An apparatus includes a content detector portion, a display controller portion, an operation state detector portion, and a popup display controller portion. The content detector portion detects contents belonging to a same time range The display controller portion collects the contents, and displays, on a display portion along a time series, content-related graphical information of the respective contents, and a selector serving to select a desired content from among respective contents displayed. The operation state detector portion detects an operation state of an operation portion serving to perform an operation of moving the selector. In accordance with time information of a content selected when a predetermined operation state is detected, the popup display controller portion detects a content having past time information with respect to the time information of the selected content, and popup displays content-related graphical information of the detected content on the display portion.