DawgTalkers.net Forums DawgTalk Tailgate Forum 3D TVs at Best Buy

http://www.lcdtvreviews.org.uk/lcd-tv-ne...nality-samsung/

Samsung Electronics has released safety information concerning the use of 3D TVs in households. In the document titled ‘Important safety information. Read the following warnings before you or your child use the 3D function’, Samsung has advised that kids and teenagers are more vulnerable to health issues that could arise due to 3D viewing and hence must be carefully monitored.

Samsung warns that some viewers might be affected by stroke or epileptic seizure on exposure to “certain flashing images or lights contained in certain television pictures or video games.” Therefore, it is advised that those with a family history of such disorders should consult a doctor before making use of the 3D function. According to Samsung, even viewers without such conditions are prone to photosensitive epileptic seizures that occur due to 3D TV viewing.

Also, pregnant women, elders, people suffering from sleep deprivation, alcoholics and those with ’serious medical conditions’ are not to use the 3D functionality, says Samsung. The electronics giant also warns that 3D TV viewing could cause motion sickness, headaches, eye strain, disorientation, decreased postural stability and perceptual after effects.

Yup. This is because the TV's do not use the same technology as the theaters use.


The theaters use the Dual-Projector Polarization method, whereas these new TV's are using Alternate Frame Sequencing.


to borrow from TomsHardware.com:

Alternate Frame Sequencing
A standard TV can provide 60 frames of video per second (60 Hz), but a 3D-ready TV can provide twice that, or 120 frames per second (120 Hz). The alternate-frame sequencing system works by alternately displaying a frame of video for each eye--first a frame of video for the left eye is shown, followed by a frame for the right eye, a frame of video for the left eye again, and so on. This changes back and forth, 120 times each second.

If you were to watch TV while it delivered 3D content this way, all you'd see would be a blur of what would appear to be two perspectives overlapped on top of each other. The key to making this system work is LCD shutter glasses. These glasses alternatively block each eye, 120 times each second (60 times a second for each eye), in order to allow only the intended frame of video to be seen by the targeted eye.

With a total 120 Hz, each eye sees every second frame and thus receives 60 frames of video per second--the same rate that we're used to seeing on conventional televisions. At this speed, you shouldn't be able to perceive any strobing or flickering, but you'd probably notice that the video seems darker than you'd expect. This makes sense since, each eye is only receiving light half of the time.

p.s. TomsHardware has a good article up on how to build your own Dual Projector Polarization setup for an HD Do-It-Yourself, Wall-Sized 3D in your home.
The article is aimed at gamers, but it'll work for displaying anything - even the new 3D stuff that is coming out.

This means that you can use the dirt cheap theater glasses to watch 3D in your home

Don't they have that warning with all new video technology? I know the ps2 came with that warning. Although from what i heard these side affects may be moré widespread. We shall see. Finally saw a comercial for the samsung tv the other day.

Call me a stick in the mud ... but this 3D technology seems to be a bit of a fad, based on one really popular movie.

I mean, is there really anything ground-breaking here? Haven't 3D movies been out since the 60s? What am I missing here? You're still required to wear glasses ... and in some cases, need to pay several hundred dollars for the glasses. It doesn't seem there has been any major advancements, other than maybe the movies being more realistic about the 3D ... rather than constantly throwing objects at you.

But what am I missing here? This stuff has been around for years. Did American A.D.D finally catch up to the 3D technology?

If ya have seen that "one really popular movie", you'd know that this isn't our Dad's 3D. It's well beyond it in terms of realism, color, quality, etc... there are no red & blue anaglyph lines.

Quote:

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I mean, is there really anything ground-breaking here?

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Just go watch one movie in it, you'll see... It isn't something cheesy like 3 seconds of an axe flying at the camera in Friday the 13th Part 3 followed by 20 minutes of 2D and then another brief moment of depth.

Yes, wearing glasses is annoying, but the Polarized glasses they have today aren't bad at all... they're comfortable and are really just like wearing sunglasses indoors.

But that's what I'm saying though ... is it really the technology that's improved, or just the cinematography?