Blogs
Originally featured on BroadcastEngineering.com
Jan 19

Written by:
1/19/2011 3:20 PM  RssIcon

After a disappointing holiday season for 3-D TV sales, manufacturers were back at the recent CES in Las Vegas trying again. A big focus this year was getting rid of the 3-D glasses, one of the most unpopular aspects of current 3-D home systems. Another trend was a switch to less expensive passive 3-D glasses, enabling consumers to afford more than two sets of glasses to entertain their friends (another major hurdle to widespread adoption).

Called autostereoscopic TVs, glasses-free 3-D sets have become something of a holy grail for the industry, but the transition is not easy. A 3-D image depends on human eyes seeing two slightly different images. The easiest way to do this is to wear a set of glasses that can use the lenses to change or filter the image slightly.

Right now, active-shutter glasses do this by dimming each lens in rapid succession, while polarized 3-D filters use the glasses to show each eye a different image by filtering the light that each eye can see. To achieve this without glasses requires a special TV panel display. Most such displays today are too expensive and restrictive, reducing a weak 3-D effect to a fixed distance and angle for no more than two viewers.

At CES, several of the major TV manufacturers had prototype glasses-free 3-D TVs. LG had some portable displays; Sony had 47in and 55in models and a portable Blu-ray player; and Toshiba showed a 65in HDTV as well as a few portable Blu-ray players and a laptop. Still, no manufacturer announced a commercially available product.

A promising glasses-free demo came from iPont, a small Hungarian company. Its setup consisted of a 65in autostereoscopic 3-D display by Tridelity hooked to an iPont box. For the tests, iPont used clips from YouTube 3-D, designed for use with 3-D sets with glasses.

While the viewing angles were as limited as those of the major manufacturers, the depth of the images was much deeper and more compelling. Better yet, iPont’s 3-D box, the company said, was built with off-the-shelf parts.

Another CES trend in 3-D was passive-shutter glasses. LG showed its FPR (Film Pattern Retarder), a thin film placed over the LCD display that allows 3-D viewing with cheap, passive, polarized 3-D glasses instead of expensive and heavier active-shutter glasses.

Due for U.S. sale in April, LG sought to squash rumors that FPR is not full-resolution 3-D. Each eye only receives 540 lines, instead of the usual 1080, but LG said it’s been certified full-HD because both eyes get a total of 1080 lines.

Tags:
Categories:
Location: Blogs Parent Separator BE Blogs

Your name:
Gravatar Preview
Your email:
(Optional) Email used only to show Gravatar.
Your website:
Title:
Comment:
Add Comment   Cancel 




Thursday 10:05 AM
NAB Requests Expedited Review of Spectrum Auction Lawsuit
“Broadcasters assigned to new channels following the auction could be forced to accept reductions in their coverage area and population served, with no practical remedy.” ~NAB

Sue Sillitoe, White Noise PR /   Thursday 09:10 AM
Fairlight Unveils the Next Generation of Audio Post Production
Wall Street Communications /   Thursday 01:00 PM
NUGEN Audio AES Product Preview

 
Featured Articles
Discover TV Technology