1. A head mounted display (HMD) device comprising: a communication controller configured to receive and transmit data; a display configured to display visual information; a camera configured to capture an image; and a processor configured to control the communication controller, the display and the camera, wherein the processor is further configured to: detect an object image from a first image including the object image, the first image being displayed in an external device located in an angle of view area of the camera, display information related to the object image when detecting that the first image including the object image is displayed in an external device, and display the first image including the object image in addition to the information when detecting that the first image is switched to a second image, which does not include the object image and is displayed in the external device.