The formatting of the disc. One is used by a portable video game system and the other is a dvd player.
2006-10-09 18:32:08
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answer #1
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answered by Christina 5
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Both of the new formats, HD-DVD and Blu-ray, are based on blue lasers. Blue light has a shorter wavelength than the red light used in CD and DVD systems, allowing the laser beam to make a smaller spot on the disc surface. With each bit of data taking up less space on the disc, more data can be stored on a 4.7-inch disc.
As a result, discs can hold between 15GB and 30GB of data, depending on the variant of the format used, compared to current DVDs that can hold between 4.7GB and 9.4GB of data. That extra space is important if discs of the same size as DVDs are to be used to distribute movies and other content in quality comparable to high-definition television.
The main backers of the HD-DVD format are NEC and Toshiba. The competing format, Blu-ray, comes from a group of companies led by Sony and including Dell, Hewlett-Packard, Hitachi, LG Electronics, Matsushita Electric Industrial (Panasonic), Mitsubishi Electric, Philips Electronics, Pioneer Electronics, Samsung Electronics, Sharp, TDK, and Thomson Multimedia.
Hollywood movie studios (not consumers) will likely decide the fate of the two formats. The HD-DVD format could have the edge with the studios.
One main difference between the two is that HD-DVD discs are similar to current DVDs in that the recording layer is sandwiched between two 0.6 millimeter layers of plastic in the middle of the disc. This means existing production lines can be easily converted to manufacture HD-DVD discs.
The recording layer in a Blu-ray disc is 0.1 millimeters below the surface on the top of a 1.1 millimeter substrate. Because of this, this disc will require a new production line.
2006-10-10 00:43:28
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answer #2
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answered by ♫ sf_ca ღ 4
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HD-DVD is much better in every way, google it and you'll get heaps of stats that tell u the exact differences, but the main difference is that toshiba makes HD-DVD and Sony makes blu ray
2006-10-10 00:41:42
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answer #3
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answered by Anonymous
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