Blu-ray, also known as Blu-ray Disc (BD) is the name of a next-generation optical disc format. The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large quantities of data. The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. The name Blu-ray is derived from the underlying technology, which utilises a blue-violet laser to read and write data. In part because of the shorter wavelength (405 nanometres), substantially more data can be stored on a Blu-ray Disc than on a conventional DVD. The name is a combination of “Blue” (blue-violet laser) and “Ray” (optical ray). According to the Blu-ray Disc Association the spelling of “Blu-ray” was intentionally spelled that way in order for the term to be registered as a trademark.
Blu-ray was introduced to the Bang & Olufsen range of televisions with the BeoVision 7-40. In this 40″ LCD TV the standard DVD optical drive was replaced with an optional built-in Blu-ray drive. The player included the so-called BD Live feature (profile 2.0) which gave the user a range of extra interactive possibilities via the Internet (such as movie trilers, information about the director and actors etc).
The name Blu-ray Disc is derived from the blue laser (violet-coloured) used to read and write to this type of disc.
Sound wise the Blu-ray player in BeoVision 7-40 supports the following formats:
- Dolby Digital 5.1
- Dolby Digital + 7.1
- Dolby Digital True HD 7.1
- DTS 5.1
- LPCM 7.1
Blu-ray discs with DTS HD 7.1 or DTS HD Master 7.1 were decoded as DTS 5.1.
The BeoVision 7-55 3D includes an incorporated Blu-ray reader as standard.