The fast evolution of technology made humans experience the latest advancements in the entertainment industry. 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 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.
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 named ‘Blu ray’ by everyone.
The Blu ray disk is famously known as a BD or a blue-ray disc. This has been 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. A Blu ray disk is used for 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. A Blue ray disk 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. A Blu ray disk can store around 9 hours of high-definition video and 23 hours of standard-definition video on a 50GB disk. Since the blue-violet laser in the Blu ray disk has a shorter wavelength, focus is made on a disc area with greater precision. The size of the disk is the same as a CD, but the storage capacity is much higher.
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 many consumer electronic manufacturers making sure they release backward compatible players. Many of the CD’s and DVD’s can be used in a player which is compatible with Blu ray disks and DVD’s.