Patent ID: 9007401
Filing Date: 2015-04-14
Classification: G02B,G06F,G06T

Abstract:
1. A head mounted display (HMD) comprising: a camera to capture an image located in a front direction of the HMD; a display to display an augmented reality image; and a processor to: control the camera and the display, detect an external device, wherein the external device displays a content image, display a first type augmented reality image associated with the external device, display a second type augmented reality image associated with the content image displayed on the external device, change a display position of the first type augmented reality image according to a rotation of the external device, change a display position of the second type augmented reality image according to a rotation of the content image, and if the content image is not rotated, maintain the display position of the second type augmented reality image even when the external device is rotated.