Blu-ray Disc (data base), the technology adapted to Televisions High-definition

This new format was developed to allow the recording, the gravage and the reading of the video High-definition (HD), but also to store a great quantity of data. The name Blu-ray is derived from the technology which is at the base of this format and which uses a purple blue laser for reading and engraving data. The name is a combination of “Blue” (the purple blue laser) and of “Ray” (optical ray). The format Blu-ray Disc was developed by the BDA (Blu-ray Disc Association), a leader group in the field of the consumable electronic ones, the personal computers and the media and which gathers more than 180 companies members everywhere in the world.

Concerning its specificities, this format offers more than five times the storage capacity of the traditional DVD of today and can support until 25GB on a disc on only one surface and until 50GB on a disc on double surface. Moreover, one can put more than 9 hours of video high-definition (HD) on a disc of 50GB and approximately 23 hours of video of standard definition (SD) on a disc of 50GB. The format also supports the audio formats with high-definition and without loss of sound. As for its resistance, the DVD Blu-ray do not require for cartridge of protection because Blu-ray takes care some in the place, which makes the disc much more resistant to the scratches and the digital fingerprints that the traditional DVD, while preserving same appearance however.

On the level of the costs, the Blu-ray products will be probably expensive in the first times because of low volumes of production, but that will not be a problem very a long time since one envisages already a broad product range relating to Blu-ray (readers, recorders, engravers, media, etc) what normally will help to lower the production costs in general because volumes of production will be increased. Thus, as soon as the series production begins from the components for the Blu-ray products, one expects that the prices drop quickly. But right now, the principal film studios strongly support the Blu-ray format because it is said successor of format DVD of today, but two formats (Blu-ray and DVD) will surely cohabit for a long time still while waiting for that the TVHD are more widespread.