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| Number | Title | Issue Date |
| 7961909 | Computer interface employing a manipulated object with absolute pose detection component and a display A system that has a remote control, e.g., a wand, equipped with a relative motion sensor that outputs data indicative of a change in position of the wand. The system also has one or more light sources and a photodetector that detects their light and outputs data ind... | 06/14/2011 |
| 7826641 | Apparatus and method for determining an absolute pose of a manipulated object in a real three-dimensional environment with invariant features An apparatus and method for optically inferring an absolute pose of a manipulated object in a real three-dimensional environment from on-board the object with the aid of an on-board optical measuring arrangement. At least one invariant feature located in the environ... | 11/02/2010 |
| 7729515 | Optical navigation apparatus using fixed beacons and a centroid sensing device The present invention relates to an optical navigation system for determining a pose, which includes the position and orientation of an object in an environment. The optical navigation system uses a number of beacons affixed at known locations in the environment to ... | 06/01/2010 |
| 7474809 | Implement for optically inferring information from a jotting surface and environmental landmarks The present invention relates to a jotting implement that infers hand-jotted information from viewing a jotting surface and environmental landmarks. The hand-jotted information is any information marked on the jotting surface as a result of writing, jotting, drawing... | 01/06/2009 |
| 7268956 | Solid catadioptric lens with two viewpoints A dual viewpoint solid catadioptric lens has a first spherical refractive surface S1 having a center C1 located on an optical axis of the lens and having a radius r1, and a second spherical refractive surface S2 having a center C2 ... | 09/11/2007 |
| 7203384 | Implement for optically inferring information from a planar jotting surface The present invention relates to a jotting implement that infers hand-jotted information from a jotting surface. The hand-jotted information is any information marked on the jotting surface as a result of writing, jotting, drawing, sketching or in any other manner o... | 04/10/2007 |
| 7161664 | Apparatus and method for optical determination of intermediate distances An apparatus and a method are disclosed for optically determining a distance r to a feature from an origin or a center. The apparatus uses a beam generation unit for launching a reference beam on a reference path and a first beam on a first path. The center from whi... | 01/09/2007 |
| 7113270 | Determination of an orientation parameter of an elongate object with a scan beam apparatus An elongate object optically determines at least one of its orientation parameters relative to a plane surface. A probe radiation beam is directed from the object at various angles σ to various locations on the plane, where the angle σ is a periodic function of ti... | 09/26/2006 |
| 7110100 | Apparatus and method for determining an inclination of an elongate object contacting a plane surface An apparatus and method for determining an inclination angle θ between an axis of an elongate object such as a cane, a pointer or a jotting implement such as a pen, pencil, stylus or the like and a normal to a plane surface at times when a tip of the elongate objec... | 09/19/2006 |
| 7088440 | Method and apparatus for determining absolute position of a tip of an elongate object on a plane surface with invariant features A method and apparatus for determining a pose of an elongate object and an absolute position of its tip while the tip is in contact with a plane surface having invariant features. The surface and features are illuminated with a probe radiation and a scattered portio... | 08/08/2006 |
| 7038846 | Solid catadioptric lens with a single viewpoint A solid catadioptric lens with a single viewpoint has a spherical refractive surface with a center C on an optical axis of the lens. An ellipsoidal reflective surface of the lens faces the spherical refractive surface such that a first focus F1 of the ell... | 05/02/2006 |
| 7023536 | Apparatus and method for determining orientation parameters of an elongate object An apparatus and method employing principles of stereo vision for determining one or more orientation parameters and especially the second and third Euler angles θ, ψ of an elongate object whose tip is contacting a surface at a contact point. The apparatus has a p... | 04/04/2006 |
