Patents by Inventor Eric Foxlin
Eric Foxlin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140266878Abstract: Aspects of the present invention relate to systems, methods, and computer program products for tracking an orientation of an object. The system includes a first sensor that measures the orientation of the object relative to an external reference frame and generates an orientation signal based on the measured orientation of the object, the first sensor being subject to drift over time; a second sensor that receives a global positioning system (GPS) signal and generates a drift compensation signal based on the received GPS signal; and a processor coupled to the first sensor and the second sensor, the processor generating a drift-corrected orientation signal based on the orientation signal from the first sensor and the drift compensation signal from the second sensor.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: THALES VISIONIX, INC.Inventors: Robert B. ATAC, Eric FOXLIN
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Patent number: 8762091Abstract: An apparatus for measuring an inertial property on a set of one or more axes is disclosed. The apparatus includes a first inertial sensor arranged to measure the inertial property, having a first predetermined resolution and a first predetermined measurement range, and a second inertial sensor arranged to measure the inertial property, having a second predetermined resolution and a second predetermined measurement range. The second resolution is coarser than the first and the second measurement range is larger than the first. A processing system is adapted to receive measurement signals from the first and second inertial sensors and, when the output of the first inertial sensor is within the first predetermined measurement range, to update an error estimate for adjusting the output of the second inertial sensor, based on the measurement signals from the first and second inertial sensors.Type: GrantFiled: June 3, 2011Date of Patent: June 24, 2014Assignee: Thales Visionix, Inc.Inventors: Eric Foxlin, Sheng Wan
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Patent number: 8696458Abstract: Systems and methods for tracking the motion of a game controller and a player's body part are disclosed. The method includes receiving a video signal from a webcam, generating movement data corresponding to the motion of the game controller, tracking first predetermined degrees of freedom of motion of the body part, generating feature location data based on a location of at least one identifiable visual feature of the game controller, and estimating second predetermined degrees of freedom of a motion of the game controller.Type: GrantFiled: February 15, 2008Date of Patent: April 15, 2014Assignee: Thales Visionix, Inc.Inventors: Eric Foxlin, Dean Wormell, Thomas C. Browne, Michael Donfrancesco
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Patent number: 8473241Abstract: Among other things, first data is received from an inertial tracking device worn by a first person, the first data approximating locations along a first path that was traversed by the first person. Second data is received from an inertial tracking device worn by a second person, the second data approximating locations along a second path, similar to the first path, that is being traversed by the second person. A determination is made about how to guide the second person to reach the first person by using the first data and the second data to correlate locations along the first path and corresponding locations along the second path.Type: GrantFiled: July 30, 2010Date of Patent: June 25, 2013Assignee: Thales Visionix, Inc.Inventor: Eric Foxlin
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Patent number: 8224024Abstract: The spatial location and azimuth of an object are computed from the locations, in a single camera image, of exactly two points on the object and information about an orientation of the object. One or more groups of four or more collinear markers are located in an image, and for each group, first and second outer markers are determined, the distances from each outer marker to the nearest marker in the same group are compared, and the outer marker with a closer nearest marker is identified as the first outer marker. Based on known distances between the outer markers and the marker nearest the first outer marker, an amount of perspective distortion of the group of markers in the image is estimated. Based on the perspective distortion, relative distances from each other point in the group to one of the outer markers are determined. Based on the relative distances, the group is identified.Type: GrantFiled: October 4, 2006Date of Patent: July 17, 2012Assignee: InterSense, LLCInventors: Eric Foxlin, Leonid Naimark
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Patent number: 7900524Abstract: Disclosed is a system for monitoring operation of a hand tool including an accelerometer coupled to the hand tool, a transmitter in data communication with the accelerometer, and a processor for receiving data from the transmitter and analyzing the data to detect an event associated with operation of the hand tool.Type: GrantFiled: September 9, 2008Date of Patent: March 8, 2011Assignee: InterSense, Inc.Inventors: Tom Calloway, Dan Holmes, Eric Foxlin, Thomas C. Browne, Michael Donfrancesco, Dean Wormell
