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DVD+R is a digital optical disc storage format. A DVD+R is a DVD that can be written once and read arbitrarily many times. A DVD+R disc holds 4.7 GB of storage, generally used for non-volatile data storage or video applications. The DVD+R format is similar to, but not compatible with, the older DVD-R format. A DVD+R can be written only once, in contrast with a rewritable DVD formats such as DVD-RW or DVD+RW which can be rewritten multiple (1000+) times. == History == The DVD+R format was developed by a coalition of corporations—now known as the DVD+RW Alliance—in mid-2002 (though most of the initial advocacy was from Sony). The DVD+R format competes with the DVD-R format, which is developed by the DVD Forum. The DVD Forum initially did not approve of the DVD+R format and claimed that the DVD+R format was not an official DVD format until January 25, 2008.〔(【引用サイトリンク】 url = http://www.dvd6cla.com/news_20080125.html )〕 In October 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 since mid-2004. As of 2007, the recordable DVD market still shows little sign of settling down in favor of either format. Since almost all DVD writers sold today can record to both formats, this is not an issue for most people. On 25 January 2008, DVD6C officially accepted DVD+R and DVD+RW by adding them to its list of licensable DVD products.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「DVD+R」の詳細全文を読む スポンサード リンク
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