DVD stands for digital versatile disk or digital video disks. Their development began in 1933 as the competition between the major technology companies Phillips and Sony began to heat up. Over the years, improvements and innovations have continued to expand, allowing for additional storage and DVD copying capabilities.
DVD ROM devices have data that can only be written, not read. DVD R and DVD+R can be written once and then read multiple times. DVD RAM, DVD-RW and DVD+RW have mechanisms that allow them to hold data that can be erased and then written multiple times. DVD Video and DVD Audio were created to produce and copy audio and video content. Each DVD type is compatible with different DVD burning software, and should be carefully reviewed before installation or use.
The standard size of a DVD is 12 cm and the average size for a mini DVD is 8 cm. Both sizes are compatible with most computer drives and DVD copying devices. Each DVD size typically used 650nm wavelength laser diode lights when in use.
The newer dual laser technology allows DVD R and DVD+R to store significantly more data than a single layer system; sometimes as much as 8.5 gigabytes per side. The storage capability is an important component when looking to copy DVD’s. The speed that it takes to copy each of the DVD’s depends on the drive size of the copying device and can vary from 4 minutes to 61 minutes in length for a single layer copy.
Feb 13