Sony and Panasonic have developed a new technology that will allow the layer capacity of Blu-ray disc to be increased from 25GB to 33.4GB per layer.Sponsored Links
Apparently, exisiting devices would just need a simple upgrade to read all 33.4GB or 66.8GB per disc.
To quote: "Sony and Panasonic have announced that they have developed a new optical disc evaluation technology that will allow the layer capacity of Blu-ray media to increase from 25GB to 33.4GB using existing Blu-ray laser diodes.
This would presumably allow existing Blu-ray hardware - including Blu-ray Disc players and burners - to play the proposed discs with a simple firmware upgrade.
Currently, disc evaluation is accomplished by analyzing disc jitter, but at higher capacity, that technique becomes unreliable. Sony and Panasonic resolved this by developing i-MLSE (Maximum Likelihood Sequence Estimation) evaluation index, which can perform the same function as jitter but at higher capacities."
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