11. A method of providing information related to a broadcast program, the method comprising: detecting at least one object from a scene by an object detector; generating a keyword including a name and information relating to a meaning of the object; setting a scene section comprising a group of the scenes that deal with a same subject between the scenes displayed on a display by using the keyword that is generated based on the at least one object from the scenes, the scene section comprising a group of the scenes that deal with a same subject between the scenes displayed on the display; requesting searching of related information associated with the object by using the keyword and receiving the searched related information; and synchronizing the received related information along with the scene section comprising the group of the scenes that deal with the same subject between the scenes displayed on the display and providing the related information synchronized with the scene section, wherein the setting of the scene section comprises setting as the scene section a group of scenes between which an amount of preserved keywords is equal to or greater than a threshold value, the preserved keywords being defined by a number of keywords that exist in common between keywords generated from a first scene and keywords generated from a second scene, and wherein the generating of the keyword comprises determining an object name which corresponds to the object and a category to which the object name belongs by using an object name dictionary in which a plurality of object names are individually mapped to categories, thereby generating the keyword including the object name and the category.
15. The method of claim 11 , wherein the detecting of the object comprises detecting the object using at least one of video information, sound information, caption information, Electronic Program Guide information and telop character information, which are included in received broadcast streams.