Movement detection device, electronic device, movement detection method and computer readable medium

摘要

Tri-axial acceleration component data detected by a tri-axial acceleration sensor of acceleration acting on a movement detection device is split into respective stationary components obtained by low-pass filtering processing and movement components of the acceleration component data from which the respective stationary component has been removed. Which axial direction has been moved in is detected based on the split movement component expressing the maximum value. A shake duration is detected as a period of time from the point in time when this maximum movement component exceeded a threshold value expressing an upper limit value of a specific range up to once again becoming a value in the specific range after becoming less than a threshold value expressing a lower limit value, or as a period of time from the point in time when the movement component became less than the lower threshold value up to once again becoming a value in the specific range after exceeding the upper threshold value. The magnitude of movement is determined by whether or not the shake duration is a determination period or longer, or by whether or not the vector integral value over the shake duration is a determination threshold value or greater.