Patent ID: 7365737
Filing Date: 2008-04-29
Classification: G06F

Abstract:
1. A motion controlled handheld device comprising: a display having a viewable surface and operable to generate an image; a gesture database maintaining a plurality of gestures, each gesture defined by a motion of the device with respect to a first position of the device; a motion detection module operable to detect motion of the handheld device within three dimensions and to identify components of the motion in relation to the viewable surface; and a control module operable to: identify a base reference position of the device; track movement of the device, using the motion detection module, to identify a potential gesture; compare the potential gesture against the gestures in the gesture database; determine whether the potential gesture matches to a compared one of the gestures based on whether a difference between the potential gesture and the compared gesture is within a precision threshold; and wherein a level of precision required by the precision threshold is based at least in part on an environmental state of the device, the environmental state comprising a motion state describing an amount of background noise expected in the components of the motion.