Blue-Ray Disk

The fast evolution of technology made humans experience the latest advancements in the entertainment industry. One of the biggest evolutions was the arrival of DVDs. It had a huge impact on the total entertainment experience. Latest blockbuster movies could be watched at the comfort of their homes mainly because with DVDs 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. Unlike the DVD, the Blu ray disk 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 DVDs and thus named Blu ray by everyone.

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. The most popular names include 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. A single-layer Blu ray disk has a storage capacity of 25GB and the dual-layer Blu ray disk can store 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 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. Since the blue-violet laser in the Blu ray disk has a shorter wavelength, hence enabling it to focus 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.

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.

Filed Under: Blu-Ray Technology