Abstract: A power circuit power circuit for generating an output power voltage from an input power voltage includes an input power voltage node configured such that an input power voltage is applied thereto; a first node configured to generate an output power voltage; a mode common power switch circuit connected to the input power voltage node and the first node; and a mode controller circuit configured to generate a mode control signal that controls an operation mode of the mode common power switch circuit to any one of at least one pulse modulation mode and a low-dropout (LDO) mode.

Abstract: A system and method for providing VR (Virtual Reality) contents for relaxation training to stabilize the psychological state of a user. The system and method model VR contents suitable for the psychological state of a user, based on information of the user, provide the modeled VR contents to the user, analyze the psychological state of the user based on the provided VR contents, change the VR contents by reducing the output speed of the VR contents or reducing the change rate of an object, and provide the user with the VR contents remodeled through the change, thereby providing VR contents more suitable for the user.

Abstract: A control knob having an image output part is provided. The control knob having an image output part of the present invention includes: a head part through which an image is output; a body part into which a portion of the head part is inserted; a guide part which is provided inside the body part and coupled to the head part so as to guide the horizontal movement of the head part; and a returning part which is connected to the head part with the guide part and guides the head part horizontally moved along the guide part to the central portion of the body part.

Abstract: A control knob having an image output part is provided. The control knob having an image output part of the present invention includes: a head part through which an image is output; a body part into which a portion of the head part is inserted; a guide part which is provided inside the body part and coupled to the head part so as to guide the horizontal movement of the head part; and a returning part which is connected to the head part with the guide part and guides the head part horizontally moved along the guide part to the central portion of the body part.

Abstract: A door mounting structure using a guide rail, capable of guiding movement of a door and minimizing the space occupied for opening and closing the door, is provided. The door mounting structure includes a case panel forming part of a case, a door to partially close the case panel, at least one guide protrusion formed in the door, and at least one guide rail guiding the guide protrusion to move the door inside of the case. According to the present invention, the door size has minimal effect on the internal layout of the computer case, thereby increasing the degree of freedom for designing. Also the door can be fixed at arbitrary position while being opened due to friction between a door boss and the guide rail.

Abstract: The present invention relates to a door mounting structure using a guide rail that guides movement of a door and minimizes the space occupied for opening and closing the door. The door mounting structure includes a case panel forming part of a case, a door to partially close the case panel, at least one guide protrusion formed in the door, and at least one guide rail guiding the guide protrusion to move the door inside of the case. According to the present invention, the door size has minimal effect on the internal layout of the computer case, thereby increasing the degree of freedom for designing. Also the door can be fixed at arbitrary position while being opened due to friction between the door boss and the guide rail.