3D pointing devices with orientation compensation and improved usability

摘要

Systems and methods according to the present invention describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the 3D pointing device) into a second frame of reference (e.g., a user's frame of reference). One exemplary embodiment of the present invention removes effects associated with a tilt orientation in which the 3D pointing device is held by a user.

主权项

1. A 3D pointing device comprising:
a sensor configured to generate a first output associated with motion of said 3D pointing device; an accelerometer configured to detect acceleration of said 3D pointing device and outputting at least one second output; and a processing unit configured to receive and process said first output from said sensor and said at least one second output from said accelerometer, said process including:
determining an orientation in which said 3D pointing device is held using said at least one second output,compensating said first output based on said determined orientation by performing a two-dimensional rotational transform on said first output to generate an output which is substantially independent of a tilt of said 3D pointing device with reference to a predetermined axis; anddetermining a gesture associated with the detected movement.