New Optical Disc 1 Terabyte of Data

TDK Develops New Optical Disc That Holds 1 Terabyte of Data
**http://www.techpowerup.com/132610/TDK-Develops-New-Optical-Disc-That-Holds-1-Terabyte-of-Data.html
Monday, October 11 2010

Late last week, TDK demonstrated its technological prowess by displaying the prototype of a new optical disc that can hold 1 TB of data. The unnamed disc type holds data on both its sides, each with 16 recording layers, each layer holding 32 GB of data. Physically, the disc has the same diameter as today's CDs, DVDs, and Blu-ray discs at 12 cm, but is said to have double the thickness of a Blu-ray disc. It uses the same materials used in making Blu-ray discs, and also uses the same numerical aperture value of 0.85, which indicates that a player of this new medium should be able to read Blu-ray discs, too.

Many of Blu-ray's technologies (such as its video format) can also be ported to this new medium. As for propagation of the standard, TDK says that its creation is intended to be a highly proliferated standard, accessible to all classes of users from home entertainment to enterprise archival. The company, however, believes that manufacturers (of media, disc drives, and players) will have to play a bigger role in its commercialization. "Its commercialization depends on disc manufacturers," TDK said. Earlier this year, the Blu-ray disc association approved standardization of BDXL, an evolved Blu-ray disc that can hold 128 GB of data, an eighth of what this new disc can hold.