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Tiny springs keep Wii, PS3 under control

With a tilt of your wrists, the dragon you're riding dives toward the water below. With another movement of your hands, as if pulling back on imaginary reins, the scaly beast pulls out of the dive into level flight, flapping its wings.

That's how the unreleased game "Lair" will work on the Sony PlayStation 3, which launched in the U.S. on Friday. Like Nintendo Co.'s Wii console, which went on sale two days later, it uses a motion-sensitive controller in an effort to make games more intuitive to play.

The controllers make a higher level of realism possible, too: in the sports game bundled with the Wii in the U.S., the stick-shaped controller doubles as the handle of a virtual tennis racket or golf club.

The technology behind motion-sensing has been around for a while, but recent technical advances have radically brought down the price -- and the size. The new game controllers are the first gadgets that promise to bring the technology into the hands of millions of people, and manufacturers are now using motion sensors in other consumer products, including cell phones.

The technology is a wonder of miniaturization and precision. Here's how Benedetto Vigna, head of the unit at Switzerland-based STMicroelectronics NV, which makes a motion-sensing chip for Nintendo, explains how it works:

When you wave around the new Nintendo controller, two tiny, flat pieces of silicon inside it, each weighing about a millionth of a gram, flex against silicon springs that hold them in place.

The movements are minute, or to put it another way, they're on the scale of 10 to 100 hydrogen atoms stacked side by side.

But these tiny movements can be measured with incredible accuracy. A charge is applied between the moving pieces of silicon and two nearby sensors. Faint fluctuations in that charge, as small as that of 10 electrons, are picked up by a chip that translates it into an understanding of how the controller is moving.

The two moving weights, which fit together on an area less than a millimeter square, have different roles. One has two sets of springs, which allow it to move from side to side and back and forth. The other weight is a flat piece anchored almost like trampoline. It senses vertical movement. This way, the chip can distinguish motion in all three dimensions of space.

Analog Devices Inc. of Norwood, Massachusetts makes a similar chip, which goes into the main Wii controller, the stick-like Wii Remote. According to Analog Devices, ST's chip is used in the auxiliary Freestyle controller (popularly known as the "Nunchuck") that connects to the larger controller for some games. ST said it was not allowed to say where exactly its chip is used...

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Capt CHAOS4018d ago (Edited 4018d ago )

It all makes sense now.. So they could known something out for a quid.. perhaps a Xbox 360 game and motion clipon for the controller in the price?

Arkham4018d ago

I'm sure they could release something affordable, but as with all add-ons it comes down to developer support and consumer adoption rates. At this point in time I suspect the market would be too narrow.

THELANDOFSANDS4018d ago (Edited 4018d ago )

tiny springs?!?

i suppose little minature kuturagi's live inside that jump up to turn it on and off when you touch the buttons. and baby pixies run around on a wheel to play a blu-ray disc.

it all makes sense now!

Tut4018d ago (Edited 4018d ago )

How did you manage to get your bubbles back?

Are the mods serious?

Hahaha! Nevermind. You added an "S" to the end of your name. Doesn't that mean you violated the two-username rule?

You clever little trickster you! =)

THELANDOFSANDS4018d ago (Edited 4018d ago )

i'll take that as a compliment

;)

does you name refer to king tut? i always wonder...

power of Green 4018d ago

If i were to keep one of my PS3's i would hope you would be able to turn off that half assed motion tilt BULLSHIT.

Shadow4018d ago

Tilt/motion is actually pretty fun. You'd know that if you actually played videogames, LOL.