The advancement of technology has truly come a long way and
has changed the way people watch movies for the better It
was not long ago that people watch movies at home through
their VCR's which accepts Betamax tapes and VHS tapes.
These bulky tapes were replaced first by VCDs or video
compact discs that have a storage capacity of 700 MB.
Because of the low storage capacity of these VCDs, one full
length movie requires two VCDs. LaserDiscs (LD) soon
replaced VCDs but was short-live as DVDs entered the scene.
DVDs are short for Digital Versatile Discs and have six
times the storage capacity of that of VCDs.
A single DVD with a storage capacity of 4.7 GB is capable
of storing one full-length movie as well as other
behind-the-scene footages and other extra features. Because
of this, DVDs have revolutionized the movie industry as
more and more people are buying DVDs and watching them at
home. The DVD may however be replaced by a new technology
that would further enhance the movie industry. This new
technology is known as Blu-Ray.
Blu-Ray technology is considered to be the next-generation
DVD. Blu-Ray Discs or BD can record, store and are able to
play back more video, digital audio, as well as computer
data. BDs can also store a full length high-definition
movie which usually takes a higher bandwidth and storage
space. Compared to DVDs. Blu-Ray Discs have the advantage
on the amount of information that it can store. A
single-layer BD has the capacity to store 27 GB of digital
information. This single-layer BD is enough to hold more
than two hours of high-definition videos or to hold more
than 13 hours of standard video. A double-layer BD on the
other hand can be able to store more than 4.5 hours of
high-definition video because of its 50 GB storage capacity.
Optical disc storage media such as DVDs and BDs uses laser
light to write and read information Blu-Ray technology uses
blue-violet rays instead of the red ray used for Digital
Versatile Discs (DVDs). The amount of information that can
be stored in discs is dependent on how large and precise
the laser light is. Blue laser has a shorter wavelength
than that of red laser and because of this, blue laser is
more precise and can write information in much smaller
spaces. This is the reason why a lot more information can
be stored in a Blu-Ray disc.
A huge storage capacity is not the only advantage of a
Blu-Ray technology. Blu-Ray Discs can also transfer
information at a higher rate. BDs have a data transfer rate
of 36 Mbps (megabits per second) which is higher than that
of DVDs which transfer only at 10 Mbps.
Blu-Ray technology is in competition with the High
Definition DVD (HD DVD) formats for becoming the official
storage medium for High Definition movies. Blu-Ray discs
were first utilized by Sony in their PlayStation 3 games
and because of this, BD is now becoming popular among giant
movie production studios such as Warner Brothers which have
stated that they will only release their High Definition
movies in BD formats starting May of 2008.
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Digital media such as Blu-ray and DVD have been an interest
of mine for a extended period now. As new media technology
emerges I feel that it is important to keep up to date and
in tune with the market. To learn more about DVD Covers and
Blu-ray Covers please visit http://www.dvdcoversfuzion.com/
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