Sensor fusion implemented on Android?

Question

I listened to this talk: http://www.youtube.com/watch?v=C7JQ7Rpwn2k

which is Invensense Inc prototyping their \"Sensor fusion\" system, which is where they combine gyro,

Answer 1

There is no such thing as a 'gravity' sensor (ignoring the search for gravity waves!). Gravity IS an acceleration and hence is detected by the linear accelerometer as well as any other acceleration the sensor may be subject.

Answer 2

Have a look at the first answer to this question. There you will find the explanation of the different types of sensors, directly from one of the Google developers working on these topics. For your information, gyroscope sensor is not included in any of the new "fused" sensors.