How Blu-ray discs work
From CDs to DVDs to Blu-ray, the media storage technology has moved to
higher capacities and higher resolutions. A Blu-ray disc and player
together provide content at full HD 1080p resolution. This is how they
work.
A Blu-ray disc is an optical disc format that is rapidly replacing DVD across the world.
Blu-ray storage technology was introduced in 2006 and the name refers to the blue-violet laser that is used to read/write information on the disc.
It was developed to enable recording, rewriting and playback of high-definition (1080P or Full HD) video as well as storing a greater amount of data and faster reading speeds.
The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25 GB on a single-layer disc and 50 GB on a dual-layer one.
Translation: You can fit over nine hours of hi-def video or about 23 hours of standard-def video on a 50GB Blu-ray disc.
Fact File
Blu-ray storage technology was introduced in 2006 and the name refers to the blue-violet laser that is used to read/write information on the disc.
It was developed to enable recording, rewriting and playback of high-definition (1080P or Full HD) video as well as storing a greater amount of data and faster reading speeds.
The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25 GB on a single-layer disc and 50 GB on a dual-layer one.
Translation: You can fit over nine hours of hi-def video or about 23 hours of standard-def video on a 50GB Blu-ray disc.
Fact File
- Blu-ray disc doesn't work in normal DVD players.
- Blu-ray has a higher data transfer rate: 36 Mbps.
- A Blu-ray disc can record 25 GB of material in just
- over an hour and a half.
- Blu-ray discs are better protected than DVDs.
- You can record high-definition television (HDTV)
- programmes without loss in quality.
- You can record one programme while watching another on the disc.
- You can also create playlists; edit or reorder programs recorded on the disc; automatically search for an empty space on the disc to avoid recording over a program; access the Web to download subtitles and other extra features.
