Blu-ray is a DVD format
for storing high-definition video. Blu-ray is one of the two new emerging high definition formats, the other is HD DVD.
Blu-ray gets its name from the blue laser it users. Standard DVD uses a red laser to read discs.
Blu-ray is designed to replace standard DVD’s. A Blu-ray disk can hold up to 25 GB per layer as opposed to HD DVD which holds on 15 GB per layer.
Blu-ray development was spear-headed by Sony, the original developer of Beta-Max. Other companies that support Blu-ray include Apple, Dell and Panasonic.
Blu-ray implements DRM with a scheme called BD+.
Currently the PlayStation 3 has a Blu-ray drive.