The blu-ray disc is an optic format which is the main rival of the Hd-Dvd format in the race to become the standard medium for Hdtv. The battle in the middle of these two formats is similar to that of Vhs and Betamax.
Today the major Hollywood movie studios are evenly in reserve of both Hd-Dvd and Blu-ray, but in the electronics industry, most habitancy are in favour of the blu-ray disc.
Blu-ray
The main differences in the middle of these two recorders and players and optic disc technologies is that the blu-ray format uses a blue violet laser to write and read data rather than the conventional red laser. Red light has a longer wavelength than blue light agreeing to the Bda which is made up of numerous clubs including Panasonic, Pioneer, Phillips and Sony; this means it's potential for the laser to be focussed on the disc with far more precision.
Your standard blu-ray disc has a maximum storage capacity of 25Gb with the dual-layer format being able to hold up to 50Gb, which is sufficient for 240 minutes of Hdtv. Just like the Hd-Dvd format, blu-ray doesn't require any caddy and the recorders and players are capable of playing standard Dvd discs. The codec's that are currently supported by the blue laser format including Mpeg-4, H.264 which forms part of QuickTime 7 by Apple and the Microsoft Windows Media format Vc-1.
One of the main drawbacks of the blue laser format is that it can be very costly when compared to your standard Dvd player. However, as with Dvds of the past, the price of this technology should at last fall, particularly as blu disc format is likely to have strong competition in the near future with Hd-Dvd coming into its own.
A Look at the Blu-Ray Format
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