16-01-2013, 03:51 PM
BLU RAY DISC
BLU RAY DISC.ppt (Size: 595.5 KB / Downloads: 34)
INTRODUCTION
Blu-ray (BD) is a next-generation optical disc format.
The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data.
The companies that have jointly established the BD specifications are
Hitachi, Ltd
LG Electronics
Matsushitha Electrical Industrial Co. Ltd
Mitsubishi Electric Corporarion
CHARACTERISTICS OF BLU-RAY
Life Span
Content Protection
Cost
Capacity
Robustness of disc
Compatible
Life Span
In the case of ordinary discs, the disc life is less .
In the rewritable versions, as re-writing is done repeatedly to one area of the disc most probably, the inner perimeter limiting the disc life.
BDFS (Blu-ray Disc File Structure is designed so as to avoid this problem, by using a system that uses free disc spaces with equal frequency
Capacity
The Blu-ray disc enables the recording, rewriting and playback of HD video up to 27 GB of data on a single sided single layer. It is enough to put 2.5 hours of HDTV recording on it. It also can record over 13 hours of standard TV broadcasting
Robustness of Disc
Stronger resistance to scratches and fingerprints The protective layer is hard enough to prevent accidental abrasions and allows fingerprints to be removed by wiping the disc with a tissue.