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- June 11, 2009
Blu Ray Disk
The entertainment industry in the latest century has given the world some of the biggest evolutions. Starting from the CD and moving forward with the DVD, entertainment has actually come to its customers door step. People did not have to go to the cinema hall to watch the movie they liked. They could experience it all at the comfort of their homes mainly because with DVD’s came the DVD player. High picture quality, audio and video resolution meant that people did not have to waste time at a cinema hall anymore. They could get the same experience in their living room.
After the DVD was engulfed by the world, next came the Blue ray disk with more features. The Blu ray disk has taken the optical disc technology to a higher level as it is mainly used for high-definition data and video storage. Another dissimilarity between a DVD and a Blu ray disk is that a DVD uses a red laser, whereas the Blu ray disk uses a blue laser. The name ‘Blu ray’ was a result of the laser color that was used in the disk.
The Blu ray disk was developed by the Blu ray disk association; a group consisting of some of the highly known names in the consumer electronic trade. Some of them include renowned names such as Sony, Hitachi, Philips, Samsung, Panasonic, Hewlett Packard (HP), etc. The format in a Blu ray disk enables recording, rewriting and the playback of high definition video.
Compared to a DVD, the biggest advantage a Blu ray disk has is the high storage capacity. The storage capacity of a single layer Blu disk is 25GB and the dual-layer Blu ray disk can do up to 50GB. It also has advanced audio and video codes, enabling a person to have the ultimate high-definition video viewing experience.
Unlike the traditional DVD, a Blu ray disk has storage capacity around five times higher than a traditional DVD. These disks can store high-definition video as well as standard-definition video. The standard can store around 9 hours whereas the high-definition video can store up to 23 hours. Another advantage of the Blu ray disk is that the blue-violet laser in it has a shorter wavelength, focus is made on a disc area with greater precision. Although the looks of a CD and a Blu ray disk may seem the same, the storage capacities differ a lot.
Blu ray disks have taken the entertainment industry by force. But unfortunately there are still DVD players that can’t read the Blu ray disk when it is played. But this is being rectified by the use of backward compatible players. Such players have the ability of reading Blu ray disks, CD’s as well as DVD’s.
