Sony Quattron four colour TV

[Bert]

How does this work? They have put in a yellow phosphor, I believe, but since the TV picture signals only contain information on how bright the red, green and blue phosphors should be, what signal will go to the yellow phosphor?

While on the subject of TV, how is 3D TV going to work?

[rojash]

The Quattron is made by Sharp.
From their web site:
"Quattron TVs feature a bespoke RGB to RGBY conversion circuitry that uses a unique set of algorithms to render the colour via the quad-pixel panel.

For example, to display the colour yellow on a standard RGB TV receiving an RGB signal the TV will mix Red and Green elements, using hexadecimal values as <Red:255, Green:255, Blue:0>, but with a Quattron TV it will render the same yellow colour as <Red:0, Green:0, Blue:0, Yellow:255>. "

[GuyMitchell]

There are a number of methods that make 3d tv work. The conventional method is to use glasses that allow one image to be seen in one eye and another in the other. This could be done by a number of different methods; 1) the old way with red/green colour , 2) polarized light (like they did in avatar - look up light polarization) 3)The electronic shutter system. This works by basically fooling your brain into seeing the two pictures as one. This can be replicated (alas very badly) by quickly closing and opening your eyes alternately left to right (you don't have to do it now). (sony bravia, samsung and the panasonic system will work like this).

There is one newer method which I believe Philips have developed and works without glasses. The way i understand it, it works much like those holographic cards you used to get out of cereal packets at around Halloween time whereby you have a number of prisms that create a 3d image - but i may have got this wrong

[bibblebub]

And the Japanese are already working on holographic tv that works like the Princess Leia message that R2D2 shows in Star Wars so that you can sit anywhere around it. They want that ready well before 2022 which is when they hope to hold the World Cup.

[Bert]

Thanks to all of you. Sorry I got the name of the manufacturer wrong - I'm always doing that sort of thing - getting the initial letter right, but mixing up the rest.
Do you think the yellow phosphor will give a better picture than the present system used by most manufacturers? if not, what's the point of it?
Those cereal packet prism things were rubbish. I wouldn't give 3D TV based on that much hope. The prisms would have to be fitted to the screen, wouldn't they? What you see would depend on your angle of view (?). You'd have to find the right place to view from, then not move your head by a millimetre (?). Watching non-3D TV would be awful, as you'd see all the prisms distorting the picture.
Wouldn't the red-green system only work with black-and-white pictures?