Patent ID: 8836757

Claim:
A three-dimensional (3D) image providing device comprising: an index selection unit configured to select at least one index frame set from 3D image data including plural frame sets; a thumbnail generation unit configured to obtain left and right images for the selected index frame set and generate a thumbnail frame set on the basis of the obtained left and right images; a storage unit configured to store the 3D image data and the generated thumbnail frame set; an image decoding unit configured to restore the frame set selected from the stored 3D image data; an on-screen display (OSD) generation unit configured to select at least one of the stored thumbnail frame set, and generate an OSD screen displaying the selected thumbnail frame set; and an image combining unit configured to generate a combined image based on the frame set restored by the image decoding unit and the OSD screen generated by the OSD generation unit, wherein the OSD generation unit is further configured to: recognize a total reproduction time of the stored 3D image data, and select a stored thumbnail frame set corresponding to a time point obtained by dividing the total reproduction time based on a user selection or according to a predetermining setting.