Patent ID: 8593408

Claim:
An electronic device comprising: a single display unit having a length that is different from a width of the single display unit, and including a touch screen and configured to display at least one current page on the single display unit, wherein the single display unit is configured to enable the at least one current page to be output transversely as well as longitudinally with respect to the single display unit, wherein the at least one current page is displayed on the single display unit in a single-page output mode when the at least one current page is output longitudinally with respect to the single display unit, and wherein the at least one current page is displayed on the single display unit in a double-page output mode when the at least one current page is output transversely with respect to the single display unit; an input unit configured to receive a drag touch input from a user applying physical contact along the touch screen; and a controller configured to cooperate with the single display unit and the input unit to: detect, via the input unit, the drag touch input received from the user; display, on the single display unit, information pertaining to a preview page associated with the drag touch input; and replace the at least one current page with one or more new pages including the preview page, wherein the at least one current page is a single current page in the single-page output mode, and the single current page is replaced with the preview page on the single display unit, and wherein the at least one current page is at least one of first and second current pages in the double-page output mode, and the first and second current pages are replaced with the new pages including the preview page on the single display unit.