I've been seeing alot of this advertising lately about a Blue Ray Disc and would like to know more about it. Maybe I'm living in a cave or something, but it seems like the technology for Electronics is faster than this old gal can keep up with it!
2007-03-18 16:12:55 · 4 answers · asked by Anonymous in Consumer Electronics ➔ Other - Electronics
A Blu-ray Disc (also called BD) is a high-density optical disc format for the storage of digital media, including high-definition video.
The name Blu-ray Disc is derived from the blue-violet laser used to read and write this type of disc. Because of this shorter wavelength (405 nm), substantially more data can be stored on a Blu-ray Disc than on the DVD format, which uses a red, 650 nm laser. Blu-ray Disc can store 25 GB on each layer, as opposed to a DVD's 4.7 GB. Several manufacturers have released single layer and dual layer (50 GB) recordable BDs and rewritable discs.[1] All supporting studios have either already released or have announced release of movies on 50GB discs.
Blu-ray Disc is similar to PDD, another optical disc format developed by Sony (which has been available since 2004) but offering higher data transfer speeds. PDD was not intended for home video use and was aimed at business data archiving and backup.
Blu-ray Disc is currently in a format war with rival format HD DVD.
Technical Specifications
* About 9 hours of high-definition (HD) video can be stored on a 50 GB disc.
* About 23 hours of standard-definition (SD) video can be stored on a 50 GB disc.
* On average, a single-layer disc can hold a High Definition feature of 135 minutes using MPEG-2, with additional room for 2 hours of bonus material in standard definition quality. A dual layer disc will extend this number up to 3 hours in HD quality and 9 hours of SD bonus material
DVD (commonly known as "Digital Versatile Disc" or "Digital Video Disc") is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. DVDs resemble Compact Discs as their diameter is the same (120 mm (4.72 inches) or occasionally 80 mm (3.15 inches) in diameter), but they are encoded in a different format and at a much higher density.
All read-only DVD discs, regardless of type, are DVD-ROM discs. This includes replicated (factory pressed), recorded (burned), video, audio, and data DVDs. A DVD with properly formatted and structured video content is a DVD-Video. DVDs with properly formatted and structured audio are DVD-Audio discs. Everything else (including other types of DVD discs with video) is referred to as a DVD-Data disc. Many people use the term "DVD-ROM" to refer to pressed data discs only, but that is not technically correct.
Blue rays are expensive...you need a blue ray player to play blue rays discs..
2007-03-18 16:24:47 · answer #1 · answered by sweetie_woman_1 3 · 1⤊ 0⤋
Blue Ray is better than DVD because it's a "high definition" technology. Along with HD DVD, they're the next generation of video. Before, there was VHS, then DVD; Blue Ray is trying to be the next upgrade. A Blue Ray disc carries more information than a DVD, which allows Blue Ray players to display higher resolutions, brighter colors, etc. In short, Blue Ray is a brighter, sharper improvement of DVD.
One disadvantage of Blue Ray is that it's very, very expensive, more so than DVD players when they first came around. The problem is, you'll not really get the most out of your Blue Ray player if you don't have a High Definition TV. So upgrading from DVD to Blue Ray means upgrading your TV to HDTV. Along the same lines, you're really not getting the most out of your High Definition television if you have a dinky DVD player attached to it.
Eventually, everyone will switch off DVDs into Blue Ray or HD_DVD (another type of DVD replacement, but I'm not gonna tackle it because your question was specific to Blue Ray), but most people wait until their existing DVD players breakdown before they make the switch.
2007-03-18 16:34:27 · answer #2 · answered by miokti 3 · 1⤊ 0⤋
Yes, you are living in a cave.
It's 4 times the picture resolution of regular DVDs. You need a High-definition television to fully experience this improvement. The disc holds 5 times as much space as a DVD, and it has more advanced audio formats than that of regular DVD.
There is also HD-DVD, which is a competing format to Blu-ray. Some movies are on HD-DVD, some are on Blu-Ray, some are on both.
2007-03-18 16:22:07 · answer #3 · answered by lifterus 2 · 1⤊ 0⤋
Can you use both DVD and Blue Ray on a DVD player. Too may changes, too fast. Can t they slow it up a little.
2016-01-21 10:19:15 · answer #4 · answered by Cleo 1 · 0⤊ 0⤋