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Blu Ray  Disc
 

Blu Ray Disc

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    Blu Ray  Disc Blu Ray Disc Presentation Transcript

    • WELCOME
    •  
    • 1 GENERATION: Compact Disc (CD) :- capacity 650/700MB Wave length of laser which reads data : 780nm Colour of laser : Red HISTORY
    • 2 GENERATION: Digital Versatile Disc (DVD) :- capacity 4.7GB Wavelength of laser which reads data : 650nm Colour of laser : Red
    • 3 GENERATION: Blu ray Disc (BD) :- capacity 25/50 GB wavelength of laser which reads data : 405 nm colour of laser : Blue- violet which was developed in 1996 by SHUJI NAKAMURA at NICHIA CORPORATION
    • THE NAME The Blu ray name is a combination of “ Blue ” for the colour of the laser is used and the “ ray ” for optical ray .
    • TYPES OF BD SINGLE LAYER: Can hold data upto 25/27 GB that means 2hrs of HD video or about 13hrs of standard video. DOUBLE LAYER: Can hold data upto 50GB that means 4.5hrs of HD video or more than 20hrs of standard video.
    • FORMATS OF BD
      • It comes in 4 different formats:
      • BD ROM (read only):- for reading recorded content.
      • BD – R (recordable):- for PC data storage.
      • BD – RW (rewritable):- for PC data storage.
      • BD – RE (rewritable):- for HDTV (High Definition Television) recording.
    • ADVANTAGES:
      • Hard coating technologies make Blu ray Disc most durable and family- friendly.
      • Hard coating technology provides resistance to:-
      • Finger prints
      • Marks
      • Scratches
      • Dust
      • Much more ROBUST than today’s polycarbonate – based CD/DVD (and HD DVD’s)
    • ON GUARD
      • It uses Data Encryption Standard (DES) that has a key length of 56bits.
      • A key block and disc ID are written into the ROM area to prevent illegal copying.
    •  
    •  
    • BDA :(Blu ray Disc Association) This association develops and licences Blu ray Disc technology. (in 2002)
    • Blu ray Movies
    • FEATURES OF BD:
      • With BD we can :-
      • Record HDTV without any quality loss.
      • Instantly skip to any spot on disc.
      • Record on one program while watching other on the disc.
      • Create play list.
      • Automatically search for an empty space on the
      • disc to avoid recording over a program.
    • PRESENTED BY: CHRISTINE JOSE K MCA Department Vidya Academy of Science and Techonology Thalakkottukara P.O, Thrissur, Kerala, India, Pin:680 501.
    • THANK YOU……