This explains the technology which is outstanding.
http://www.invensense.com/news/071508.html[quote="Invensense"]
INVENSENSEâ„¢ IDG-600 MOTION SENSING SOLUTION SHOWCASED IN NINTENDO'S NEW Wii MotionPlus ACCESSORY
World's Leading Multi-axis MEMS Rate Gyroscope Enhances Performance of Latest "Wii MotionPlus" Accessory
SUNNYVALE, Calif., July 15, 2008 – InvenSense Inc., a leading provider of MEMS-based motion sensing solutions for image stabilization, dead reckoning navigation, 3D remote control, and gaming devices, today announced that its IDG-600 multi-axis MEMS rate gyroscope has started shipping in mass production quantities to Nintendo for its Wii MotionPlus accessory. Gesture based interfaces are quickly becoming the standard for many feature-rich consumer electronic products. Utilizing InvenSense’s unique motion sensing capabilities, customers of the new generation of Wii MotionPlus controllers will enjoy an immersive gaming experience with motion control never before possible in a video game. The Wii MotionPlus accessory attaches to the end of the Wii Remote and, combined with the accelerometer and the sensor bar, allows for more comprehensive tracking of a player's arm position and orientation. In the new Wii Sports Resort product from Nintendo, for example, the ability to throw a disc through the air and control the angle of flight is now possible.
Conventional MEMS gyroscopes, which are the key enabling technology that can sense absolute rotational motion inputs, are typically used in commercial automotive electronic stability control and GPS applications, where their larger size, high power consumption and costs are accommodated. InvenSense has introduced an entirely new class of high performance silicon-based MEMS rate gyroscopes that offers smaller package sizes, lower power consumption, and lower price points suitable for consumer markets. The addition of InvenSense’s multi-axis rate gyroscope solution to the Wii MotionPlus accessory allows high precision 3D tracking of rapid gaming gestures.
“The popularity of Wii in large part is based on its popular motion sensing interface and InvenSense’s MEMS rate gyroscope represents a truly disruptive technology that possesses inherent manufacturing and high performance advantages that drives the need for a new generation of Wii Remote,â€