A display device that is to be connected with an information terminal includes: a video reception unit that receives video information about a screen including a cursor from the information terminal; a touch panel that brings up on display the screen based upon the video information received by the video reception unit and detects a touch position specified by a touch operation; and a transmission unit that transmits, to the information terminal, displacement quantity information corresponding to a quantity of displacement from the display position of the cursor to the touch position.