Will Blu-ray Be The New DVD?

After the never ending uncertainty is finally over BluRay manufacturers are now looking forward to the upcoming Christmas business of film and mass storage for the next generation players, with many great films soon to be offered and sophisticated, attractively priced players about to hit the stores it looks like this system may shine at last.

The evolution of optical disk caught on CD and DVD has reached its limits, with the Blu-ray now there is a higher standard of quality available. Here is the BluRay breakdown, infra-red laser 780 nm, aperture: 0.5 track distance: 1.6 m μ Pit size: 0.8 μ m storage density: 0.41 Gb/in2 DVD (middle): 650 nm red laser, aperture: 0.6 Track distance: 0.74 m μ Pit size: 0.4 m μ storage density: 2.77 Gb/in2 BD (right): 405 nm blue laser, aperture: 0.85 track distance: 0.32 m μ Pit size: 0149 μ m storage density: 14, 74 Gb/in2.

In 2003, the first units on the market and there were no players, but only recorders their task was solely to record Japanese HDTV, as this was the only country where they were available. The big HDTV push initially helped HD DVD, but it has a big problem it has two data layers capable of storing 30 GB.

The Blu-ray can hold 50 GB that is what is swinging the market in its favour more space equals higher quality and it is more compatible with current MPEG4-AVC compression techniques than DVD.

On the surface DVD and BluRay look basically the same, they are the same size and thickness one big difference is that DVD stores its data half way through the disk the BluRay has its Data just below the surface this allows the laser to focus ion the information more precisely.
This does give BluRay its big disadvantage light scratches or even fingerprints can ruin the stored data. The film content, menu navigation data, bonus materials and copy protection mechanisms need to reach clearly and closely specified standards, so that each player's hardware can play everything this is far more effective with the added data storage of BluRay.

The professional creation of a media memory is called authoring and this is performed in a studio with complex programs. As a file system for storing data was elected UDF (2.6 for BD-R). Films are in an MPEG transport stream structure (TS).

There can be up to nine video and 32 audio tracks introduced. Even with the Blu-ray, there are recordable (BD-R) and rewritable (deletable) media (BD-RE), including the right PC burner all already stretched even with 50 GB.

All this may lead to the gradual adoption of BluRay as the standard player, it took many years for DVD to replace video the same will be true of BluRay.