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Publication number: 20110054836Abstract: Among other things, first data is received from an inertial tracking device worn by a first person, the first data approximating locations along a first path that was traversed by the first person. Second data is received from an inertial tracking device worn by a second person, the second data approximating locations along a second path, similar to the first path, that is being traversed by the second person. A determination is made about how to guide the second person to reach the first person by using the first data and the second data to correlate locations along the first path and corresponding locations along the second path.Type: ApplicationFiled: July 30, 2010Publication date: March 3, 2011Inventor: Eric Foxlin
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Patent number: 7725253Abstract: A navigation or motion tracking system includes components associated with particular sensors, which are decoupled from a tracking component that takes advantage of information in the sensor measurements. The architecture of this system enables development of sensor-specific components independently of the tracking component, and enables sensors and their associated components to be added or removed without having to re-implement the tracking component. In a software implementation of the system, sensor-specific software components may be dynamically incorporated into the system and the tracking component is then automatically configured to take advantage of measurements from the corresponding sensors without having to modify the tracking component.Type: GrantFiled: June 8, 2005Date of Patent: May 25, 2010Assignee: InterSense, Inc.Inventor: Eric Foxlin
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Publication number: 20100058901Abstract: Disclosed is a system for monitoring operation of a hand tool including an accelerometer coupled to the hand tool, a transmitter in data communication with the accelerometer, and a processor for receiving data from the transmitter and analyzing the data to detect an event associated with operation of the hand tool.Type: ApplicationFiled: September 9, 2008Publication date: March 11, 2010Inventors: TOM CALLOWAY, DAN HOLMES, ERIC FOXLIN, THOMAS C. BROWNE, MICHAEL DONFRANCESCO, DEAN WORMELL
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Publication number: 20090209343Abstract: Systems and methods for tracking the motion of a game controller and a player's body part are disclosed. The method includes receiving a video signal from a webcam, generating movement data corresponding to the motion of the game controller, tracking first predetermined degrees of freedom of motion of the body part, generating feature location data based on a location of at least one identifiable visual feature of the game controller, and estimating second predetermined degrees of freedom of a motion of the game controller.Type: ApplicationFiled: February 15, 2008Publication date: August 20, 2009Inventors: Eric Foxlin, Dean Wormell, Thomas C. Browne, Michael Donfrancesco
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Patent number: 7301648Abstract: A new tracking technique is essentially “sourceless” in that it can be used anywhere with no set-up, yet it enables a much wider range of virtual environment-style navigation and interaction techniques than does a simple head-orientation tracker. A sourceless head orientation tracker is combined with a head-worn tracking device that tracks a hand-mounted 3D beacon relative to the head. The system encourages use of intuitive interaction techniques which exploit proprioception.Type: GrantFiled: August 10, 2006Date of Patent: November 27, 2007Assignee: InterSense, Inc.Inventor: Eric Foxlin
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Patent number: 7231063Abstract: A new fiducial design allows having thousands of different codes. These fiducials are printed on a standard black-and-white (or color) printer and easily could be mounted on a walls, ceiling and objects in a room. The design includes “solid” outside mono-color ring and 2-D dense inside coding scheme. Image processing algorithms are implemented in Smart Camera with a built-in DSP to run all required image-processing tasks. A tracking system implementation includes an inertial measurement unit and one outward-looking wide-angle Smart Camera with possible extensions to number of stationary inward-looking cameras. The system operates in various real-world lighting conditions without any user intervention due to homomorphic image processing processes for extracting fiducials in the presence of very non-uniform lighting.Type: GrantFiled: August 9, 2002Date of Patent: June 12, 2007Assignee: InterSense, Inc.Inventors: Leonid Naimark, Eric Foxlin
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Publication number: 20070081695Abstract: The spatial location and azimuth of an object are computed from the locations, in a single camera image, of exactly two points on the object and information about an orientation of the object. One or more groups of four or more collinear markers are located in an image, and for each group, first and second outer markers are determined, the distances from each outer marker to the nearest marker in the same group are compared, and the outer marker with a closer nearest marker is identified as the first outer marker. Based on known distances between the outer markers and the marker nearest the first outer marker, an amount of perspective distortion of the group of markers in the image is estimated. Based on the perspective distortion, relative distances from each other point in the group to one of the outer markers are determined. Based on the relative distances, the group is identified.Type: ApplicationFiled: October 4, 2006Publication date: April 12, 2007Inventors: Eric Foxlin, Leonid Naimark
