Data communication device, data communication method, data requesting device, data requesting method, and data communication system

摘要

A data communication device is arranged with a setup unit for setting a true title of content data as predetermined data of content data set with viewing restriction, and setting a character string different from the true title of the content data as title data of the content data; a communication unit for performing data communication with a data requesting device; and a control unit for controlling transmission from the communication unit of the true title set as the predetermined data and the character string set as the title data based on whether or not a transmission request received from the data requesting device by the communication unit is a request based on input of predetermined information.