Patent ID: 8310547
Filing Date: 2012-11-13
Classification: G06F

Abstract:
1. A device for recognizing a motion, comprising: an input device that includes a light source and an inertial sensor; a motion recognition mechanism that extracts a trajectory of a user's motion by detecting position change of the light source for a user's motion section that is determined in response to a sensing signal of the inertial sensor; and a motion determination unit that calculates the varied amount of energy in response to the sensing signal, and determines the user's motion section in accordance with the state of the user's motion by comparing the calculated varied amount of energy with at least one reference level, wherein the at least one of reference level includes a first reference level and a second reference level, and wherein the motion determination unit determines that the user's motion is a motion start state when the varied amount of energy is the same or more than the second reference level, and determines that the state of the user's motion is one of a motion-waiting state and a motion end state when the varied amount of energy is smaller than the second reference level.