the blu-ray story

Let us start the story by talking about the grandfather and great grandfather of Blu-ray. It is abt CDs and DVDs.
Compact siscs came inti existance in the early 1980s. Suddenly, from the 1.44 Mb(Megabyte) storage offered by the now almost-extinct floppies, we had 650 Mb capacity. Around 1997, DVDs were introduced and immediatedly made an impact on the movie industry with its high quality digital audio/video and high storage capacity-4.7GB gor single layer and 8.4GB for dual layer in terms of storing. it supported two hours of standard-definition movie.
But then more changes had to happen. Development of High-definition TVled to High-definition audio/video, having higher bandwith(around 5 times that of DVD quality) Hence, a storage device was required to store data 5 times more than that stored in a dvd. Thus were born Blu-Ray Discs andc HD-DVD or advanced Optical Disk.
Blu-ray format was developed by Blu-ray Disc Association comsisting of companies like Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony,etc. They named it Blu-ray b'coz it required blue-coloured laser beam to read and write instead of the conventional red laser beam. As they were unable tp trademark a common word like "blue", they removed "e" from "Blue" and coined "Blue-ray".