Abstract: A touch panel acquires position information indicating the position of contact with or approach to an operation surface in every period divided by predetermined intervals. An action judging unit judges whether or not an action by contact with or approach to the operation surface of the touch panel is a first predetermined action. An operation determining unit determines a start page of automatic page-turning in which display pages of a document to be displayed are changed from one page to another in sequence on the basis of the position information and the information indicating the history of the position information when the action judging unit judges that action by the contact with or the approach to the operation surface of the touch panel is the first predetermined action.

Abstract: A communication terminal comprises: a base station master communication unit that communicates with the base station; a master terminal communication unit that communicates with a slave communication terminal; a communication terminal determination unit that determines whether a communication between the slave communication terminal and the base station is allowed or not, according to notification information that the base station master communication unit receives from the base station; and a communication instruction unit that instructs to the slave communication terminal to perform a communication between the slave communication terminal and the base station, when the communication terminal determination unit determines that the slave communication terminal and the base station communicate.

Abstract: A touch panel (220) acquires position information indicating the position of contact with or approach to an operation surface in every period divided by predetermined intervals. A storage unit (250) stores the position information acquired by the touch panel (220) and information indicating a history of the position information. An action judging unit (230) judges whether or not an action by contact with or approach to the operation surface of the touch panel (220) is a first predetermined action. An operation determining unit (240) determines a start page of automatic page-turning in which display pages of a document to be displayed are changed from one page to another in sequence on the basis of the position information stored in the storage unit (250) and the information indicating the history of the position information when the action judging unit (230) judges that action by the contact with or the approach to the operation surface of the touch panel (220) is the first predetermined action.