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Memory-Tech Corp. and Toshiba said late Tuesday that they have developed plans for a three-layer, 45-Gbyte HD DVD disc.
The super-high-density HD disc is constructed from a double-layer disc attached to a single-layer disc, according to Memory-Tech. The two companies did not release a timetable for the discs production.
Toshiba and its HD DVD disc are locked into a format war between it and Blu-Ray, led by Sony Corp. Both sides are in discussions to try and hammer out a compromise standard for the next generation of discs, although some reports have said that the balance is shifting in favor of Blu-Ray.
The hybrid discs are manufactured using existing technologies and production lines, according to Shiroharu Kawasaki, president and chief executive of Memory-Tech. Each disc uses a 0.6-mm thick dual-layer disc plus a 0.6-mm thick single-layer disc to create the hybrid, with each layer storing 15 gigabytes.
Toshiba also said that it had developed a dual-layer, dual-sided HD disc, complementing a dual-sided single-layer disc it had developed in December. This disc, however, holds just 38.5 gigabytes, as the disc uses a 0.6-mm dual-layer disc holding 30 giabytes bonded to a single-layer disc holding just 8.5 gigabytes.
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