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Blu-Ray disc
Alongside HD-DVD, the Blu-ray disc is viewed as the successor to DVDs and offers especially high
storage capacity of up to 27 GB as a single-layer disc (double-layer up to 54 GB) with very few write
errors.
The term Blu-ray disc comes from the blue color of the laser. Because a color cannot be registered as a
trademark, the letter "e" was removed from the word "blue".
The high storage capacity of the Blu-ray disc suits high definition videos and slideshows in high quality
perfectly, since these are characterized by large file sizes (depending on material approximately 40
MB/sec) and very high memory use.
Hint:
A corresponding device is required for viewing Blu-ray discs. To fully enjoy the benefits of high
definition video, you should also use an HD-enabled TV.
Companies that were involved in developing Blu-ray technology have united themselves into the Blu-ray
Disc Association (BDA).
Blu-ray discs come in three varieties:

Only readable BD ROM (comparable to DVD video),

rewritable BD-RE (comparable to DVD±RW or DVD RAM),

and as a disc that can be written to only once BD-R (comparable to DVD±R).
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