Thursday, October 21, 2004


Angles Increase Optical Storage

Researchers from Imperial College London in England, the University of Neuchâtel in Switzerland, and Aristotle University of Thessaloniki in Greece have devised a way to fit 1,000 gigabytes of data on an optical disk the size of a DVD. One thousand gigabytes, the equivalent of 472 hours of film, is just over 200 times the storage of today's common 4.7-gigabyte DVDs.

Key to the researchers' method is a way to record multiple bits of information in a single pit rather than one. The pits are longer than they are wide, which makes them asymmetrical in terms of rotation. Information is encoded in the angle of a pit, and the method can distinguish among 332 different angles.

The multiplexed optical data storage disks would contain four layers of data that each store 250 gigabytes. The storage method could be ready for practical application within ten years, according to the researchers.

I'm. Totally. Speechless. O_o