Bluray disk technology is an advanced media format that offers superior features in comparison to the DVD disk technology. Blu-ray Disc Association developed this new advanced media technology which has established new standards of media quality and recording capacity. Numerous leading consumer electronics and PC companies are the members of the Bluray disk association. The Bluray DVD disk offers massive recording capability of 25 Gigabytes while on the other hand the dual layer discs can hold double the amount of data which is 50 GB. Further work is being done on the development of the Bluray disks comprising of four and eight layer that will have capacity of 200 GB. For short, Blu-ray disk is also called BD. The digital data is read from the Bluray disk by blue-violet laser.

Different laser type is used in Blu-ray technology in compression to the red laser in DVD format. Blue-violet laser used in Bluray is of shorter wavelength which is 405nm. The wavelength of the DVD format’s red laser is 605nm. The pit length in the Bluray disk is slightly smaller than that of DVD disk. This is the major reason that the Blu-ray disk can hold more data amounts. More pits mean more recording capacity.

Bluray disk format is more robust and reliable than HD DVDs. Many formats of Bluray media technology has been introduced into the market which are BD-ROM (Read Only), BD-RW (re-writable), BD-R (recordable) and BD-RE for High definition TV recording. The structure of Bluray is different from the DVD disc. The protective layer of the Blu-ray media disk is 0.1mm and the disk’s thickness is 1.1mm. The recording layer in Bluray disk is closer to the recorder.

Therefore the blue laser of Bluray will have to go through less material for reading/recording data. The smaller pits in Bluray disk have boosted its recording capacity. The coating of the Bluray disk’s layer is very hard because the data layer of the Blu-ray media disc is closer to the surface. That is why the Blu-ray disks offer more resistance and protection against fingerprints and scratches. The blue-laser packs the data more densely onto the Blu-ray disc as compared to the red laser DVD technology. The data layer is very much closer to the Bluray disc’s surface. 4.7 GB data can easily reside on a DVD disk (single layered) while the dual layered disc can hold 8.5 GB data.

The Blu-ray disks are capable of packing 25 Gigabytes of information on a single side. While at some point, the Bluray disk format will be able to store as much as 500 GB of data. Bluray disk format supports higher bit-rates through out its operation time and ensures high quality data storage. Higher bit-rate in Blu-ray disk technology leads to better color depth, quality and higher resolution of video/audio. More amount of information is processed each second in the Bluray disc technology. Exceptional rendering results in more cinematic and rich presentation. The enhanced colors, extra detail and high quality resolution of Blu-ray can be really enjoyed on projection screen of home theater or a flat panel High definition Television. Picture & sound quality, media durability of Bluray disk technology are really outstanding and unparalleled in comparison to the DVD format.