What is the difference between Blu-ray Disc and DVD?
Just as DVD meant a 5 to 10 times increase in storage capacity compared to CD, Blu-ray Disc represents an increase over DVD capacity by 5 to 10 times. This is due, among other reasons, to the usage of a blue instead of a red laser and improved lens specifications, allowing for a much smaller focus laser beam which enables the recording of much smaller and higher density pits on the disc. Hence, more precision and ultra high storage densities are made possible. Due to the fact that the data layer on a Blu-ray Disc is placed much “closer” to the laser lens than in DVD, there is less distortion resulting in significantly improved tolerances. Thanks to the greatly enhanced HD video and audio quality, as well as the advanced interactivity and networking features, Blu-ray represents a huge leap forward in home entertainment, offering consumers an unprecedented HD experience.
