Patent ID: 7739074

Claim:
A method of recognizing and tracking a spatial point, comprising: a point light source, formed by a movable active point light source, which is a scattered visible light or non-visible light emitted from a point light source, or formed by a movable passive point light source which is a pointed reflecting object for reflecting the light of other light sources; and a spatial point recognition device, for receiving the scattered light emitted by the point light source, and calculating and outputting a convergent point coordinates signal (X V , Y V , Z V ) of the spatial point recognition device, and an object point coordinates signal (X P , Y P , Z P ) of the point light source, and the spatial point recognition device being capable of moving the convergent point, such that the coordinates of the convergent point are superimposed with the coordinates of the object point, so as to achieve the purpose of tracking the point light source automatically, at the same the spatial point recognition device also receives the coordinates signal (X V New , Y V New , Z V New ) of a new convergent point provided by other external devices to reset the position of the convergent point, so as to achieve the purpose of resetting the convergent point of the spatial point recognition device.