distance between the dummy active region and a portion of the guard ring region nearest to the dummy active region.