A Blu-ray disk (BD) is a high-capacity optical disk medium developed for recording, rewriting and playing back high definition video. It can store large amounts of data and was designed to supersede the DVD.
Blu-ray was jointly developed by a group of personal computer and consumer electronics companies called the Blu-ray Disc Association. Blu-ray disks support higher resolutions and more advanced video and audio formats compared to DVDs.
Blu-ray technology gets its name from the blue-violet laser that is used to read Blu-ray disks. Compared to a DVD’s red laser, a blue laser permits more information to be stored at a greater density. For example, while a DVD can store 15 GB per layer, a Blu-ray disk can store 25 GB per layer, and dual-layer disks can hold up to 50 GB.
Compared to a DVD, Blu-ray also provides much higher resolution; while a DVD with standard definition can provide definition of 720x480 pixels, Blu-ray high definition has 1920X1080 pixel resolution.
Synonyms
Blu-ray Disc
Share this Term
Tech moves fast! Stay ahead of the curve with Techopedia!
Join nearly 200,000 subscribers who receive actionable tech insights from Techopedia.
Latest Articles
By: Dr. Tehseen Zia | Assistant Professor at Comsats University Islamabad
By: Devin Partida | Editor-in-Chief for ReHack.com
By: Ariella Brown | Contributor
