Patent ID: 7841236

Claim:
An electric device with motion detection ability, comprising: a micro inertial sensing module, further comprising: a first accelerometer, for detecting a displacement measured with respect to a first axis and a rotation measured with respect to a second axis; an inertial part comprising a second accelerometer for detecting a displacement measured with respect to the second axis and a rotation measured with respect to the first axis, and an auxiliary accelerometer, being positioned apart from the second accelerometer by a distance, wherein a rotation measured with respect to a third axis is acquired by performing a differential operation upon the acceleration variations of one degree of freedom obtained respectively from the detection of the second accelerometer and the auxiliary accelerometer; and a third accelerometer for detecting a displacement measured with respect to a third axis; and a sensing signal processor coupled to the micro inertial sensing module for receiving and processing a sensing signal to form a system processing signal to be adopted as an input to the electric device.