Sony Blu-ray notebook reviewed

Posted on Tuesday, Sep 26 2006 @ 03:41 CEST by Thomas De Maesschalck
X-bit Labs checked out the Sony VAIO AR notebook series which feature Blu-ray players
What’s the difference between Blu-ray and the traditional CD and DVD formats? First, it employs a laser, which is in fact blue-violet rather than exactly blue, with a wavelength of 405nm whereas CD and DVD formats use red lasers with wavelengths of 780nm and 650nm, respectively. Blu-ray makes use of different data reading and processing algorithms than those employed in the DVD, and they provide for a high flexibility of the physical structure of the medium. A pit can be 138, 149 or 160nm deep, so the resulting capacity of a single-layer recordable disc is up to 27 gigabytes. Dual-layer discs with a capacity of 50GB have been released, too, and this is not the limit since Blu-ray disc manufactures are willing to introduce multi-layer media with capacities up to 200GB. That’s impressive indeed, isn’t it? Blu-ray comes in three flavors: BD-ROM (read-only media for distribution of movies, games and other data), BD-R (recordable media) and BD-RE (rewritable).
Read on over here.


About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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