It's time for 3-D

 

Watch out........3-D is coming with bare eyes.You can enjoy the game in 3-D without wearing clunky, chunky 3-D eyeglasses.And this is done by Nintendo and Toshiba.New glasses-free 3-D devices are about to hit the market, and their backers are hoping they'll make 3-D spectacles as obsolete as Smell-O-Vision. These gadgets, described as "autostereo" to distinguish them from the kind requiring eyewear, will include not only game consoles but also cameras, cellphones, and tablet computers. Among the first will be autostereo 3-D TVs, just now hitting stores in Japan, and Nintendo's 3-Ds game consoles, due for release worldwide early next year.
Nintendo last dabbled in 3-D 20 years ago, with Famicon Grand Prix II: 3D Hot Rally, a disc-based racing game using active-shutter glasses. Even in gadget-mad Japan, the heavy, flickery, first-generation goggles proved unpopular. "Since then, we've tried 3-D many times without announcing it, searching for a way to make it a product for the mass market," says Satoru Iwata, president and CEO of Nintendo. "With the 3DS, 3-D effects finally give a much better sense of height, depth, and width. You get a much better ability to navigate and judge distance."
The Nintendo 3DS's autostereo screen,made by SHARP,uses a multiplexed "parallax barrier" technology. This method lays a second layer of liquid crystals next to a traditional LCD and its backlight. This extra layer creates thin vertical strips that block some of the light and direct the remaining light alternately to the left and right eyes, creating a 3-D effect for a single viewer at a set distance, usually around 30 centimeters. 
Parallax barrier technology does have a few problems. Because the multiple layers of crystals prevent some light from reaching the user, getting to an acceptable level of brightness means cranking up the backlight, sucking up power and quickly draining batteries in portable devices. And because each eye sees only half a screen's total pixels, the technique cuts the effective resolution in half. So manufacturers must choose between a display of standard resolution and brightness—and suffer dull, low-resolution 3-D graphics—or upgrade to a brighter, higher resolution screen that's also pricey and power hungry.
Nintendo recognized these issues,engineers are trying to fix these problems.

                                                                

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