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

摘要

Provided are an acquisition unit (1711) for acquiring a message and a threshold time related to the message, a display unit (1712) for displaying the message, a user interface (1713) for receiving an instruction for selecting the displayed message, and a management unit (1714) for managing the message as an already read message when the threshold time elapses after the message was displayed by the display unit (1712), regardless of whether or not the user interface (1713) received a selection instruction.