A Presentation

On

Fluorescent Multi-Layer Disc

Guided By Presented By

Mr. Prahlad Kumawat Rahul Kumar Mahaych

WHAT IS FMD?

• Fluorescent Multilayer disc is a new technology developed by Constellation 3D Inc.

• It stores digital data in three dimensions.

• It is a readable and re-writable disc.

• It is an optical data storage disc, simialar in size CD-ROMs And DVDs.

NEED OF FMD?

• Increased disc Capacity

• Quick parallel access and retrieval information.

• Media tolerances.

• Usage Flexibility.

OPERATING PRINCIPLE

The FMDs are works on the phenomenon of PHOTOCHROMISM.

• The selection of fluorescent material.

• Obtain fluorescent properties.

• Simulation and Emission.

• Filteration and Finish.

Model of FMDs

TECHNOLOGICAL PROCESS OF MANUFACTURE

HOT STAMPING:-Pressing of sheets.

Formation of layer.

Filling the pits.

Pressing of informational layers.

• Technology Used:- WORM(Write Once Read Many)

• Two Rules to be followed while recording.

1. The write laser should able to turn the fluorescense on or off

2. Threshold power of laser for recording and less power for reading

FMD RECORDING

FMD READ DEVICE• Reading process is carried out with

the help of a photosensitive element.

• Device can read low-power fluorescense of 10 MHz.

• Reading speed upto 1GB/sec.

• Mechanical speed of the derive is 450 times lower than that of DVD.

CD-ROM Vs FMD

COMPRASION OF DISC LAYERS

PARAMETERSPARAMETERS CDCD DVDDVD FMDFMD

1.Disc Diameter 1.Disc Diameter 1.2mm1.2mm 1.2mm1.2mm 1.2mm1.2mm

2.Capacity 2.Capacity 750MB750MB 4GB 4GB 50GB+50GB+

3.Wavelength3.Wavelength 780nm780nm 650nm650nm 480-530nm480-530nm

4. Distance b/w 4. Distance b/w TracksTracks 1.6micron1.6micron 0.85micron0.85micron 0.80micron0.80micron

5.No.of layers5.No.of layers 11 22 1212

CD vs DVD vs FMD

APPLICATIONS

Data warehouses.

E-commerce related data mining.

Storage of very high detailed archive of maps.

PVR (Priya Village Roadshow), HDTV.

Ability to store a large amount of data in uncompressed format.

ADVANTAGESPrevents problem of interference since it uses an incoherent fluorescent light.

Compatible with CD and DVD formats with more storage area and faster access.

Fluorescent technology do not require special manufacturing conditions.

Cost of production of FMD is relatively cheap.It consists multiple data layers, Capacity of each

data layer is 4.7 GB

REFERENCES

www.en.wikipedia.org/wiki.

www.seminartopic.org.

www.edu.five.org

CONCLUSION

Man’s need for additional storage space is increasing .

The FMD Digital Cinema disc has the potential to provide a secure, removable, single disc distribution method.

The FMD can provide us with a staggering 140 GB of storage space seems to be an enticing solution for the storage- hungry masses.

Thank You