Method and Apparatus for Calculating Rotation Angle of Device

摘要

A device configured to determine a rotation angle with respect to a proceeding direction includes an accelerometer configured to obtain acceleration information related to movements of the device; a storage unit configured to store the acceleration information; and a controller configured to transform coordinates of the acceleration information, filter the acceleration information on the transformed coordinates, and determine the rotation angle of the device with respect to the proceeding direction of the device by using gravitational acceleration information on the transformed coordinates. The gravitational acceleration information is derived by using information about a time point when a vertical acceleration component at the transformed coordinates of the device has a maximum value, from among the acceleration information.

主权项

1. A method of determining a rotation angle of a device with respect to a proceeding direction of the device, the method comprising:
obtaining, from an accelerometer of the device, acceleration information related to movements of the device; transforming coordinates of the acceleration information of the device; filtering the acceleration information on the transformed coordinates of the device; and determining the rotation angle of the device with respect to the proceeding direction of the device by using gravitational acceleration of gravity information on the transformed coordinates, wherein the gravitational acceleration is derived by using information about a time point when a vertical acceleration component at the transformed coordinates of the device has a maximum value, from among the acceleration information.