3d memory storage s.anjaneyulu

8/9/2019 3d Memory Storage S.anjaNEYULU

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To increase data storage capacity by using

the space within the crystal that is been used

in 1-D and 2-D storage device.

To get less susceptible to hacking,data theftproblem and data loss due to external strain.

Speed retrieval,transfer and search of data.

Accurate reference of required address

within a crystal with page of information.

To avoid multiple read/write head complexity.


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The process for encoding data onto the signalbeam is accomplished by a device called a

spatial light modulator (SLM).

The SLM translate the electronics data of 0sand 1s into an optical checkerboard pattern of

light and dark pixels.

Light from a single laser beam is split into two

beams, the signal which carries the data and thereference beam.


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At the point of intersection of the reference

beam and the data carrying signal beam, the

hologram is recorded in the storage medium.

A chemical reaction occur in the medium on

intersection of both beam cause hologramstored.

By varying the reference beam angle,

wavelength, or media position many different

holograms can be recorded in the same

volume of material.


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HOWITWORKS?

First there is an urgent need of translating

electronic code of 0s and 1s to light beam

of light and dark pixel pattern.

So the above work is done through SLM

and storage medium.

Here the intersection of both light beam

from SLM on crystal cause to form

holograms into the bulk of the crystal.


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3-D Disk Drive Mechanism


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Storing of information within the volume of

storage material is done through multi-layer

storage technique.

In this technique the data are stored into the

bulk of the material in hologram using only one

read/write head in SLM.

Here the information is arranged in array ofholograms.


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Read/Write Head


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To read or write any data here only one

head is enough.

The head here is nothing but the two beam

of SLM that does the whole work.

We write into the bulk of material in multi-

layer by changing the angle ,wavelength

position of the beam.

While reading we use only one beam which

incident on required hologram projected onto

a detector that reads the data in parallel.


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Performance and AdvantagesMaximum data storage limits we have reached today

15.9G.B on a double-layer, doubled sided DVD.180 GB onhard disk.

Whereas this system that can store about a terabyte ofinformation (thats over 15,000 CDs!) on the crystal the size

of a sugar cube!

The multi-layer system is optically transparent andhomogeneous .


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Unlike other technologies that record one databit at

a time, holography allows a million bits data to be

written and read in parallel with single flash of light.

It allows 1 million bits of data to be written or read in

a single flash of light through SLM.

This enables transfer rate significantly higher than

current optical storage devices.

Performance and Advantages

(Continues)


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This will offer symmetrical infinite double sided disc toread and writes for the retention of data storage for ten-

years or more with drive densities of

200terabits/sq.in.and up.

This will allow the holographic optical nanotechnologydrive to hold more data than any type of drive and

delivered data much faster.The patents on a semiconductor read/write head for

device raise data storage densities by a factor of 100 or

more and will add at least 1000 times the data storage

capacity per peripheral storage footprint and data

transfer rates over 100 G bits/sec.


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3d memory storage s.anjaneyulu

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