TDK has developed a prototype Blu-ray Disc that can store twice as much data, and record it at twice the speed, as existing Blu-ray Discs.
The disc, unveiled at a TDK exhibition in Tokyo this week, can record data at 72 megabits per second, double the 36 mbps rate for current Blu-ray Discs. TDK increased the write speed by using a more powerful laser and making some changes to the material of the disc"s recording layer, says Nobuyuki Koike, a spokesperson for TDK.