It has been suggested that this article or section be merged into DVD. (Discuss)
Dual Layer recording allows DVD-R and DVD+R discs to store significantly more data, up to 8.5 Gigabytes per side, compared to 4.7 Gigabytes for single-layer discs. DVD-R DL was developed for the DVD Forum by Pioneer Corporation, DVD+R DL was developed for the DVD+RW Alliance by Philips. Wikipedia does not have an article with this exact name. ... DVD (also known as Digital Versatile Disc or Digital Video Disc) is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ... A DVD+R disc The title given to this article is incorrect due to technical limitations. ... A DVD+R disc A DVD+R is a writable optical disc with 4. ... Pioneer Corporation (TYO: 6773), NYSE: PIO is a Japanese world leader in digital entertainment products, based in Tokyo, Japan. ... The DVD+RW Alliance is a group of electronic hardware, optical storage and software manufacturers who created and promote a format standard of recordable and rewritable DVDs, known as the plus format. ... Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world. ...
DVD recordable discs supporting this technology are backward compatible with most existing DVD players and DVD-ROM drives. Many current DVD recorders support dual-layer technology, and the price point is comparable to that of single-layer drives, though the blank media remains significantly more expensive. Currently the technology has severe problems with compatibility in DVD players. Dual Layer Drives will work with Regular DVD-R discs. In technology (especially computing), backward compatibility has several related but differing meanings: A system is backward compatible if it is compatible with earlier versions of itself, or sometimes other earlier systems, particularly systems it intends to supplant. ...
External links
Understanding Recordable & Rewritable DVD by Hugh Bennett
BurnWorld - Understanding Dual Layer DVD Recording
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Duallayerrecordable discs contain two organic dye recordinglayers (termed L0 and L1, respectively) between dual polycarbonate bases and semi-reflective metal layers separated by a transparent spacing layer.
Reflectivity of both recordinglayers of a duallayerrecordable disc is the similar: greater than 18 percent.
The reflectivity between the L0 and L1 layers, however, is greater than 50 percent because the upper (second) recordinglayer absorbs and reflects some of energy that is directed at the lower (first) recordinglayer L0 in order for organic dye to be recorded.
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