DVD+R: Difference between revisions
Undid revision 699370038 by 2601:844:4103:45C2:28DB:5F1C:36A4:6717 (talk) vandalism? need a citation at the very least |
Undid revision 699492943 by 88.113.162.167 (talk) Just go to any store, or any online retailer, nobody carries this format anymore, and they haven't for a couple of years now. |
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{{Optical disc authoring}} |
{{Optical disc authoring}} |
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[[Image:Sony Single DVD+R.JPG|thumb|right|Two DVD+R discs, showing the factory label on the front face and the visible, foil layer on the reverse]] |
[[Image:Sony Single DVD+R.JPG|thumb|right|Two DVD+R discs, showing the factory label on the front face and the visible, foil layer on the reverse]] |
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'''DVD+R''' |
'''DVD+R''' was a [[digital media|digital]] [[optical disc]] [[data storage device|storage]] format. A DVD+R was a [[DVD]] that could be written once and read arbitrarily many times. |
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A DVD+R disc |
A DVD+R disc held 4.7 [[Gigabyte|GB]] of storage, generally used for non-volatile data storage or video applications. |
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The DVD+R format |
The DVD+R format was similar to, but not compatible with, the older [[DVD-R]] format. |
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A DVD+R |
A DVD+R could 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. |
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== History == |
== History == |
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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 |
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 competed 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.<ref name = "dvd6cla.com">{{cite web | publisher = DVD6C LA | url = http://www.dvd6cla.com/news_20080125.html|title= DVD6C Announces New Licensing Program | accessdate = 2008-01-25}}</ref> |
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In October 2003, it was demonstrated that [[Dual layer recording|double layer]] technology could be used with a DVD+R disc to nearly double the capacity to [[DVD+R DL|8.5 GB]] per disc. Manufacturers have incorporated this technology into commercial devices since mid-2004.{{Citation needed|date=July 2008}} |
In October 2003, it was demonstrated that [[Dual layer recording|double layer]] technology could be used with a DVD+R disc to nearly double the capacity to [[DVD+R DL|8.5 GB]] per disc. Manufacturers have incorporated this technology into commercial devices since mid-2004.{{Citation needed|date=July 2008}} |
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On 25 January 2008, [[DVD6C]] officially accepted DVD+R and DVD+RW by adding them to its list of licensable DVD products.<ref name="dvd6cla.org" /> |
On 25 January 2008, [[DVD6C]] officially accepted DVD+R and DVD+RW by adding them to its list of licensable DVD products.<ref name="dvd6cla.org" /> |
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As of 2015, both DVD+R and DVD+RW have been discontinued and are no longer commercially available. |
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== Technical details == |
== Technical details == |
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DVD+R discs |
DVD+R discs carried up to 8.5 [[gigabyte|GB]] of data, approximately the same as [[DVD-R]].<ref>{{cite web |url = http://www.osta.org/technology/dvdqa/dvdqa6.htm |title=Understanding DVD |accessdate=2008-09-06 |publisher = [[Optical Storage Technology Association]] |year=2004}}</ref> Unlike [[DVD+RW]] discs, DVD+R discs could only be written to once. Thus, DVD+R discs were suitable to applications such as non-volatile data storage, audio, or video. This caused confusion because the DVD+RW Alliance logo is a stylized 'RW'. Thus, a DVD+R disc may have had the RW logo, but it was not rewritable. |
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DVD+R discs |
DVD+R discs had to be formatted before being recorded by a compatible DVD video recorder. DVD-R do not have to be formatted before being recorded by a compatible DVD video recorder, because the two variants of the discs are written in different formats (see [[DVD+VR]] and [[DVD-VR]] respectively). |
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The DVD+R format |
The DVD+R format was divergent from the DVD-R format. Hybrid drives that can handle both, often labeled '[[DVD±R|DVD±RW]]', are very popular since there is not a single standard for recordable DVDs. There are a number of significant technical differences between the 'dash' and the 'plus' format, although most users would not notice the difference. One example is that the DVD+R style [[Wobble frequency|Address In Pregroove]] (ADIP) system of tracking and speed control was less susceptible to interference and error, which makes the ADIP system more accurate at higher speeds than the [[Wobble frequency|Land Pre Pit]] (LPP) system used by DVD-R. In addition, DVD+R(W) had a more robust error management system than DVD-R(W), allowing for more accurate burning to media, independent of the quality of the media. The practical upshot was that a DVD+R writer was able to locate data on the disc to byte accuracy whereas DVD-R is incapable of such precision. |
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Additional session linking methods are more accurate with DVD+R(W) versus DVD-R(W), |
Additional session linking methods are more accurate with DVD+R(W) versus DVD-R(W), which resulted in fewer damaged or unusable discs due to buffer under-run and multi-session discs with fewer PI/PO errors.<ref>{{Citation | url = http://adterrasperaspera.com/blog/2006/10/30/how-to-choose-cddvd-archival-media/ | title = How To Choose CD/DVD Archival Media | first = Patrick | last = McFarland |publisher = Ad terras pera spera | date = October 30, 2006}}.</ref> |
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Like other 'plus' media, it |
Like other 'plus' media, it was possible to change the [[book type]] to increase the compatibility of DVD+R media (though unlike DVD+RW, it was a one way process). This was also known as bitsetting.<ref>{{cite web|work=CD freaks |url=http://www.cdfreaks.com/reviews/Increased-compatibility-DVD-bitsetting/ |type=review |title=Increased compatibility: DVD bitsetting |accessdate=2008-09-15 |deadurl=yes |archiveurl=https://web.archive.org/20080724063904/http://www.cdfreaks.com/reviews/Increased-compatibility-DVD-bitsetting |archivedate=July 24, 2008 }}</ref>{{citation needed| date = May 2013}} |
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== Recordable DVD capacity comparison == |
== Recordable DVD capacity comparison == |
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Revision as of 04:36, 20 March 2016
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DVD+R was a digital optical disc storage format. A DVD+R was a DVD that could be written once and read arbitrarily many times.
