Blu-ray, time to upgrade?
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 amounts 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.
While current optical disc technologies such as DVD, DVD±R, DVD±RW, and DVD-RAM rely on a red laser to read and write data, the new format uses a blue-violet laser instead, hence the name Blu-ray. Despite the different type of lasers used, Blu-ray products are backwards compatible with CDs and DVDs. The benefit of using a blue-violet laser is that it has a shorter wavelength than a red laser, which makes it possible to focus the laser spot with even greater precision. This allows data to be packed more tightly and stored in less space, so it's possible to fit more data on the disc even though it's the same size as a CD/DVD. This together with the change of numerical aperture to 0.85 is what enables Blu-ray Discs to hold 25GB/50GB. Recent development by Pioneer has pushed the storage capacity to 500GB on a single disc by using 20 layers.
New Egg has a Blu-ray recorder made by Pioneer who is a leader is the field for less than $210. It is one of the cheapest on the market but, is a very high quality unit as reviewed by cdFreaks.com. Still like Blue Ray but, do not want a recorder? Pioneer makes another nice player only too for less than $110.
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Home theater for the DIY, get some great tips and links which will offer some insite into this somewhat confusing arena.
