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HD DVD
Reading: H D D buoy D
Full spelling: High Definition DVD
Field:
Storage > optical disk > DVD > HD DVD
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Standard of the bulk optical disk which the DVD forum decided, becomes the succession of DVD. Toshiba and NEC proposed jointly have designated specification as the base, it was approved in 2003 November.
HD DVD standard is conformed to AOD standard almost. The royal purple laser of wave length 405nm is used in reading, with read-only HD DVD-ROM standard at single sided monolayer the memory capacity of 30GB has at 15GB and 2 layer. With the rewriting possible type standard which presently is in the midst of deliberating, the schedule which becomes 40GB at single sided monolayer 20GB and 2 layer.
The largest feature of HD DVD is the compatibility whose current DVD standard is high. In case of the single sided 2 layer record media, the baseplate of 1 layers 0.6mm is pasted 2 same as DVD-ROM and 1 disks are formed by the fact that it adjusts. In addition, numerical aperture of the pickup (0.65) it is the same as DVD standard. Those where the HD DVD equipment is developed with the height of such compatibility, as a superior interchangeable type of DVD equipment have become easy. In addition, also production facilities of the HD DVD media be able to divert those of the DVD media, The Blu-ray Disc standard which does not have of current DVD standard the compatibility almost it is contrast. |
HD DVD-R
Reading: H D D buoy D earl
Field:
Storage > optical disk > new generation DVD > HD DVD-R
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just one time optical media standard of the postscript type which can do the entry. It is approved with the DVD forum which centers Toshiba. In addition, there is playback private HD DVD-ROM, HD DVD-RW of rewriting possible type and HD DVD-RAM in HD DVD standard.
As a record media, already there are 2 types of 1 layer 15GB model and 2 layer 30GB model of sale being completed, paste together 2 0.6mm thick disks same as existence DVD and playback private HD DVD-ROM and HD DVD-RW and of rewriting type they adopt the structure which forms 1 disks.
The next generation DVD standard was groped also the standardization of Blu-ray Disc standard, but you did not look at conclusion. The HD DVD camp had sold the compatibility of the media of DVD, but trick of correspondence has been conspicuous e.g., development of HD DVD drive of the prayer and the recorder etc sends,
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HD DVD-RAM <HD DVD-Rewritable>
Field:
Storage > optical disk > new generation DVD > HD DVD-RAM |
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One of rewriting possible HD DVD standard. It has the capacity of 20GB one side concerning more.
With standard of rewriting possible HD DVD, there is standard in other things, is called “HD DVD-RW”. Originally, the name was used vis-a-vis HD DVD-Rewritable standard, as for HD DVD-Re-Recordable the abbreviation “of HD DVD-RR” was given, but in 2005 November, there was announcement of name modification from the DVD forum, in HD DVD-Rewritable standard it came to the point of being able to use the naming “HD DVD-RAM”.
The record aspect of the HD DVD-RAM disk is designed to be structure of the same land as DVD-RAM/groove type, as DVD±RW HD DVD-RW which adopts the same groove type at capacity the around is superior more, but structure being complicated, multilayer conversion is difficult, it assumes that also production cost is high. If the HD DVD-RAM disk more, it has the capacity of 20GB, but when it makes two layer, it assumes that structure of the disk becomes complicated, only the capacity about of 30GB
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HD DVD-Re-recordable <HD DVD-RW>
Reading: [eichideideibuideirirekodaburu]
Field:
Storage > optical disk > new generation DVD > HD DVD-Re-recordable |
One of rewriting possible HD DVD standard. It has the capacity of 15GB one side concerning more.
With standard of rewriting possible HD DVD, there is “a HD DVD-Rewritable” standard in other things, is called “HD DVD-RAM”. Originally, the name was used vis-a-vis HD DVD-Rewritable, as for HD DVD-Re-Recordable the abbreviation was given, but in 2005 November there was announcement of name modification from the DVD forum, reached the point where it points to HD DVD-Re-Recordable.
The record aspect of the HD DVD-Re-recordable disk is designed to be structure of the same groove type as DVD±RW, the same land as DVD-RAM/HD DVD-RAM which adopts groove type in recording density the around is inferior more, but structure being simple, production cost is cheap. HD DVD-RAM when it makes two layer, because structure becomes complicated, is said that capacity becomes 30GB, but HD DVD-Re-recordable with as two layer it is seen that 30GB of more time can be guaranteed.
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HD DVD-Rewritable <HD DVD-RAM>
Reading: The h D D buoy D lira it is painful the bull
Field:
Storage > optical disk > new generation DVD > HD DVD-Rewritable
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One of rewriting possible HD DVD standard. It has the capacity of 20GB one side concerning more.
With standard of rewriting possible HD DVD, there is standard in other things, is called Originally, the name “of HD DVD-RW” was used vis-a-vis HD DVD-Rewritable standard, as for HD DVD-Re-Recordable the abbreviation “of HD DVD-RR” was given, but in 2005 November, there was announcement of name modification from the DVD forum, in HD DVD-Rewritable standard it came to the point of being able to use the naming
The record aspect of the HD DVD-Rewritable disk is designed to be structure of the same land as DVD-RAM/groove type, as DVD±RW HD DVD-RW which adopts the same groove type at capacity the around is superior more, but structure being complicated, multilayer conversion is difficult, it assumes that also production cost is high. If the HD DVD-Rewritable disk more, it has the capacity of 20GB, but when it makes two layer, it only the capacity about of 30GB can have.
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