http://www.ipodvideomovies.com/audio-cd-capacity/
The compact disc has been around since 1978, developed by Phillips and Sony. The reason it was developed was to take over for the Laserdisc as the industry standard digital audio disc. Since its invention, we have seen many updates on the compact disc technology. The most recent being the CD-R and DVD discs. With the CD-R, you can now burn your own discs at home, and then modify those discs at a later date. DVD technology allows us to record video onto a disc, where we used to only be able to record audio and data. As time rolls by, and the disc industry advances, we are presented with new forms of these technologies. The two new contenders are Blu-Ray discs and HD-DVD, here’s a little information about each of these new disc types.
1.Blu-Ray
This type of disc, also known as Blu-Ray Disc, is the next generation of optical disc. It was developed by the Blu-Ray Disc Association, a group of consumer electronic/PC/media manufacturers, including: Apple, HP, Mitsubishi, Phillips, Sony, and others. The Blu-Ray disc type was mainly developed for recording, rewriting, and playing back high-definition (HD) video. It’s also perfect for storing large amounts of data, exceeding previous DVD-R disc storage capabilities. It can hold more than 5 times the amount of information that a traditional DVD can hold, up to 25GB single layer, and up to 50GB dual layer. One of the main differences of the Blu-Ray disc is the type of laser that the disc is read with. Normal DVDs are read with a red laser, the Blu-Ray discs are read with a blue-violet laser. The main benefit of this change is the wave length of the laser types. The traditional red laser has a wider focus, so the blue-violet laser can be focused more precisely allowing more tightly packed data. This equals more data in less space on the disc, this results in the additional storage space available on the new Blu-Ray discs. These new discs are backwards compatible with regular DVDs, which they are expected to replace in the near future.
2.HD-DVD
HD-DVD discs, High Definition Versatile Discs or High Definition Digital Video Discs, are very similar to the Blu-Ray discs. This disc type is being developed by a group of consumer electronics/PC companies, headed by Toshiba. They also use a blue-violet laser to read the contents of the disc, which results in an increase in storage capacity compared to normal DVD discs. The HD-DVD can store 15GB single layer and 30GB double layer, making their storage capacity 10GB per layer smaller than the Blu-Ray. But Toshiba has announced a triple layer disc that can hold 45GB of information, and the HD DVD discs can hold both HD DVD and regular DVD information on one disc.
Right now these two disc types are battling it out to become the next generation of DVD disc technology, conjuring up images of the battle between Betamax and VHS in the 80’s. I guess we’re all wondering who’s going to come out on top? In my honest opinion, I believe that Blu-Ray will become the new standard. Both disc types offer HD capability and large data storage capacity, so it’s kind of hard to say which is better. The Blu-Ray, with its greater maximum storage capacity and the fact that it’s being backed by more of the large consumer electronic/PC/media manufacturers, I believe will win the battle. But it’s all still up in the air, so only time will tell.
About the Author:
Jason Cole and DiskFaktory offer great tips and information regarding CD Duplication. Get info about DVD Duplication as well by visiting http://www.diskfaktory.com/tips/CD-duplication-tutorials.asp
Article Source: ArticlesBase.com – New Cd and Dvd Technology – Blu-ray and Hd-dvd
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