Archive for February 11th, 2010

Blu-ray Disc and its features

We all know about DVD and its features. But few people only know about Blu-ray Disc. Let us know about Blu-ray Disc. It is similar to DVD with some extra features. It has the same physical dimensions as standard DVD’s and CD’s.
Blu-ray Disc also known as BD which is the next-generation optical disc format. It is developed to enable rewriting, playback, recording of high definition (HD) video and also stores large amount of data in it. Storage capacity of BD is more than fives the capacity of normal DVD’s and it can hold data up to 25GB on a Single-layer disc and 50GB on a Dual-layer disc.
BD uses blue-violet laser to read and write data. The name is a Combination of “Blue” (blue-violet laser) and “Ray” (optical ray). The BD format was developed by the Blu-ray Disc Association (BDA). BDA is a group of personal computer and media manufacturers, leading consumer electronics with more than 180 member companies from all over the world.

BD formats has classified into three types as

1) Rewritable (RE) formats,

2) Recordable (R) formats and

3) Read Only (ROM) format.

It can hold 9 hours of high-definition (HD) video on a 50GB disc. And 23 hours of standard-definition (SD) video on a 50 GB disc. Blu-ray Discs cannot play in normal players. It needs Blu-ray players. The solid rise in Blu-ray disc sales reduces in hardware prices. Blu-ray player is very cheap, which is range from $100 to $130. So we expect people to change from DVD’s to Blu-ray Disc in a future.