28-10-2010, 10:13 AM
[attachment=6888]
blu-ray disc
Guided By: Darshan Tank Prepared By: Saurabh Agrawal 09IT003
ABSTRACT
Optical discs share a major part among the secondary storage
devices. Blu-ray disc is a next generation optical disc format.
The technology utilizes a blue laser diode operating at a
wavelength of 405nm to read and write data. Because of the
blue laser it can store enormous amount of data than was ever
possible.
Data is stored on a BD in the form of tiny ridges on the surface
of an opaque 1.1mm thick substrate. This lies beneath a
transparent 0.1mm protective layer. With the help of Blu-ray
recording devices it is possible to record up to 2.5 hrs. of very
high quality audio and video on a single BD.
Blu-ray also promises some added security, making ways for
copyright protections. BD can have a unique ID written on them
to have copyright protection inside the recorded streams.
Blu-ray Disc takes the DVD technology one step further just by using a laser with a nice colour
blu-ray disc
Guided By: Darshan Tank Prepared By: Saurabh Agrawal 09IT003
ABSTRACT
Optical discs share a major part among the secondary storage
devices. Blu-ray disc is a next generation optical disc format.
The technology utilizes a blue laser diode operating at a
wavelength of 405nm to read and write data. Because of the
blue laser it can store enormous amount of data than was ever
possible.
Data is stored on a BD in the form of tiny ridges on the surface
of an opaque 1.1mm thick substrate. This lies beneath a
transparent 0.1mm protective layer. With the help of Blu-ray
recording devices it is possible to record up to 2.5 hrs. of very
high quality audio and video on a single BD.
Blu-ray also promises some added security, making ways for
copyright protections. BD can have a unique ID written on them
to have copyright protection inside the recorded streams.
Blu-ray Disc takes the DVD technology one step further just by using a laser with a nice colour
