# 3d television

1. Jan 5, 2010

### Greg Bernhardt

I was reading this story on CNN about how ESPN is starting to develop and implement 3D programming.
http://www.cnn.com/2010/TECH/01/05/espn.3d/index.html

It seems like an obvious step with the 3D movies out. However, besides the fact you'll need to buy a new TV, you will also need those 3D glasses. Do industry leaders really think people will want to put on glasses every time they watch TV? What do you think? Is 3D the next big thing, or just a quarter step that will be frog leaped in 5-10 years?

2. Jan 5, 2010

### Newai

Will the government send me coupons for two free pair of 3D glasses?

3. Jan 5, 2010

### DavidSnider

They have 3D monitors that don't require glasses. But you do have to be sitting in a 'sweet spot' for it to work.

The ones that do require glasses don't require anything special about your monitor I don't think.

4. Jan 5, 2010

### waht

Japan has been airing 3D transmission since 2008.

3D TVs are capable to switch back and forth between 2D and 3D if needed, so it's pretty reasonable that they will take off.

5. Jan 6, 2010

### BlackVenom

This morning HLN said that the NFL will be airing 3D games very soon. They said when but I don't remember. Sony is working on a 3d system for the PS3 that does not need a 3d screen or glasses but works on motion/tilt sensor.

6. Jan 6, 2010

### sas3

3D technology has been around for years.
I have had 3D set up on my PC since about 2006.
The new 3D uses 120 Hz, the one I have set up uses 60 Hz so I guess I will need to upgrade soon.
I think same technology is used for the new TVs
You will need to buy the glasses but any TV with 120Hz will work

Here is a link to the http://www.nvidia.com/object/3D_Vision_Main.html" [Broken] site.

Last edited by a moderator: May 4, 2017
7. Jan 8, 2010

### hamster143

It's a half step. There are some serious limitations (there's only one point of view and your sense of 3D fades if you tilt your head). The future is with wearable VR displays. Back-end graphics hardware is getting fast enough to handle the load, all we need is cheap high resolution matchbox-sized LCD screens.

8. Jan 8, 2010

### Phrak

I don't understand. How does this work? I know that each eye needs to receive a different signal, but how is color 3D obtained?

9. Jan 8, 2010

### hamster143

The answer is circular polarization. Left and right glasses in 'Avatar'-like 3D glasses are designed to pass clockwise and counterclockwise polarized light (or possibly vice versa). The screen displays two pictures at the same time, one clockwise polarized, the other counterclockwise polarized, slightly offset with regard to each other, just enough that the viewer will get the sense of depth. Relatively easy to implement in hardware (especially in plasma screens): you simply send the picture in 120 fps instead of 60 fps, double the number of pixels, add some polaroids on top of each pixel, and add some simple logic that sends all odd frames to one set of pixels and all even frames to the other.

Last edited: Jan 8, 2010
10. Jan 8, 2010

### Phrak

Ohh... This mean that the screen has to double-up on RGB cells. Each one has to has a polarizing filter in front of it. Is this really done?

11. Jan 8, 2010