POSTURE INPUT DEVICE, PEN TYPE INPUT DEVICE WITH POSTURE INPUT FUNCTION, AND PEN TYPE INPUT SYSTEM WITH PEN TYPE INPUT DEVICE

摘要

PROBLEM TO BE SOLVED: To enable input to a three-dimensional space with a pen type input device as small-sized input device capable of performing the input to a three- dimensional virtual space is desired. ;SOLUTION: A posture angle of a device in a gravity coordinate system is calculated based on rotation angle speed detected by using gyroscopes 3a to 3c by a posture angle calculating part 43. The gravity direction vector is calculated based on the posture angle by a gravity direction vector calculating part 44. The acceleration direction vector is calculated based on an acceleration detected by using acceleration sensors 2a to 2c by an acceleration direction vector calculating part 45. The rotation correcting vector of the posture angle is calculated based on the gravity direction vector and the acceleration direction vector by a rotation correcting vector calculating part 46. The posture angle calculated by the posture angle calculating part 43 is corrected based on the rotation correcting vector of the posture angle and an exact posture angle is calculated by a posture angle correcting part 47.;COPYRIGHT: (C)1999,JPO