Single Layer Light
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The Blue Ray DVDs
This future optical disc format – BRD (Blue Ray DVDs is a remarkable invention of the BDA (Blu Ray Disc Association) that consists of TDK, Thomson, Sharp, Pioneer, Philips, Mitsubishi, Sony, JVC, Panasonic, Samsung, Apple, Hitachi, LG, Dell and HP. The BDA boasts 180 of the world's leading consumer electronics, media and personal computer manufacturers.
The days of DVDs are numbered. The necessity for storing HD content is increasing daily in the light of increasing number of people turning to HD television (which already use the fiber optic technology such as fiber optic connectors) for their latest digital television fare. But, DVDs support a resolution up to 720x480 pixels while high definition content resolutions are as high as 1920x1080 pixels. HD video content uses up a considerable amount of hard drive space too. High definition content with data compression of about 2 hours duration requires up to twenty-two GB of storage space whereas a DVD-18 disc (dual-sided double-layer) allows a storing capability of seventeen GB only.
The answer to this issue has helped invent two brand-new technologies, namely High Definition DVD and Blue Ray DVDs, which are now locked in an intense battle to clinch market shares and become the successor to DVD. Both these technologies are very similar in nature but the blue ray DVDs have an advantage since these boast a far higher storage capacity than the HD DVD. The blue ray discs, as the name suggests, uses a blue-violet laser to read and write data unlike the current technology which uses red laser.
A blue-violet laser (405nm) carries a much lesser wavelength than a red laser. The plus point in this is that as the data could be packed compactly it uses less space to store data and that fact lets users to add more data on the disc though the size of the disc is more or less the same as a CD/DVD.
A single-layer HD-DVD disc only store 15 GB whereas single-layer blue ray DVDs can store 25 GB which is more than 2 hours of high-definition video and 13hours hours of standard video. A double-layer High Definition-DVD can store up to thirty GB whilst double-layer blue ray DVDs can hold fifty-four GB which is 4.5 hours of HD video and more than 20 hours of normal video.
Blue ray DVDs are also light on the manufacturers since these are built by injection-molding process on a single 1.1-mm disc compared to the traditional injection-molding process on a 0.6 mm (HD DVD follow the same method) which thereby reduces costs. The money so saved is spent on the addition of a protective layer necessary on blue ray DVDs and this causes the end price to be more or less same with the current price of a DVD.
Flex Lighting's LED film will brighten your e-reader, mood (video) (Engadget)
The slogan pretty much says it all: Flex Lighting has developed a new front
light LED film that could drastically change the way you interact with your
e-reader. According to the Chicago-based company, this film is part of a new
lighting system that promises to bring smooth, nighttime reading to E Ink
displays everywhere. Flex Lighting's setup is rather simple, consisting of
nothing more than a single LED and a thin layer of film, laminated onto a
device's reflective screen. At a thickness of just 50 micron, the film
essentially acts as a light guide, spreading the LED's beams across a reader's
display and creating a "soft glow" that many predecessors have thus far failed
to replicate. The folks over at the_ eBook Reader_ managed to get their hands
on a brief demo video, in which the system performs rather impressively. See
it in action for yourself, after the break.
Continue reading _Flex Lighting's LED film will brighten your e-reader, mood
(video)_
Flex Lighting's LED film will brighten your e-reader, mood (video) originally
appeared on Engadget on Wed, 14 Dec 2011 12:21:00 EDT. Please see our terms
for use of feeds.
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