IEC COLLEGE OF ENGIN. & TECH. GR. NOIDA Presentation Topic :- Blu - ray Submitted By: Submitted To:
Praveen kr. Tripathi Mrs. Shalini
Introduction Blu-ray (BD) is a next-generation optical disc format developed by the Blu-ray Disc Association (BDA) Apple, Dell, HP, Panasonic, Pioneer, Philips, Samsung, Sony etc. Warner, Paramount, Fox, Disney, Sony, MGM and Lionsgate
The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data.
Foundation Blu-ray disc (BD) is appropriately named after the blue laser used to write the data The first blue laser was developed in 1996 by Shuji Nakamura (Nichia Corporation) In 2002, an alliance was formed, called the Blu-ray Disc Association, including the likes of Sony, Samsung, Sharp, Hewlett-Packard, and Royal Phillips
The “e” is intentionally left out of the name due to trademark restrictions
Disc Characteristics The name Blu-ray is derived from the blue-violet laser it uses to read and write to the disc. The Blu-ray Disc system uses a laser operating at a wavelength of 405 nm to read and write data. DVDs and CDs use red and infrared lasers at 650 nm and 780 nm.
Shorter wavelength enables
Disc Characteristics Numerical Aperture measures the ability of a lens to gather and focus light. As the numerical aperture increases, the focusing power increases and the beam size decreases Courtesy Blu-ray Disc Founders “Blu-ray Disc Format White Paper”
Phase change implies that the disc section is either an amorphous or crystalline state. The reflectivity changes accordingly thus representing a binary bit
Blu-ray vs HD-DVD Data transfer rate: 54Mbps 36.55Mbps Blu-ray has bigger HD-DVD is more
hardware support. cost effective .
Cost 25 Gigabytes ,Recordable $12.50 Blu -ray Rewritable BD-RE - 25 GB 25 Gigabytes, Rewritable $15.50
Blu -ray BD-R Dual Layer - 50 GB 50 Gigabytes, Dual Layer $29.50
Cost Blu -ray Rewritable BD-RE Dual Layer - 50 GB 50 Gigabytes, Dual Layer $46.25
Blu -ray BD-R Dual Layer - 50GB 50 Gigabytes, Dual Layer, Recordable
Protection System Uses the Data Encryption Standard (DES) that has a key length of 56 bits
A Key Block and Disc ID are written into the ROM area to prevent illegal copying
6. Conclusions The next generation optical media battle is on going. Blu-ray seems to have the upper hand but the next two years will tell which one wins.
The Blu-ray Disc format for movie distribution offers two profiles for the creation of titles. It was designed to allow for the streamlined development of Blu-ray Disc (HD) and DVD-Video (SD) titles at the same time, if needed. Basic menus and navigation can be identical. It also offers many new functions that will benefit the author by offering flexible ways of creating disc content and the end users by offering new functionality compared to DVD-Video.