Blu-ray
Big names such as Philips and Sony have developed the optical-storage
format known as Blu-ray. The product was created in order to store huge
amounts of data of high definition audio and sound. The name "Blu-ray"
comes from the laser that is needed to write and read data on and from
a disc. The color of the laser is a violet-blue. The optical disc's
density is extreme, and because of this, in order for data to be
written to the disc, it must be smaller. The wavelength of the Blu-ray
laser is shorter compared to the red lasers used in normal drives
today.
The technology used in Blu-ray is named for its laser technology in
reading and storing information and data. Because the Blu-ray
wavelength is on the end of the spectrum compared to the red laser that
is used to read CD and DVD technology, 405 nanometer (nm) for the
Blu-ray versus the 650 nm and also 780 nm for the CD and the DVD
technology, Blu-ray laser is extremely able of storing huge amounts of
data making use of the exact same space. The explanation for this is
the "spot size", which is a much smaller requirement. The wavelength of
the Blu-ray laser is 405 nanometers and the pickup aperture is only
0.85 nanometers.
When looking at a standard Blu-ray disk - single-layer - the estimated capacity is around 23.3 Gigabytes, and the double layer Blu-ray disc has an estimated capacity of 46.6 Gigabytes.
There is a war in the market place between Blu-ray DVDs and HD-DVDs. There are constant battles between these two systems, fighting to see who will take the throne to be the next media form for the coming years. There have been talks that Blu-ray and HD-DVD have not yet proven themselves worthy, since there is only one throne.
The one obvious benefit when considering Blu-ray discs is the fact that more information can be stored and this allows high definition video and crystal clear sound. Basically, the more data on a Blu-ray disc the more can be read to produce a crystal clear picture with vividness and more color.
The one and probably the most important benefit of Blu-ray discs is not because the information is packed tightly and early releases of the discs were vulnerable to scratches, but because a new harder coating has been applied to the discs to help make them extremely hard to scratch.
When looking at a standard Blu-ray disk - single-layer - the estimated capacity is around 23.3 Gigabytes, and the double layer Blu-ray disc has an estimated capacity of 46.6 Gigabytes.
There is a war in the market place between Blu-ray DVDs and HD-DVDs. There are constant battles between these two systems, fighting to see who will take the throne to be the next media form for the coming years. There have been talks that Blu-ray and HD-DVD have not yet proven themselves worthy, since there is only one throne.
The one obvious benefit when considering Blu-ray discs is the fact that more information can be stored and this allows high definition video and crystal clear sound. Basically, the more data on a Blu-ray disc the more can be read to produce a crystal clear picture with vividness and more color.
The one and probably the most important benefit of Blu-ray discs is not because the information is packed tightly and early releases of the discs were vulnerable to scratches, but because a new harder coating has been applied to the discs to help make them extremely hard to scratch.
