DATA PROCESSING DEVICE, DATA TRANSMISSION DEVICE, DATA PROCESSING SYSTEM, DATA PROCESSING METHOD, AND DATA TRANSMISSION METHOD

摘要

Provided is a data processing device including: an acquisition unit (1711) which acquires a message and a threshold amount of time for the message; a display unit (1712) which displays the message; a user interface (1713) which receives instructions for selection of the displayed message; and a management unit (1714) which manages the message as a read message, irrespective of whether the user interface (1713) has received the instructions, when a threshold amount of time has elapsed since the message is displayed on the display unit (1714).