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Optical disc technology has been developed signifi cantly since the early 1980s.Optical disc has become the main distribution approaches in the areas of music,software,electric book and movie,thus the protection of Intelligence Protection(IP)is a very important topic.In order to prevent users or hackers from piracy,more and more optical disc encryption techniques have been proposed.This article is an overview of this technology.Firstly,the feature of optical disc encryption is analyzed.Then several important encryption technologies are introduced.In the end,the content protection technologies used for the third generation optical disc with blue lasers are introduced,including Advanced Access Content System(AACS)and Self-Protecting Digital Content(SPDC).
Optical disc technology has been developed signifi cantly since the early 1980s.Optical disc has become the main distribution approaches in the areas of music, software, electric book and movie, thus the protection of Intelligence Protection (IP) is a very important topic. order to prevent users or hackers from piracy, more and more optical disc encryption techniques have been proposed. This article is an overview of this technology. Firstly, the feature of optical disc encryption is analyzed. end, the content protection technologies used for the third generation optical disc with blue lasers are included, including Advanced Access Content System (AACS) and Self-Protecting Digital Content (SPDC).