29-12-2010, 10:59 AM
By
Harshil Dave
Final Seminar Report.HDSS.pdf (Size: 889.37 KB / Downloads: 394)
ABSTRACT
Colossal Storage Inc. has exclusive license patent rights on new ways of non - contact reading and writing with non destructive reading of information to a ferroelectric molecule. These methods will be used to develop the worlds first 2 D / 3D Area / Volume Holographic mass storage device. U.S. Patents, # 6,028,835 2/00 and # 6,046,973 4/00 for an integrated read/write head for ferroelectric optical media.
Keywords: Ferroelectric, holographic, storage, volume, UV, atomic switch.
For the first time in history, a design concept for fabrication of a laser semiconductor component used for reading/writing data to an optical holographic disk drive storage product will be explained. A unique new approach never tried before by any company, corporation, research facility, university, military, independent private or public research. The FE 3 D Holographic Optical Drive technology plans to push future storage densities of optical mass storage up to 40,000 Terabits/cu.cm. A comparison with 2 D Area magnetic hard drives of today is around at 60 gigabits.Optically assisted 2 D Area drives at 45 gigabits/sq.in. and 2 D Area contact recording AFM, STM, SPM or SFM, i.e. atomic force microscope and their derivatives,at about 300 gigabits/s.
This presentation attempts an up-to-date review of the status of holographic data storage and highlights the open technical issues. For holographic data storage to be of technical interest it has to compete with established storage techniques on the basis of cost per megabyte and performance. Key performance parameters are data rate, access time and storage density. For a large capacity holographic storage device, high density of the stored data at low media cost would of course translate into low cost per megabyte. All of this has to be provided reliably, i.e. at a bit-error-rate that compares favorably with conventional storage techniques on media with archival quality. Holographic storage demonstrations have shown the potential for the error free read out of a data page of one thousand by one thousand pixels in one millisecond for a data rate of one Gigabit per second.
INTRODUCTION
Holographic Memory is a simple optical imaging technique that stores digital information throughout the depth of storage medium as opposed to surface storage through conventional means .This enables massive increase in storage capacities over existing technologies and at the same time reduces the cost of storing massive amount of data in a randomly accessible digital format. Most holographic storage systems contain some components basic to the setup.
These are
->Laser Beam
>Beam Splitters to Split the Laser Beam
>Mirrors to direct the Laser Beam
>A liquid Crystal Display Panel
Lenses to Focus the Laser Beam
>Recording Material
>CCD Cameras