22-09-2008, 10:25 AM
Definition
Holographic Versatile Disc (HVD) is an optical disc technology still in the research stage, which would greatly increase storage over Blue-Ray and HD DVD optical disc systems. It employs a technique known as collinear holography, whereby two lasers, one red and one blue-green, are collimated in a single beam.Current optical storage saves one bit per pulse, and the HVD alliance hopes to improve this efficiency with capabilities of around 60,000 bits per pulse. The HVD has a transfer rate of 1 gigabit/sec.