Many of the companies behind the Blu-ray Disc optical video disc format unveiled prototype players here Tuesday, the first day of the Ceatec 2002 exhibition. Toshiba, meanwhile, gave the first public demonstration of its competing format.
The two formats, which are both still in the design stage, are based on blue lasers, which allow the discs to hold several times more data than DVD discs--up to 27GB per layer in the case of Blu-ray and 20GB per layer for Toshiba's Advanced Optical Disc.
|