3D TV is the big push with makers now it seems
RichA
the better. Horrible display technology.
Get ready for laser-powered 3-D TV
Christine Connolly, chri...@stalactite.org.uk
IRVINE, Calif. – Last October, Mitsubishi Digital Electronics America
Inc. announced that it was bringing to market laser-powered
television. Called LaserVue, it lights up the screen with high-color-
purity red, green and blue laser light instead of white lightbulbs and
produces bright colors with a much wider color range. This approach is
also said to be much more efficient than standard LCD and plasma
screens because the lasers produce narrow-wavelength light of each
primary color instead of filtering out the required wavelengths from
full-spectrum white.
The Mitsubishi L65-A90 Laser TV has a slim profile and produces
bright colors while using only a fraction of the power of an LCD or
plasma screen.
It uses Class 1 safety-rated lasers in a digital light projection
display. Precisely focused laser beams yield 1920 × 1080-pixel
resolution and 36-bit color depth. The 135-W operating power claims to
be just one-third that of an LCD, and one-quarter that of a plasma TV.
The laser TV, in common with Mitsubishi’s Home Theater HDTV product
line, is 3-D-ready. For several years now, the company has been
developing 3-D technology and working with program content providers
in anticipation of high consumer demand. A 3-D display requires
simultaneous input from cameras placed at different angles, and it is
only recently that the necessary bandwidth has emerged for
transmission and processing.
By displaying stereo-pair images at a multitude of viewing angles,
Mitsubishi’s autostereoscopic approach means that viewers see the 3-D
effect with the naked eye, no matter where they sit relative to the
screen. View-dependent pixels display different colors at different
viewing angles. Mitsubishi’s research laboratory is working on a data
format that allows processing within the display to create the
multiple view signals for controlling the pixels. The system even can
produce a motion parallax effect, where the view changes appropriately
as the observer moves around.
One way to produce view-dependent “pixels” is to place an opaque
screen with vertical slits some way in front of a standard high-
resolution display. Observers at different horizontal locations see
different display pixels through the slits, and the two eyes of a
single observer see different subsets of display pixels. Other methods
involve lenticular sheets and holographic screens. Complex signal
processing is needed to paint the correct image on each display area
to present left and right eyes with the appropriate stereo effect.
Audie Murphy's Ghost
<f2bf4b0e-f1de-4596...@d4g2000yqa.googlegroups.com>,
RichA <rande...@gmail.com> wrote:
> One way to produce view-dependent �pixels� is to place an opaque
> screen with vertical slits some way in front of a standard high-
> resolution display. Observers at different horizontal locations see
> different display pixels through the slits, and the two eyes of a
> single observer see different subsets of display pixels. Other methods
> involve lenticular sheets and holographic screens. Complex signal
> processing is needed to paint the correct image on each display area
> to present left and right eyes with the appropriate stereo effect.
Sounds simple enough. What could go wrong?
writerpatrick.webs.com
"Audie Murphy's Ghost" <takebac...@2008.com> wrote in message
news:090720090506341263%takebac...@2008.com...
Basically it sounds like they're layering two or more screens together. The
trick is working out a way so that people sitting in different locations,
and at different heights, can all see the screen equally well.
Wire enough of these screens together to fill the walls and ceiling of a
room and you've got yourself a holodeck (without the tactile aspect).
--
Patrick McNamara
E-mail: patjmc...@gmail.com
Central Hub (Access to podcasts, blog and web stores):
http://writerpatrick.webs.com
My Toy Store: http://patrickjmcnamara.webs.com
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Rich
news:h352cq$j4d$1...@news.eternal-september.org:
>
>
> "Audie Murphy's Ghost" <takebac...@2008.com> wrote in message
> news:090720090506341263%takebac...@2008.com...
>> In article
>> <f2bf4b0e-f1de-4596...@d4g2000yqa.googlegroups.com>,
>> RichA <rande...@gmail.com> wrote:
>>
>>> One way to produce view-dependent "pixels" is to place an opaque
>>> screen with vertical slits some way in front of a standard high-
>>> resolution display. Observers at different horizontal locations see
>>> different display pixels through the slits, and the two eyes of a
>>> single observer see different subsets of display pixels. Other
>>> methods involve lenticular sheets and holographic screens. Complex
>>> signal processing is needed to paint the correct image on each
>>> display area to present left and right eyes with the appropriate
>>> stereo effect.
>>
>>
>> Sounds simple enough. What could go wrong?
>
> Basically it sounds like they're layering two or more screens
> together. The trick is working out a way so that people sitting in
> different locations, and at different heights, can all see the screen
> equally well.
>
> Wire enough of these screens together to fill the walls and ceiling of
> a room and you've got yourself a holodeck (without the tactile
> aspect).
>
Basically, at the theatre, you end up with a much darker image (even with
prescribed high reflectance screens) and lower resolution.