Abstract: An input device with three-dimensional, six-degrees-of-freedom data input for a computer having a tracker with an array of tracking points defining a first axis and a second axis or plane is described. Light reflected from, or given off from the tracking points, is captured by a camera. From the two-dimensional images captured, three-dimensional data relating to the position and orientation of the input device may be obtained from the relative positions of the tracking points by a provided algorithm and lookup table. The use of one of the tracking points as an on-off indicator of the tracker's orientation towards or away from the camera greatly expands the use of such technology from limited hemispherical tracking to all-round, full-spherical tracking.

Abstract: An input device with three-dimensional, six-degrees-of-freedom data input for a computer having a tracker with an array of tracking points defining a first axis and a second axis or plane is described. Light reflected from, or given off from the tracking points, is captured by a camera. From the two-dimensional images captured, three-dimensional data relating to the position and orientation of the input device may be obtained from the relative positions of the tracking points by a provided algorithm and lookup table. The use of one of the tracking points as an on-off indicator of the tracker's orientation towards or away from the camera greatly expands the use of such technology from limited hemispherical tracking to all-round, full-spherical tracking.

Abstract: A golf practice device, for use in combination with a golf ball which simulates the performance of a real hole of a conventional golf course. The device has a planar base support with a base aperture formed in its top surface to accommodate an appropriately sized base rim for either stationary or rotational engagement therein. A deflector attached to the base rim with an inner surface curved to dissipate a determined amount of the total kinetic energy from the golf ball struck toward the device redirects the ball into or away from a base cavity depending upon the amount of force the ball possesses at when it strikes and travels over the curved deflector. Additional dissipation of energy from the golf ball may be achieved by forming the deflector from material which will absorb some of the balls energy when striking the deflector.