Systems and methods according to the present invention address these needs and others by providing a handheld device, e.g., a 3D pointing device, which uses at least one sensor to detect motion of the handheld device. The detected motion can then be mapped into a desired output, e.g., cursor movemen...http://www.google.fr/patents/US7239301?utm_source=gb-gplus-shareBrevet US7239301 - 3D pointing devices and methods
