The base specification of format HD DVD are working in the production of such disk which have to 10 working slots and as result a working volume of 150 Gb. Not so long time ago we wrote about a group of creators which intended in the nearest time to present the three-layered disk, which have capacity to 51 Gb (17 Gb in one layer).
The first companies, in which is ready the working prototype of this disk became Toshiba. Producer certifies, that the expenditures for the addition of the third operating layer are minimum and disk has the same physical structure, as earlier solutions from the same format.
While Toshiba publicly presented its achievements, Ritek closed doors. As it was spoken to the presentation Of ritek, this producer took a step further. it also has in his active product the three-layered disk HD DVD and furthermore, already developed design for the production of the ten-layered disk . Last development also can be used by Ritek in the production of disks blu-ray, which will give volume of 250 Gb in one optical disk.
The basic problem, which prevents the commercial introduction of ritek developments , is the absence at the current moment of the laser diodes with a sufficient power for reading and writing in additional slots.