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Sony si Panasonic prezinta discul optic de 1TB
In incercarea de a oferi un suport optic cu spatiu suficient de mare pentru a face fata noului standard video UHD (4K), Sony si-au unit fortele cu Panasonic si au venit cu ceea ce poarta numele de "Archival Disc". Acesta va fi oferit ca o solutie pe termen lung, roadmap-ul lui Archival Disc incepand cu varianta de 300GB (in vara lui 2015) si finalizand cu varianta de 1TB (la o data nespecificata). Cred ca prima intrebare care apare este "va fi compatibil cu standardul actual?". Well, da... Sony vorbeste despre asa numitul "inter-generational compatibility", deci putem spera la backward compatibility cu actualele BluRay-uri. Mai jos aveti si comunicatul de presa:
Quote:
Tokyo, Japan - March 10, 2014 - Sony Corporation ("Sony") and Panasonic Corporation ("Panasonic") today announced that they have formulated "Archival Disc", a new standard for professional-use, next-generation optical discs, with the objective of expanding the market for long-term digital data storage*.
Optical discs have excellent properties to protect themselves against the environment, such as dust-resistance and water-resistance, and can also withstand changes in temperature and humidity when stored. They also allow inter-generational compatibility between different formats, ensuring that data can continue to be read even as formats evolve. This makes them robust media for long-term storage of content. Recognizing that optical discs will need to accommodate much larger volumes of storage going forward, particularly given the anticipated future growth in the archive market, Sony and Panasonic have been engaged in the joint development of a standard for professional-use next-generation optical discs.
These efforts resulted in the formulation of "Archival Disc", a new professional-use next-generation optical disc standard, for which the technology roadmap, logo, and specifications are outlined below.
Roadmap
Both Sony and Panasonic aim to launch systems with a recording capacity of 300 GB per disc from summer 2015, onwards. In addition, both companies plan to leverage their respective technologies to further expand the recording capacity per disc to 500 GB and 1 TB.
Key Archival Disc specifications
Disc size (type) 300 GB (write-once)
Optical parameter Wavelength λ=405 nm (nanometers), Numerical Aperture NA=0.85
Disc structure Double-sided Disc (3 layers/side), Land and Groove Format
Track pitch 0.225μm (micrometers)
Data bit length 79.5nm (nanometers)
Error correction method Reed-Solomon Code
Crosstalk cancellation technology*1 and high-order Partial Response Maximum Likelihood (PRML) signal processing technology*2 have been employed to achieve both larger capacity and higher playback signal quality.
