DVD-R Undisputed Leader of Duplication Requirements
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DVD-R is a type of DVD disk that enables you to write onto it in multiple sessions. One of the problems with DVD-R disks is that you can only write to them once. With DVD-RW drives and disks, you can treat the optical disk just like a floppy or hard disk, writing data onto it multiple times. The first DVD-RW drives became available in mid-1997. The method of producing DVDs uses a desktop recorder to put a pre-mastered image on a disc that has a polymer dye layer, using a laser to burn the data into the dye. Recorders are available that work at single speed 2x, 4x and 6x. 2x drives are the most common, requiring 39 minutes for a full 650MB disc.
A DVD-R system allows desktop recording of compact discs using a DVD recorder attached a computer. You can create the four basic formats--DVD-ROM (compact disc read-only memory); DVD-ROM/XA (DVD-ROM extended architecture); DVD-I (compact disc-interactive) and DVD-A (DVD-audio)-although the last two are more consumer-orientated, DVD-A being like the music DVD you would use at home and DVD-I being for videos using a tv and a DVD-I player. DVD-I can also be used in training and at information points such as in museums or record shops.
Information about Design of DVD-R
The color of the Watershield DVD disc is related to the color of the specific dye that was used in the recording layer. This base dye color is modified when the reflective coating (gold or silver) is added. Some of the dye-reflective coating combinations appear green, some appear blue and others appear yellow. For example, gold/green discs combine a gold reflective layer with a cyan-colored dye, resulting in a gold appearance on the label side and a green appearance on the writing side. Taiyo Yuden produced the original cyanine dye-based gold/green DVDs, which were used during the development of the Orange Book standard. DVD discs are written from the inside of the disc outward. The spiral track makes 22,188 revolutions around the DVD, with roughly 600 track revolutions per millimetre.
Instead of mechanically pressing a DVD with indentations, a DVD-R writes data to a disc by using its laser to physically burn pits into the organic dye. When heated beyond a critical temperature, the area "burned" becomes opaque through a chemical reaction to the heat and subsequently reflects less light than areas that have not been heated by the laser.
Information shared about the DVD-R concept in above lines definitely going to enhance knowledge base of perspective customers across the globe and allow them to innovate with the concept to generate the best. |
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Author Resource:-
After graduating in electronics seven years ago, Nathan decided to get into the field of electronics. His expertise and knowledge of the latest electronic goods have made him a trusted and reliable name among people as far as seeking expert opinion before buying products such as DVD-R and Watershield DVD etc. is concerned.
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By :
Nathan Davies
Submitted
2009-12-29 07:41:44 |
Article From Article Mayhem
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