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Presented By:
Manu G.R
VIII sem ECE
CIT, Gubbi
HOLOGRAPHIC DATA STORAGE
Guide:
Veena Kumari H.M. M.Tech.,
Asst. Professor,
Dept., of ECE,CIT, Gubbi
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Introduction
What Is Holographic Storage?
Why Holographic Storage?
What Is A Hologram?
How Hologram is made ?Components
How a holographic memory works
Advantages
Comparison
Applications
Future
Conclusion
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INTRODUCTION
The storage of information and data has been an important issue since
men first drew pictures on the walls of caves. The methods of storing
data have changed over the years, especially now that we have CD,
DVD, HDD.
Scientist Pieter J. van Heerden first proposed the idea of holographic(three-dimensional) storage in the early 1960s.
Holographic memory is developing technology that has promised to
revolutionalise the storage systems.
Holographic data storage is a volumetric approach.
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What Is Holographic Storage?
Holographic storage is the computer storage that uses laser beams tostore data in 3 dimensions.
Holographic Storage is an optical technology that allows 1 millionbits of data to be written or read in a single flash of light.
Holography records through the full depth of the medium.
Holography enables transfer rates significantly higher than currentoptical storage devices.
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Why Holographic Storage?
Three dimensional data storage has the potential to store more data ina smaller space and at a quicker speed.
Parallel access to data i.e. Multiplex data pages in one location.
Fast data transfer rates. Competitive with other optical technology.
Thousands of holograms can be stored in the same locationthroughout the entire depth of the medium.
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Speed comparison (read and write)
In addition to storing larger amounts of data than other disc-based
media, holographic versatile discs access the data much faster as well.
CD: 1200 kbps/secDVD: 10.5 Mbits/sec
Blu-ray: 36.5 Mbits/sec
HVD: 1 Gbps/sec = 1024 Mbits/sec
What makes it Different?
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What Is A Hologram?
A three-dimensional imageformed by the interference oflight beams from a laser.
The intersection of two beamscreates an interference pattern
of bright and dark regions.
Examples:
bright and dark regions
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How Hologram is made ?
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Hologram Recording Process
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COMPONENTS OF A HOLOGRAPHIC
STORAGE SYSTEM
Blue-green argon laser
Beam splitters
Mirrors
LCD panel (SLM)
Lenses
Lithium-niobate crystal or photopolymer
Charge-coupled device (CCD) camera
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How a holographic memory works
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ADVANTAGES
Entire page of data can be retrieved quickly and at one time.
Offers storage of 1TB of data in a sugar cube sized crystal.
It offers high density storage.
Low Scatter: Low levels of noise in data recovery
It transfer rate is so high that a person can easily load the required
data.
Resistance to damage If some parts medium are damaged, all
information can still be obtained from other parts.
Efficient retrieval All information can be retrieved from any part of
the medium
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COMPARISON
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APPLICATIONS
VIDEO ON DEMAND PORTABLE COMPUTING
MULTIMEDIA CONSUMER AUDIO\VIDEO
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When?
Although standards were set in 2010, as previously mentioned,
HVDs are still not being produced. This is largely due to price problems,
although, as with any new technology, the price of the HVD will continue
to plummet as the hardware becomes more streamlined and research and
development costs are reduced.
THE FUTURE
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CONCLUSION
Holographic data storage is a convenient and effective way of data
storage.
This storage technique is rapidly gaining attention because of its
capacity (GB to TB) and high speed data storage.
Holographic data storage will help to create a new tapeless era in the
video production and broadcast industry.
No other storage technology under development can match
holography's capacity and speed potential.
Finally, Holography could provide a unique hardware device for searching databases rapidly.
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