Pioneer showcases 16-layer 400GB optical disc
( Source from: Digitimes )
Pioneer is exhibiting its super multi-layer read-only optical disc which features 16 separate layers on a single side with 25GB storage capacity on each layer for a total capacity of 400GB at the IT Month fair taking place in Taipei.
The technology of the super multi-layer read-only disc is based on Blu-ray Disc (BD) with a breakthrough in material of reflective layers, according to Pioneer High Fidelity Taiwan. The specifications of the pick-up head (PUH) of the disc is the same as those for the PUH of blank BD discs, and therefore the Pioneer discs can be read on BD players, the company said.
According to Pioneer's internal roadmap, its super multi-layer technology development is read-only (ROM) discs in 2008-2010, rewritable discs in 2010-2012 and 1TB (1,000GB) disc in 2013, the company indicated.
| Comparison of main specifications between BD and Pioneer's super multi-layer | ||
| Specification | BD | Pioneer's super multi-layer |
| Storage capacity and number of layers | 25GB for single layer; 50GB for double layers | 400GB for 16 layers; 500GB for 20 layers |
| Material of reflective layers | Metallic | Dielectric |
| Track pitch | 25nm | 10&14nm |
| PUH | 405nm, 0.85 | 405nm, 0.85 |
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