Abstract: A heating device including a high-power heating area is disclosed. In detail, the heating device includes a switch and a controller, wherein the switch is configured to connect an alternating current (AC) power source to a rectifying portion in order to provide AC power of different power phases to a plurality of rectifiers for a high-power heating area when high power is provided through the high-power heating area of the heating device and in order to provide AC power of only one AC power phase from among the different power phases to the plurality of rectifiers for the high-power heating area when low power is provided through the high-power heating area, and the controller is configured to control a switching operation of the switch according to a power level of the heating device.

Abstract: A mobile terminal and a method of controlling an operation thereof are disclosed. In the method of controlling the operation of the mobile terminal, the mobile terminal is communicatively with a head mounted display for displaying an augmented reality (AR) screen obtained by combining a virtual image with a real environment. If image data acquired through a camera is analyzed and a predetermined gesture input is detected, the head mounted display is controlled such that a display change corresponding to the detected gesture input is displayed on the AR screen. In a state of displaying the AR screen through the head mounted display, various operations related to the mobile terminal can be controlled according to the predetermined gesture input.

Abstract: A mobile terminal and a method of controlling an operation thereof are disclosed. In the method of controlling the operation of the mobile terminal, the mobile terminal is communicatively with a head mounted display for displaying an augmented reality (AR) screen obtained by combining a virtual image with a real environment. If image data acquired through a camera is analyzed and a predetermined gesture input is detected, the head mounted display is controlled such that a display change corresponding to the detected gesture input is displayed on the AR screen. In a state of displaying the AR screen through the head mounted display, various operations related to the mobile terminal can be controlled according to the predetermined gesture input.