2. HOLOGRAPHIC MEMORY

4. Random Access Serial Access ? What will be the next logical step in computer storage ? Parallel Access Parallel Access Is The Ability To Put Information In Any Form, And Take It Out At The Same Rate. In Other Technologies, We Get One Bit Stream At A Time. Higher Bandwidth Is The Result.

14. Recording data

15. Reading data

18. 1. Green writing/reading laser (532 nm) 2. Red positioning/addressing laser (650 nm) 3. Hologram (data) 4. Polycarbon layer 5. Photopolymeric layer (data-containing layer) 6. Distance layers 7. Dichroic layer (reflecting green light) 8. Aluminium reflective layer (reflecting red light) 9. Transparent base P. PIT Holographic Versatile Disc structure

20. Comparison With Other Storage Devices 1 Gbps 36 Mbps 11.08 Mbps Read/write speed 120 mm 120 mm 120 mm Disc diameter 407 nm 405 nm 650 nm Laser wave length 300 GB (max 3.9 TB) 50GB 9.4 GB Capacity HVD BLU-RAY DVD

22. Tapestry 300r holographic storage Developed by InPhase Technologies

24. Thank You Francis Sajay K P