Patent ID: 8896672

Claim:
A method for operating an image display device for displaying a 3-dimensional (3D) image, the method comprising: displaying a high-level User Interface (UI) image including at least one low-level item; receiving, from a remote controller, a user selection signal for selecting one of the at least one low-level item; receiving a broadcast signal corresponding to the selected low-level item; generating a low-level UI image corresponding to the selected low-level item; and displaying the low-level UI image, wherein the high-level UI image and the low-level UI image have different senses of depth, wherein the selected low-level item is highlighted for discriminating between the selected low-level item and any other low-level items, wherein a depth of the low-level UI image is greater than a depth of the high-level UI image, wherein the low-level image includes an exit item indicating a termination of the display of the low-level image, wherein the generating includes: extracting a thumbnail image corresponding to the broadcast signal; and generating and outputting an on-screen display (OSD) signal including the extracted thumbnail image; and converting the OSD signal into the 3D image, and wherein the displayed low-level UI image further includes the thumbnail image, wherein: the high-level UI image and the low-level UI image include multiview images each including a left-eye image and a right-eye image; the senses of depth of the high-level UI image and the low-level UI image are respectively changed according to disparity between the left-eye image and the right-eye image for the high-level UI image and disparity between the left-eye image and the right-eye image for the low-level UI image; and the disparity between the left-eye image and the right-eye image for the low-level UI image is greater than the disparity between the left-eye image and the right-eye image for the high-level UI image.