A display device, comprising a processor, a display screen, and a plurality of infrared receivers that are arranged into an infrared receiver array (123, 132, 142, 151) and coupled to the display screen, wherein the plurality of infrared receivers are configured to receive a patterned infrared signal that comprises a circular ring infrared signal sent by a remote control device, wherein energy in different rings in the circular ring infrared signal is different, and wherein a projection pattern of the patterned infrared signal on the display screen comprises a circular ring projection pattern or an oval ring projection pattern; the processor is configured to obtain positions of M receiving points covered by the circular ring projection pattern or the oval ring projection pattern on the infrared receiver array (123, 132, 142, 151), wherein M is a positive integer; the processor is further configured to determine circular rings corresponding to the receiving points by using the positions of the receiving points as centers and using outer ring radiuses and inner ring radiuses that correspond to signal strength of the circular ring infrared signal received by the receiving points; the processor is further configured to determine an overlapping area of M circular rings based on the circular rings respectively corresponding to the M receiving points, and determine a central position of the overlapping area as a pointing position of the remote control device on the display screen; and the display screen is further configured to display a prompt mark in the pointing position of the display screen, wherein the prompt mark is used to prompt a user with the pointing position of the remote control device on the display screen. the plurality of infrared receivers are configured to receive a patterned infrared signal that comprises a circular ring infrared signal sent by a remote control device, wherein energy in different rings in the circular ring infrared signal is different, and wherein a projection pattern of the patterned infrared signal on the display screen comprises a circular ring projection pattern or an oval ring projection pattern; the processor is configured to obtain positions of M receiving points covered by the circular ring projection pattern or the oval ring projection pattern on the infrared receiver array (123, 132, 142, 151), wherein M is a positive integer; the processor is further configured to determine circular rings corresponding to the receiving points by using the positions of the receiving points as centers and using outer ring radiuses and inner ring radiuses that correspond to signal strength of the circular ring infrared signal received by the receiving points; the processor is further configured to determine an overlapping area of M circular rings based on the circular rings respectively corresponding to the M receiving points, and determine a central position of the overlapping area as a pointing position of the remote control device on the display screen; and the display screen is further configured to display a prompt mark in the pointing position of the display screen, wherein the prompt mark is used to prompt a user with the pointing position of the remote control device on the display screen.