Blu-Ray: Difference between revisions

All that space comes with a drawback. The read and seek speeds of the new disc are only marginally faster, while the capacity is much higher, leading to long load times for games released on this format. The problem is not as noticeable during movies, which are of course strictly linear. But it becomes even more noticeable when burning, although those wishing to back up hard drives would need a lot of time anyway.

 

Blu-rays were expected to replace DVDs as the standard home video format, but takeover isn't really panning out. An HDTV is needed to enjoy the sharp picture (it doesn't look different from a DVD on lower-resolution sets), but the sale of those has been slower than expected, as many people are unwilling to spend upwards of a thousand dollars to replace their functioning CRT TVs just for a prettier picture. It doesn't help that many people also feel that Blu-rays are not a significant upgrade from DVDs, as much as optical discs were an upgrade from cassettes (many DVDs hold up remarkably well when "upconverted" to high-definition -- most Blu-ray players should be able to play a standard DVD and in turn "upgrade" the picture quality -- but this can be subjective). Another problem is the people that buy HD-TV's and don't realize what to get with it.

 

The format's name comes from the blue-colored laser used to read the disc. A blue laser has a shorter wavelength than the red ones used for DVD players (and infrared for CDs), and thus can pick out the much smaller physical data tracks on the disc, allowing one to pack more data on a given area.

 

 

 

 

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