What are the main technical improvements for Blu ray and hd dvd?

what are the main technical improvements for Blu ray and hd dvd?what claims are made concerning the superiority of one or the other?What are the main technical improvements for Blu ray and hd dvd?
It does not matter now Blue Ray seems to have one the contest......OOOOOOOr have they?



Bill gates seems to like HD Dvd. there may be some life left in it yet.
Yesterday the sole manufacture (Toshiba) discontinued HD-DVD the only HD format is Blue-Ray, the battle is over and Blue-Ray has won! So your question is irrelevant.



#1 technical improvement is Blue-Ray will be around, and HD-DVD is done. #2 You will be able to buy Blue-Ray movies and HD-DVD movies are going away.What are the main technical improvements for Blu ray and hd dvd?
Visually, there's no discernible difference to naked eye. (If there is one, you'd need a computer to find it.)



Now here's where Blu-Ray and HD-DVD differ...



Blu-Ray:



Full, uncompressed HD Audio (7.1, 8.1, etc)



720p, 1080i, 1080p High Definition formats.



Uses Javascript for the interactive menu system on each disk.



Somewhere in the realm of 30 Gigs of space per disk (and Dual Layers are coming soon, which means 60 Gigs...on a DVD sized disc.)



Scratch and dust resistant discs.



Backed by all of the major movie companies except Universal. (Even Wal-Mart now supports Blu-Ray as the HD format of their choice.)



Units start at $399.99 and up. Discs at $30.00 and up.



HD-DVD:



Dolby Digital, Dolby Pro Logic, DTS surround sound. (Some audio is compressed or not used at all to fit the feature on the disc.)



720p, 1080i, 1080p High Definition formats.



Interactive menu system on each disk. (Not sure if it's Java powered or not.)



Somewhere in the realm of 15-20 Gigs of space per disk (and Dual Layers not going to be available, which means one size fits all, pretty much.)



Backed by Universal and Microsoft. (Wal-Mart has officially dropped HD-DVD and the units in favor of Blu-Ray.)



Units start at $150.00 and up. Discs at $20.00 and up.



Another difference between the two systems....



PCs and Laptops can either have a Blu-Ray drive (watching movies) or a Blu-Ray burner (saving files on massive discs.)

HD-DVD has read only (watching movies) drives. No writers are available at the present time.



Toshiba has also dropped their support of HD-DVD (and they were partners behind it with Microsoft and a few others.)What are the main technical improvements for Blu ray and hd dvd?
Well, the reason that it's called the Blu-ray is because of the laser that reads the disc. The laser is at a different wavelength than regular dvd's and HD dvd's. The other players have a red laser, blu-ray has a blue violet laser. The reason is that it can read smaller information with more precision which means that the laser dot that reads the disc is smaller. That means that they can pack even more information on to one disc. And blu-ray is better than HD dvd for this reason. It can pack much more info on to one disc than it's now dead competitor.
At a guess you are trying to answer the same question for your TMA as me.



Have a read through the articles at www.guardian.co.uk and just search for Blu-ray and HD DVD.



Hope this helps