CONTENT TRANSMISSION HISTORY ANALYSIS SYSTEM AND DATA COMMUNICATION CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a contents distribution system capable of quickly detecting an illegal device which may set attack capable of breaking the copyright protection of contents.

SOLUTION: In a contents communication history analysis system 1, contents include contents additional information indicating whether communication history is to be recorded or not in accordance with the properties of the contents at the communication of the contents. In the case of transmitting the contents to a TV 20 or a PC 30, a data communication control device 40 judges whether the communication history is to be recorded or not, and at the time of judging the recording of the communication history, prepares and stores the communication history. A communication history analysis server 50 acquires the communication history stored in the data communication control device 40 and analyzes the acquired communication history.

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