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Fourth Generation Optical Discs
Transcript of Fourth Generation Optical Discs
"Layer-Selection-Type Recordable Optical Disk", term coined by Hitachi in 2003 for a next-generation optical disc technology
The technology uses the photosynthetic pigment bacteriorhodopsin created from bacteria.
Fourth Generation Optical Discs
an optical disc technology developed between April 2004 and mid-2008 by HSD (Holography System Development) Forum which includes the following companies: Sony, Hitachi, Mitsubishi, Apple, Fujifilm, Konica, LiteOn, and Nintendo.
could store up to several terabytes of data on an optical disc 10 cm or 12 cm in diameter.
It employs a technique known as collinear holography, whereby a green and red laser beam are collimated in a single beam.
encoding: MPEG-2, MPEG 4 AVC (H.264), HEVC (H.265) and VC-1
usage: High Definition video, Quad HD and the possibility of Ultra HD
allows much larger data storage densities than DVD, HD DVD or Blu-ray Disc, by allowing the use of a large number of data layers in a single disc.
In 2005, Japanese engineers introduce the disc as a tungsten oxide film to LS-R as an inorganic electrochromic film. This 20-layer CD-sized disk can provide 1TB data storage.
PCD (Protein-Coated Disc)
PCD is being developed by a Harvard Medical professor
It involves coating a normal DVD with a special light-sensitive protein made from a genetically altered microbe, which would in principle allow storage of up to 50 Terabytes on one disc.
The information in such discs would be highly dense, due to being stored in proteins that are only a few nanometres across. However, a method to address individual protein molecules to read and write information to and from them would have to be developed in order to achieve the theoretical 50 TB capacity. Practically, capacity would probably be limited by the size that addressing light can be focused to, so a DVD-sized disc might be able to hold ~50 GB, or perhaps ~240 GB if near-field optics were used.
PS4 Protein Coated Disc (PCD) – Blu Ray Alternative
The technology uses the photosynthetic pigment bacteriorhodopsin which is created from bacteria. The light-activated proteins are called bacteriorhodopsin which are found in the membrane of a salt marsh microbe. When exposed to sunlight, they temporarily convert to a series of intermediate molecules. This property allows the proteins to act as individual bits in a binary system.
Other fourth generation optical discs
Similar to the LS-R when it comes to data capacity is the TeraDisc created by Mempile, an Israeli company.
It uses light-sensitive molecules to create hologram-like matrices that can be used to store a full terabyte of data on a single disc.
developed by D Data Inc., is based on the 3D optic technology originally developed for FMD (Fluorescent Multilayer Disc). The company that developed FMD, however, was shutdown after it was revealed that their product was a fake. The DMD disc is said to store up to 100GB of data.
The fascinating thing about DMD is that it does not have metallic layers which makes the disc nearly transparent.
invented by a Romanian scientist, is the 3D version of a CD-ROM. It was first presented in 1999 and has gained recognition in 21 countries. It can store 10TB with possibility of a whooping 1PB of data storage!
"optic tridimensional multilevel memory"
it can store data in over 10,000 different levels inside a glass disk 10 mm high and 120 mm in diameter.
The disk can be used for at least 5 millenium (which is the lifespan of the glass)! That's innovation.
DMD (Digital Multilayer Disk)
Largo, La Maria D.
De Vera, Fulgencio