DVD,HDVD and what hell is BLUE tOOTH ?

Answer 1

Whoa....let's back up a little bit. We are confusing terms. I think you are asking the difference between "DVD, HD-DVD and Blu-Ray". These are all related terms. There is no such thing as HDVD and Bluetooth is a wireless technology and not even related to movies on disc.

DVD, HD-DVD, Blu-Ray are 3 different formats recorded on a disc. DVD has been the standard for many years as the default medium for movies and made VHS obsolete for several reasons; costs, storage capacity, video resolution, audio quality, physical size and longevity. VHS was strictly analog, stereo, 480i and degrades over time. DVD supports 480p, widescreen, multiple languages, cheaper to produce and can fit all those extras.

Recently, HD-DVD and Blu-ray came on board because there has been a larger demand to make all movies high definition. In order to do this, they needed to find a new standard. DVD's stored up to 8.5GB. It takes approximately 10GB for an hour of high def video. The industry split into two and went to develop HD-DVD and Blu-ray. Both support up to 1080p. The problem is that both are not cross-compatible with each other. They are proprietary technology, which requires unique players to read them. There is a cyberwar, which brings all us back to the 80's when Betamax and VHS were duking it out.

The significant difference between the two is the maximum storage capacity. Right now, HD-DVD is 30GB and Blu-ray at 50GB for dual-layer. Blu-ray has a slight lead on paper. Minor difference is that Blu-ray has a faster bit-rate, but I don't want to go into too much detail. If you want more information, check the web site listed below under Source.

So, you ask which one do you get? Well, I hope you at least have a DVD player. If you do, then great. Stay that way until there is a grand decision between HD-DVD and Blu-Ray. Then, you can invest money into a new DVD players. BTW, a new HD-DVD or Blu-Ray DVD player will set you back at least $1,000. Yes, insanely expensive!!! Also, if you want to take advantage of any of these new DVD formats, you also need to buy a new HDTV. Basically, you need to spend at least $3,000 to move up to high definition DVD format.

Answer 2

Digital Video Disc, High Definition Video Disc (pretty sure)
bluetooth is a wireless communication between phones, wireless headsets, computer keyboards, etc...