Blu Ray Disks: New Technologies

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. Latest blockbuster movies could be watched at the comfort of their homes. These high-tech equipments had unmatched picture quality with high audio and video resolution. So getting Blu ray disk will be really important.

A Blu ray disk has the same physical attributes as a standard DVD. 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. The Blu ray disk uses a blue-violet laser instead of the red laser which is used in the traditional type of DVD’s and thus it is named ‘Blu ray’ by everyone.

The Blu ray disk was developed by the Blu ray disk association; a group is 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.

When talking about advantages, one of the major advantages that a Blu ray disk has over a standard DVD 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. A Blue ray disk has advanced audio and video codes; therefore a person can have the ultimate high-definition video viewing experience.

A Blu ray disk, also known as a BD has storage capacity around five times higher than the normal one. A Blu ray disk can store around 9 hours of high-definition video and 23 hours of standard-definition video on a 50GB disk. 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.

The major disadvantage is that sometimes standard DVD players are unable to recognize the format in these disks. But this is being rectified by the use of backward compatible players. Many of the CDs and DVDs can be used in a player which is compatible with Blu ray disks and DVDs.

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