A DVD+R disc held 4.7 GB of storage, generally used for non-volatile data storage or video applications.
The DVD+R format was similar to, but not compatible with, the older DVD-R format.
A DVD+R could 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 competed 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.[1]
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.[citation needed]
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.[2]
As of 2015, both DVD+R and DVD+RW have been discontinued and are no longer commercially available.
Technical details
DVD+R discs carried up to 8.5 GB of data, approximately the same as DVD-R.[3] Unlike DVD+RW discs, DVD+R discs could only be written to once. Thus, DVD+R discs were suitable to applications such as non-volatile data storage, audio, or video. This caused confusion because the DVD+RW Alliance logo is a stylized 'RW'. Thus, a DVD+R disc may have had the RW logo, but it was not rewritable.
DVD+R discs had to be formatted before being recorded by a compatible DVD video recorder. DVD-R do not have to be formatted before being recorded by a compatible DVD video recorder, because the two variants of the discs are written in different formats (see DVD+VR and DVD-VR respectively).
The DVD+R format was divergent from the DVD-R format. Hybrid drives that can handle both, often labeled 'DVD±RW', are very popular since there is not a single standard for recordable DVDs. There are a number of significant technical differences between the 'dash' and the 'plus' format, although most users would not notice the difference. One example is that the DVD+R style Address In Pregroove (ADIP) system of tracking and speed control was less susceptible to interference and error, which makes the ADIP system more accurate at higher speeds than the Land Pre Pit (LPP) system used by DVD-R. In addition, DVD+R(W) had a more robust error management system than DVD-R(W), allowing for more accurate burning to media, independent of the quality of the media. The practical upshot was that a DVD+R writer was able to locate data on the disc to byte accuracy whereas DVD-R is incapable of such precision.
Additional session linking methods are more accurate with DVD+R(W) versus DVD-R(W), which resulted in fewer damaged or unusable discs due to buffer under-run and multi-session discs with fewer PI/PO errors.[4]
Like other 'plus' media, it was possible to change the book type to increase the compatibility of DVD+R media (though unlike DVD+RW, it was a one way process). This was also known as bitsetting.[5][citation needed]
Recordable DVD capacity comparison
For comparison, the table below shows storage capacities of the four most common DVD recordable media, excluding DVD-RAM. SL stands for standard single-layer discs, while DL denotes the double-layer variants. See articles on the formats in question for information on compatibility issues.
| Diameter | Disk Type | Data sectors (2,048 B each) |
Capacity | ||
|---|---|---|---|---|---|
| cm | Bytes | MB | GB | ||
| 12 | DVD-R, DVD-RW (SS-SL) | 2,298,496 | 4,707,319,808 | 4489.250 | 4.7 |
| DVD+R, DVD+RW (SS-SL) | 2,295,104 | 4,700,372,992 | 4482.625 | 4.7 | |
| DVD-R DL (SS) | 4,171,712 | 8,543,666,176 | 8147.875 | 8.5 | |
| DVD+R DL (SS) | 4,173,824 | 8,547,991,552 | 8152.000 | 8.5 | |
| DVD-R DS, DVD-RW DS (SL) | 4,596,992 | 9,414,639,616 | 8978.500 | 9.4 | |
| DVD+R DS, DVD+RW DS (SL) | 4,590,208 | 9,400,745,984 | 8965.250 | 9.4 | |
| DVD-R DS (DL) | 8,343,424 | 17,087,332,352 | 16,295.750 | 17.0 | |
| DVD+R DS (DL) | 8,347,648 | 17,095,983,104 | 16,304.000 | 17.0 | |
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See also
- DVD
- DVD recorder (DVDR)
- DVD-R DL
- CD-R
- DVD+R DL
- DVD-RW
- DVD+RW
- DVD+RW DL
- DVD-RAM
- MiniDVD
- MultiLevel Recording, an obsolete technology (with non-binary modulation)
- Blu-ray Disc
- Blu-ray Disc recordable
References
- ^ "DVD6C Announces New Licensing Program". DVD6C LA. Retrieved 2008-01-25.
- ^ Cite error: The named reference
dvd6cla.orgwas invoked but never defined (see the help page). - ^ "Understanding DVD". Optical Storage Technology Association. 2004. Retrieved 2008-09-06.
- ^ McFarland, Patrick (October 30, 2006), How To Choose CD/DVD Archival Media, Ad terras pera spera.
- ^ "Increased compatibility: DVD bitsetting". CD freaks (review). Archived from the original on July 24, 2008. Retrieved 2008-09-15.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help)
External links
- Data interchange on 120 mm and 80 mm Optical Disc using +R format (technical specification), ISO/IEC, 2005, 17344.
- Data interchange on 120 mm and 80 mm optical disc using +R DL format – Capacity: 8.55 GB and 2.66 GB per side (recording speed up to 16×) (technical specification), ISO/IEC, 2008, 25434.
- What's the difference between DVD-R and DVD+R? (Q&A), DVD demystified.