Patent ID: 9098123
Filing Date: 2015-08-04
Classification: G06F,G06K

Abstract:
1. A moving trajectory generation method, comprising the steps of: sensing a movement of a writing device in the air by a moving trajectory sensing module so as to generate a moving trajectory and then generate a moving trajectory signal, wherein the moving trajectory signal includes a first axial signal, a second axial signal, and a third axial signal, and a first axis, a second axis, and a third axis are perpendicular to each other; generating a virtual projection plane and a trajectory projection plane by a trajectory reconstruction unit of a trajectory reconstruction module according to the moving trajectory signal, wherein the weakest signal magnitude of the first axial signal, the second axial signal, and the third axial signal is determined by comparing the first, second and third axial signals, and the axis of the weakest axial signal is used as the normal vector axis to generate the virtual projection plane; calculating an angle between the virtual projection plane and the trajectory projection plane, and generating a transformation matrix according to the angle; transforming the virtual projection plane to the trajectory projection plane according to the transformation matrix; and projecting the moving trajectory signal to the trajectory projection plane so as to obtain a two-dimensional trajectory signal.