BD+

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BD+

(Blu-ray Disc Plus) A copy protection system for Blu-ray movies that is called "self-protecting" because each movie studio can devise its own security structure. The Blu-ray disc contains proprietary software that the Blu-ray player with BD+ runs to decrypt certain sections of the disc. Since the disc has an executable program, the software can be periodically updated to counter successful attempts at breaking the system. The BD+ program can also detect a Blu-ray player that has been hacked.

The BD+ method comes from Macrovision, which acquired the technology from Cryptography Research in 2007. It is more sophisticated than Advanced Access Content System (AACS), the first Blu-ray protection system, which is based on keys that are continuously discovered by hackers who uncover the codes from the media player software used to play Blu-ray content on the computer. See AACS and Blu-ray.
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References in periodicals archive ?
We similarly found similar Ala-9 Val MnSOD gene polymorphism genotype and allele distribution between the BD and MDD patient groups and the healthy control group and similarly between the merged group (BD plus MDD) and the health control group.
Fifty two patients were randomized to receive either 350 mg three times a day (tid) of pure mastic gum for 14 days (Group A), or 1,05 g tid of pure mastic gum (Group B) for 14 days, or pantoprazole 20 mg twice a day (bd) plus pure mastic gum 350 mg tid for 14 days (Group C) or pantoprazole 20 mg bd plus amoxicillin 1 g bd plus clarithromycin 500 mg bd for 10 days (Group D).
Triplicate sets of A549 cells were separately exposed to ISO plus nitrogen oxides (N[O.sub.x]), BD plus N[O.sub.x], photochemical degradation products of ISO plus N[O.sub.x], or photochemical degradation products of BD plus N[O.sub.x] for 5 hr.
Similarly, BD photochemical products are significantly more cytotoxic than BD plus NO alone, as shown in Figure 4B.