Blue Ray HD
Blue Ray HD
Blue ray DVDs
Although both the Blue ray HD and HD DVD discs use the same wavelength they are incompatible, like oil and water, therefore they do not mix. The Blue ray HD disc uses thinner layer (0.1mm) than the HD DVD (0.6 mm).
This enables the laser of the Blue ray HD disc to focus at its 0.85 aperture. Just like the lenses glasses the plastic surface on the discs enable the beam of the Blue ray HD and HD DVD players to read the information embedded on the disc.
Because the Blue ray HD formatted disc has a thinner surface a special chemical named Durabis which must be applied to the surface of the disc in an effort to protect the data which lies beneath the surface. The added chemical and the cost of the equipment that produces the disc ultimately results in an increase in the cost of the Blueray HD discs and equipment to the consumer.
In conjunction with the video storage capabilities of the Blue ray HD disc this really is a technology whose time has come.
Finally the blu-ray disc has been designed to be future proof. Also TDK has announced work on a 200gb blu-ray disc (6 x 33gb layers) which will future proof the format even more. The theoretical capacity of Blue Ray disc is 200GB.
Codecs used to store video in BlueRay HD standard are the same as the ones used for HD-DVD (Mpeg-2, Mpeg-4 and VC1). This is not surprising as Blue Ray HD and HD-DVD were designed to store existing formats of video, while in case with DVD new codecs were developed specifically to cater for new type of disks.
Unfortunately, multi format drive that could support both Blue Ray and HD-DVD will be very expensive and difficult to manufacture due to large differences in technology behind new standards.
Because of that, there is only one a winner. Blue ray HD format won the battle.
Related article : Blu ray DVDs and Samsung Blu ray Player
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