Patent ID: 7843430

Claim:
A method for switching an inertial input apparatus with six-axial detection ability between a two-dimensional detection mode and a three-dimensional detection mode, comprising the steps of: recording three initial accelerations (g xs , g ys ,g zs ) measured along three perpendicular directions with respect to a Cartesian coordinate system of X-, Y- and Z-axes respectively by an acceleration module of the inertial input apparatus while the inertial input apparatus is at rest on a planar surface along with an initial angular velocity ω zs gyroscope and setting an initial angle θ p of the inertial input apparatus to be zero and enabling the inertial input apparatus to enter the two-dimensional detection mode; double-integrating the difference between the initial acceleration g zs and current accelerations detected by a Z-axis accelerometer of the acceleration module for obtaining a mode-change value S z , i.e. S z =∫∫(g z −g zs ); comparing S z with a threshold value thr; maintaining the inertial input apparatus at the two-dimensional detection mode when S z <thr; and enabling the inertial input apparatus to enter the three-dimensional detection mode when S z >thr.