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Publication number: 20060284792Abstract: A new tracking technique is essentially “sourceless” in that it can be used anywhere with no set-up, yet it enables a much wider range of virtual environment-style navigation and interaction techniques than does a simple head-orientation tracker. A sourceless head orientation tracker is combined with a head-worn tracking device that tracks a hand-mounted 3D beacon relative to the head. The system encourages use of intuitive interaction techniques which exploit proprioception.Type: ApplicationFiled: August 10, 2006Publication date: December 21, 2006Inventor: Eric Foxlin
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Patent number: 7000469Abstract: A system for tracking the motion of an object relative to a moving reference frame includes a first inertial sensor mounted on the tracked object; a second inertial sensor mounted on the moving reference frame; a third inertial sensor mounted on the moving reference frame and spaced apart from the second inertial sensor; and an element coupled to said first and second and third inertial sensors and configured to determine a position of the object relative to the moving reference frame based on the signals from the first and second and third inertial sensor.Type: GrantFiled: January 22, 2004Date of Patent: February 21, 2006Assignee: Intersense, Inc.Inventors: Eric Foxlin, Yury Altshuler
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Publication number: 20060027404Abstract: A navigation or motion tracking system includes components associated with particular sensors, which are decoupled from a tracking component that takes advantage of information in the sensor measurements. The architecture of this system enables development of sensor-specific components independently of the tracking component, and enables sensors and their associated components to be added or removed without having to re-implement the tracking component. In a software implementation of the system, sensor-specific software components may be dynamically incorporated into the system and the tracking component is then automatically configured to take advantage of measurements from the corresponding sensors without having to modify the tracking component.Type: ApplicationFiled: June 8, 2005Publication date: February 9, 2006Inventor: Eric Foxlin
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Patent number: 6922632Abstract: A navigation or motion tracking system includes components associated with particular sensors, which are decoupled from a tracking component that takes advantage of information in the sensor measurements. The architecture of this system enables development of sensor-specific components independently of the tracking component, and enables sensors and their associated components to be added or removed without having to re-implement the tracking component. In a software implementation of the system, sensor-specific software components may be dynamically incorporated into the system and the tracking component is then automatically configured to take advantage of measurements from the corresponding sensors without having to modify the tracking component.Type: GrantFiled: August 11, 2003Date of Patent: July 26, 2005Assignee: InterSense, Inc.Inventor: Eric Foxlin
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Publication number: 20040201857Abstract: A new tracking technique is essentially ”sourceless” in that it can be used anywhere with no set-up, yet it enables a much wider range of virtual environment-style navigation and interaction techniques than does a simple head-orientation tracker. A sourceless head orientation tracker is combined with a head-worn tracking device that tracks a hand-mounted 3D beacon relative to the head. The system encourages use of intuitive interaction techniques which exploit proprioception.Type: ApplicationFiled: April 30, 2004Publication date: October 14, 2004Applicant: Intersense, Inc., a Delaware corporationInventor: Eric Foxlin
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Publication number: 20040149036Abstract: A system for tracking the motion of an object relative to a moving reference frame includes a first inertial sensor mounted on the tracked object; a second inertial sensor mounted on the moving reference frame; a third inertial sensor mounted on the moving reference frame and spaced apart from the second inertial sensor; and an element coupled to said first and second and third inertial sensors and configured to determine a position of the object relative to the moving reference frame based on the signals from the first and second and third inertial sensor.Type: ApplicationFiled: January 22, 2004Publication date: August 5, 2004Inventors: Eric Foxlin, Yury Altshuler
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Patent number: 6757068Abstract: A new tracking technique is essentially “sourceless” in that it can be used anywhere with no set-up, yet it enables a much wider range of virtual environment-style navigation and interaction techniques than does a simple head-orientation tracker. A sourceless head orientation tracker is combined with a head-worn tracking device that tracks a hand-mounted 3D beacon relative to the head. The system encourages use of intuitive interaction techniques which exploit proprioception.Type: GrantFiled: January 26, 2001Date of Patent: June 29, 2004Assignee: InterSense, Inc.Inventor: Eric Foxlin