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DVD+R is a writable optical disc with 4.7 GB (4.37 GiB)
of storage capacity (more precisely, 2295104 sectors of 2048 bytes each).
The format was developed by a coalition of corporations, known as the
DVD+RW Alliance, in mid 2002. Since the DVD+R format is a competing format
to the DVD-R format, which is developed by the DVD Forum, it has not been
approved by the DVD Forum, which claims that the DVD+R format is not an
official DVD format.
October of 2003, it was demonstrated that double layer technology could be
used with a DVD+R disc to nearly double the capacity to 8.5 GB per disc.
Manufacturers have incorporated this technology into commercial devices
DVD+RW discs, DVD+R discs can only be written to once. Because of this,
DVD+R discs are suited to applications such as nonvolatile data storage,
audio, or video. This can be very confusing because the DVD+RW Alliance
logo is a stylized 'RW' (See photo, below). Thus, a DVD+R disc can have
the RW logo, but it is not rewritable.
DVD+R format is divergent from the DVD-R format. Hybrid drives that can
handle both, often labeled 'DVD±RW', are very popular since there is not
yet a single standard for recordable DVDs. There are a number of
significant technical differences between the dash and plus formats,
although most consumers would not notice the difference. One example is
the ADIP system of tracking and speed control being less susceptible to
interference and error than the LPP system used by DVD-R, which makes the
ADIP system more accurate at higher speeds. Also DVD+R(W) has a more
robust error management system than DVD-R(W), allowing for more accurate
burning to media independent of the quality of the media. Additional
session linking methods are quite a bit more accurate with DVD+R(W) versus
DVD-R(W), resulting in fewer damaged or unusable discs due to buffer
under-run and multi-session disks with fewer PI/PO errors.
other plus media, it is possible to use bitsetting to increase the
compatibility of DVD+R media.
of 2006, the market for recordable DVD technology shows little sign of
settling down in favor of either the plus or dash formats, which is mostly
the result of the increasing numbers of dual-format devices that can
record to both formats; it has become very difficult to find new devices
that can only record to one of the formats.
Wikipedia information about
DVD+R. This article is licensed under the GNU Free Documentation License . It uses material
from the Wikipedia article 'DVD+R'
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