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3D optical data storage - overview and recent developments
Transcript of 3D optical data storage - overview and recent developments
It enables three-dimensional images (holograms)
It uses laser, interference, diffraction
The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present (three-dimensional)
V = 1cm ; λ = 400nm
Theoretical density limit 1 / λ
- reached by multiplexing of L/λ data pages, each containing A/λ bits of data, within the same volume V = AL.
bits in 1m (formula):
N on λ
GE (TM) optical disc uses 3.13%
=> 1TB on "standard DVD"
introduced: 1982, for computer data storage: 1985
capacity: 700 MB
Digital Versatile Disc
4,7 GB (single sided, single layer – common
17 GB (double sided, double layer – rare)
Capacity of optical storage media
How much information contains human DNA?
In the beginning it was the drums..
Magnetic drum memory
1950s and 60s.
The hard disk drive almighty
1956 (IBM 350): Storage capacity of 5 million characters (< 5 MB)
Capacity of magnetic storage media
Thanks for your attention!
Благодаря ви за вниманието!
Köszönöm a figyelmet!
Спасибо за внимание!
Ďakujem za Vašu pozornosť!
Mieczysław Wolfke (Polish) in 1920, work on x-ray microscopy
WL Bragg (Australian) in 1939
Dénes Gábor (Hungarian) won a Nobel Prize in 1971 for his invention and development of the holographic method
comes from the Greek words ὅλος (hólos; "whole")
γραφή (grafē; "writing" or "drawing").
can store information at high density inside crystals
Holographic Versatile Disc
: has the potential to become the next generation of popular storage media
Magnetic drum memory
had a capacity
Audio Cassette Tape
Early 1970s -late 1980s
Maximum Capacity: 1400KB
3.5" Floppy Disk
Years in Use:
1982 - Present
First used to record computer data in 1951 (UNIVAC I)
An I/O device, transfer
about 7200 characters/s
365 meters meters long
Years in Use:
1995 - 2002
The first one!
6TB on a 3,5" HDD
- official release of blu-ray: 2006
- capacity: 25 GB per layer (up to 4 layers = 128 GB)
Holographic data storage
3D optical data storage
The human genome contains the complete genetic information of the organism as DNA sequences stored in 23 chromosomes (22 autosomal chromosomes and one X or Y sex chromosome), structures that are organized from DNA and protein.
The human genome is estimated to contain some
- so (again, simplifying):
6 billion bits
We can denote each base pair using a minimum of 2 bits, which yields 4 different bit combinations (00, 01, 10, and 11). Then 4 DNA base pairs can be represented by 1 byte.
Blu-ray vs HD DVD
SONY Archive Disc
Sony introduce you a newly developed Optical Archive system. Using the system, helps to provide long-term data retention of you valuable media assets in a way that is simple and affordable.
- introduced: 2014
- capacity: 300GB - 1,5 TB
- price: about 7000$ (device), 35 - 250$ (media)"