BLU -RAY DISC
TECHNOLOGY The thrust for an advanced format of data storage in optical storage media has led to the evolution of BLU-RAY DISC (BD). Blu-ray, also known as Blu -ray Disc (BD) is the name of the next-
generation optical disc format and is the successor of present generation optical discs (2nd generation) like CD''s, DVD''s HD-DVD''s. The Blu ray technology has changed the very definition of optical storage media by phenomenally improvised technology. Gone are the days when the quotation was "The sky is the limit." Now a data up to a 100 GB can be stored on a Blu-ray disc which exactly looks like a normal DVD or CD, thus leading to a revolution in the history of optical storage medium. The necessity for a next generation discs had eventually begun in 1994 even before the commercialization of the DVD in 1996. The then scientists predicted the limitations of the DVD format and begun working on BD even before DVD''s release. Due to the advanced technology used in BD''s they have high storage capacity,advanced security,privacy features and their high A/V quality O/P of the media files make them quite unique and edge over its competitors like HD -DVD''s and DVD''s. Presented the design, purpose, along with the technical and structural aspects of Blu - rays discs (BD) in comparison with with HD -DVD, DVD'' and CD''s in terms of capacity,data transfer rates etc along with their advantages and disadvantages. Writers.............Anirudh Naveen