Unauthorized contents detection system

Details Unauthorized contents detection system Unauthorized contents detection system

2011-03-01

2011-03-01

Chen, Shin-Hon (Department: 2431)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S179000, C713S180000, C713S181000, C380S251000, C380S259000

Reexamination Certificate

active

07900062

ABSTRACT:
Processing load on an executing device for conducting playback is high during the playback of contents since the executing device performs verification of the contents validity in parallel with the contents playback, and therefore the executing device has to be equipped with a highly efficient processor. The present invention reduces the processing load involved in the verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on the DVD. In addition, the present invention is capable of improving the accuracy of detecting unauthorized contents to some extent by randomly selecting a predetermined number of encrypted units every time the verification is performed.

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