24332873 blu-ray-disc-ppt


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24332873 blu-ray-disc-ppt

  1. 2. Table of Content <ul><li>HISTORY </li></ul><ul><li>THE NAME </li></ul><ul><li>FORMAT OF BD </li></ul><ul><li>TYPE OF BD </li></ul><ul><li>THE TECHNOLOGY </li></ul><ul><li>COMPARISON IN BUILDING BD AND DVD </li></ul><ul><li>COMPARISON IN BEAM SIZE </li></ul>
  2. 3. <ul><li>CD VS. DVD VS. HD-DVD VS. BLU-RAY DISC </li></ul><ul><li>FEATURES OF BD </li></ul><ul><li>BLU-RAY’S DURABILITY ADVANTAGE </li></ul><ul><li>BLU-RAY DENSITY ADVANTAGE </li></ul><ul><li>ON GUARD </li></ul><ul><li>DO MORE WITH… </li></ul>
  3. 4. HISTORY 1 st GENERATION : Compact Disc (CD):-- 650/700MB It is with us for over 20 yrs. Wavelength of laser which reads data: 780nm Color of laser: Red 2nd GENERATION : Digital versatile disc (DVD):-- 4.7GB It offers high quality sound and video than CD. Wavelength of laser which reads data: 650nm Color of laser: Red
  4. 5. HISTORY <ul><li>3 RD Generation: </li></ul><ul><li>Blu-ray disc (BD):-- 25/50 GB </li></ul><ul><li>Next generation optional disc format. </li></ul><ul><li>Developed by blu-ray association (which includes Apple, Hitachi, HP, LG, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony). </li></ul><ul><li>Wavelength of laser that reads data: 405nm </li></ul><ul><li>Color of laser: Blue-violet which was developed by SHUJI NAKAMURA at NICHIA COPERATION. </li></ul>
  5. 6. The Name <ul><li>The blu-ray name is the combination of “blue”, for color of the laser that is used and “ray” for the optical ray. </li></ul><ul><li>The “e” in “blue” was purposefully left off, according to the manufacturers, because an everyday word cannot be a trademark. </li></ul>
  6. 7. Format of BD <ul><li>It comes in four different formats: </li></ul><ul><li>BD-ROM (read only): for reading recorded content. </li></ul><ul><li>BD-R (recordable): for PC data storage. </li></ul><ul><li>BD-RW (rewritable): for PC data storage. </li></ul><ul><li>BD-RE (rewritable): for HDTV (high definition television) recording. </li></ul>
  7. 8. TYPES OF BD <ul><li>SINGLE LAYER: </li></ul><ul><li>can hold data up to 25/27 GB that means 2hrs of HD video or about 13hrs of standard video. </li></ul><ul><li>DOUBLE LAYER: </li></ul><ul><li>can hold data up to 50 GB that means 4.5hrs of HD video or about 20hrs of standard video. </li></ul>
  8. 9. THE TECHNOLOGY <ul><li>Pits: spiral groves that runs from the center of the disc to its edge. </li></ul><ul><li>Track pitch: it is the distance between the two tracks (of pits) on the surface. </li></ul><ul><li>---------------------------------------------------------- </li></ul><ul><li>Disc store digitally encoded data in PITS. </li></ul><ul><li>---------------------------------------------------------- </li></ul>
  9. 10. THE TECHNOLOGY <ul><li>So, in blu-ray disc: </li></ul><ul><li>Pit size-- 0.15 microns (more than twice as small as the pits on DVD). </li></ul><ul><li>Track pitch– 0.32 microns </li></ul><ul><li>laser needed:-- blue-violet laser (450nm) </li></ul><ul><li>Data transfer rate: 36Mbps </li></ul>
  10. 13. Comparison in building BD AND DVD <ul><li>BD </li></ul><ul><li>Data is placed on top of a 1.1 mm thick polycarbonate layer. </li></ul><ul><li>Doesn’t suffer from BIREFRINGENCE. </li></ul><ul><li>Doesn’t suffer from Disc Tilt. </li></ul><ul><li>Hard coating is placed outside to protect from scratches or fingerprints. </li></ul><ul><li>DVD </li></ul><ul><li>Data is sandwiched b/w two polycarbonate layers, each 0.6 mm thick. </li></ul><ul><li>Suffer from BIREFRINGENCE. </li></ul><ul><li>Suffer from Disc Tilt. </li></ul><ul><li>No such hard coating is placed. </li></ul>
  11. 16. Comparison in Beam size
  12. 17. CD vs. DVD vs. HD-DVD vs. Blu-ray Disc
  13. 18. Features of BD <ul><li>With BD we can: </li></ul><ul><li>Record HDTV without any quality loss. </li></ul><ul><li>Instantly skip to any spot on disc. </li></ul><ul><li>Record any program while watching other on the disc. </li></ul><ul><li>Create playlists. </li></ul><ul><li>Edit or reorder programs recorded on the disc. </li></ul><ul><li>Automatically search for an empty on the disc to avoid recording over the program. </li></ul><ul><li>Access to web to download subtitles and other extra features. </li></ul><ul><li>And many more….. </li></ul>
  14. 19. BLU-RAY ‘S DURABILITY ADVANTAGE <ul><li>Various hard coating technologies make Blu ray disc most durable and family-friendly. </li></ul><ul><li>Hard coating technology provides resistances to: </li></ul><ul><ul><li>Finger prints </li></ul></ul><ul><ul><li>Marks </li></ul></ul><ul><ul><li>Scratches </li></ul></ul><ul><ul><li>Dust </li></ul></ul><ul><li>Much more ROBUST than today’s polycarbonate-based CD/DVD’s (and HD DVD’s). </li></ul>
  15. 20. Blu-ray Density Advantage <ul><li>Higher density enables better data seek times. </li></ul><ul><li>Shorter to travel for same amount of data results in the faster data seek. </li></ul><ul><li>Better for random access of data. </li></ul>
  16. 21. On Guard <ul><li>Blu-ray discs are better armed than current DVD’s. They come equipped with a secure encryption system – a unique ID that protected against video piracy and copyright infringement. </li></ul>
  17. 22. Do More With… <ul><li>More capacity , Density and Performance. </li></ul><ul><li>More Industry Support/Consumer Reach. </li></ul><ul><li>More Durable. </li></ul><ul><li>More interactive user experience. </li></ul><ul><li>More flexible content protection. </li></ul>
  18. 23. THANK YOU