Contents
          Introduction
   Magnetic  and  conventional  optical  data  storage 
   technologies  are  approaching  physical  limits  beyond 
   which individual bits may be too small or too difficult 
   to store.
   Holographic data storage is an approach  of storing 
   information throughout the volume of a medium—not 
   just on its surface.
   With  the  rapidly  increasing  demand  for  increased 
   storage  capacity  in  a  smaller  space,  this  technology 
   offers an economy in price. 
               Features
    Next – Next generation Technology
    1 HVD = 5800 CDs  = 830 DVDs = 160 Blu-ray
    Media type : Ultra-high density optical disc
    Encoding :  MPEG-2, MPEG-4 AVC (H.264), and VC-1
    Capacity  theoretically  up to 3.9 TB
    Developed by HSD Forum
    Usage : Data Storage,
                     : High-defination video and the possibility of Ultra-high
                       defination video
    permits over 10 Kbits of data to be read and written in 
         parallel with a single flash    
       What Is Hologram ?
  A hologram is a recording of the optical 
   interference
  pattern that forms at the intersection of two
  coherent optical beams
  Signal beam
  Reference beam
  on the holographic medium.
       Types of Holograms
  • Transmission Hologram
   –Can be used to store data
   –Uses coherent light
  • Reflection Hologram
   –The kind you find on credit cards
   –Uses white light