Introduction-Technology

Blu-ray Discs are the same size and shape as
current DVDs
 Discs
are the same thickness but Blu-ray Discs have a
thinner protective layer


Blu-ray Discs can transfer data and video at 3 times
the rate of a DVD
Blu-ray Discs also hold more data than DVDs and
HD-DVDs
Introduction-Technology

Blu-ray players/recorders use a blue laser to
read/write Blu-ray Discs


Blu-ray players/recorders have a numerical aperture
value higher than DVD or HD-DVD


This laser has a smaller wavelength than the red laser used
for DVDs
These players focus the laser onto a smaller area, allowing
more data to be stored in the same amount of space
Blu-ray players can be designed to be back
compatible with DVDs
Evolution



Development was caused by the demand of more
storage per area
Nichia discovers blue laser (gallium nitrite) that lasts
for more than 10,000 hrs (min. lifetime to be
manufactured)
Research by Blu-ray Disc Association: consortium
led by nine top companies
 Sony,

Phillips, Sharp, Hitachi, Samsung, etc.
Single, double, and quad-layer discs
Benefits

Shorter wavelength of the blue-violet laser allows for a
higher storage capacity



High quality audio and High Definition video
High reading and recording speeds




3x faster than DVD
Interactivity


5x more storage than DVD
Live updates of movies, games, etc., through the player’s access
of the internet
Production cost is lower than DVDs’
Strong protective layer makes it less vulnerable to scratches
Blu-ray player is backwards compatible with CDs and DVDs.
Criticism

Expensive for the consumer
 Market
price is presently high
 Consumer must purchase a Blu-Ray player
 Consumer must have HDTV to experience Blu-ray to its
full potential

Digital Rights Management limits content usage
Opinion
•
•
•
•
•
Blu-Ray Offers Greater Storage than DVDs or HDDVDS (50/30/8.5gb)
Offers Full 1080p High-Definition
Greater Interactivity
Blu-Ray is utilized by the Next-Gen Video Game
Console, the PS3
Blu-Ray Has Support of Most of the Major Movie
Studios and Consumer Electronic Companies
Opinion
•
•
•
•
•
The Only High Definition Disk of the Future
It is a new product and has not yet been perfected
It is more expensive than today’s standards
If you have the money, we recommend this product
for its innovation, quality and unrivaled support
However, more advanced users or privateers may
not like the DRM features
Works Cited
Blu-ray.com <http://www.blu-ray.com/>
Blu-ray Disc. (2006). In High Definition: A-Z Guide to Personal
Technology. Boston, MA: Houghton Mifflin. August 27 , 2008.
<http://www.credoreference.com/entry/6611078>
Butler, Richard. “Blue lasers.” Chemistry and Industry, March 4,
2002 p9