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).

  • Patent number: 10212355
    Abstract: An apparatus, system, and method for dual mode imaging under different lighting conditions. A sensor is configured to image a target. A dual-mode illumination source is configured to illuminate the target while the sensor images the target. The dual-mode illumination source is configured to illuminate the target using a first wavelength of light under a first lighting condition and to illuminate the target using a second wavelength of light under a second lighting condition. The system may be used in an optical tracking system to track the motion of an object.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: February 19, 2019
    Assignee: THALES DEFENSE & SECURITY, INC.
    Inventors: William Whitehouse, Eric Foxlin, Thomas Calloway, John Popoolapade
  • Publication number: 20180296136
    Abstract: Techniques for user identification by a biometric monitoring device are disclosed. In one aspect, a method of operating a biometric monitoring device may involve measuring a weight of a user in response to detecting that the user is standing on a platform, determining, based on sensor data generated by a sensor, a user parameter indicative of the user's identification, identifying one of a plurality of user profiles as corresponding to the user based on a comparison of the user parameter to parameter values and a comparison of the measured weight of the user to weight values, and updating the identified user profile based on at least one of the measured weight and the user parameter.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 18, 2018
    Inventors: Eric Foxlin, Molly Glauberman, Erick Fuentes
  • Patent number: 9766075
    Abstract: A method, a system, and a computer program product for tracking an object moving relative to a moving platform, the moving platform moving relative to an external frame of reference. The system includes An inertial sensor for tracking the object relative to the external reference frame, a non-inertial sensor for tracking the object relative to the moving platform, and a processor to perform sensor fusion of the inertial and non-inertial measurements in order to accurately track the object and concurrently estimate the misalignment of the non-inertial sensor's reference frame relative to the moving platform.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: September 19, 2017
    Assignee: THALES VISIONIX, INC.
    Inventor: Eric Foxlin
  • Patent number: 9730027
    Abstract: Techniques for automatic tracking of user data for exercises are disclosed. In one aspect, a method of operating a wearable device may involve determining that a user of the wearable device has started an exercise, activating the GPS receiver in response to determining that the user has started the exercise, and detecting a time at which the GPS receiver achieves an initial GPS fix of a location of the wearable device. The method may further involve logging, based on output of the one or more biometric sensors, a first set of user data during a first time interval between the start of the exercise and the detected time of the initial GPS fix, and back-filling an exercise route of the user during the first time interval based on the first set of user data.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: August 8, 2017
    Assignee: Fitbit, Inc.
    Inventors: Hao-Wei Su, Eric Foxlin, Subramaniam Venkatraman, Logan Niehaus, Peter Duyan, Shelten Gee Jao Yuen, Timothy M. Roberts
  • Patent number: 9588214
    Abstract: Technology described in this document can be embodied in an optical sensor that includes a rectangular array of at least four photodetector cells of substantially equal size. An opaque mask is affixed over the rectangular array. The opaque mask defines a substantially rectangular aperture for admitting light onto only a portion of the surface of each of the at least four photodetector cells, where the aperture can be centrally positioned over the rectangular array.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: March 7, 2017
    Assignee: THALES VISIONIX, INC.
    Inventor: Eric Foxlin
  • Publication number: 20170026560
    Abstract: An apparatus, system, and method for dual mode imaging under different lighting conditions. A sensor is configured to image a target. A dual-mode illumination source is configured to illuminate the target while the sensor images the target. The dual-mode illumination source is configured to illuminate the target using a first wavelength of light under a first lighting condition and to illuminate the target using a second wavelength of light under a second lighting condition. The system may be used in an optical tracking system to track the motion of an object.
    Type: Application
    Filed: February 24, 2016
    Publication date: January 26, 2017
    Inventors: William WHITEHOUSE, Eric FOXLIN, Thomas CALLOWAY, John POPOOLAPADE
  • Publication number: 20160269868
    Abstract: Techniques for automatic tracking of user data for exercises are disclosed. In one aspect, a method of operating a wearable device may involve determining that a user of the wearable device has started an exercise, activating the GPS receiver in response to determining that the user has started the exercise, and detecting a time at which the GPS receiver achieves an initial GPS fix of a location of the wearable device. The method may further involve logging, based on output of the one or more biometric sensors, a first set of user data during a first time interval between the start of the exercise and the detected time of the initial GPS fix, and back-filling an exercise route of the user during the first time interval based on the first set of user data.
    Type: Application
    Filed: May 19, 2016
    Publication date: September 15, 2016
    Inventors: Hao-Wei Su, Eric Foxlin, Subramaniam Venkatraman, Logan Niehaus, Peter Duyan, Shelton Gee Jao Yuen, Timothy M. Roberts
  • Patent number: 9243902
    Abstract: Aspects of the present invention relate to systems, methods, and computer program products for tracking an orientation of a first object. The system includes a light emitting device located relative to a second object at a fixed predetermined position; a sensor having a photodetector array that is configured to receive incident light emitted from the light emitting device, the photodetector array being mounted on the first object; and a processor coupled to the photodetector array, the processor configured to determine the orientation of the first object relative to the second object based on an angle of incident light detected by the photodetector array from the light emitting device.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: January 26, 2016
    Assignee: Thales Visionix, Inc.
    Inventors: Robert B. Atac, Eric Foxlin
  • Publication number: 20150317838
    Abstract: A method, a system, and a computer program product for tracking an object moving relative to a moving platform, the moving platform moving relative to an external frame of reference. The system includes An inertial sensor for tracking the object relative to the external reference frame, a non-inertial sensor for tracking the object relative to the moving platform, and a processor to perform sensor fusion of the inertial and non-inertial measurements in order to accurately track the object and concurrently estimate the misalignment of the non-inertial sensor's reference frame relative to the moving platform.
    Type: Application
    Filed: May 1, 2015
    Publication date: November 5, 2015
    Inventor: Eric FOXLIN
  • Publication number: 20150301153
    Abstract: Technology described in this document can be embodied in an optical sensor that includes a rectangular array of at least four photodetector cells of substantially equal size. An opaque mask is affixed over the rectangular array. The opaque mask defines a substantially rectangular aperture for admitting light onto only a portion of the surface of each of the at least four photodetector cells, where the aperture can be centrally positioned over the rectangular array.
    Type: Application
    Filed: July 26, 2012
    Publication date: October 22, 2015
    Applicant: INTERSENSE, LLC
    Inventor: Eric Foxlin
  • Publication number: 20150226546
    Abstract: Aspects of the present invention relate to systems, methods, and computer program products for tracking an orientation of a first object. The system includes a light emitting device located relative to a second object at a fixed predetermined position; a sensor having a photodetector array that is configured to receive incident light emitted from the light emitting device, the photodetector array being mounted on the first object; and a processor coupled to the photodetector array, the processor configured to determine the orientation of the first object relative to the second object based on an angle of incident light detected by the photodetector array from the light emitting device.
    Type: Application
    Filed: March 13, 2014
    Publication date: August 13, 2015
    Inventors: Robert B. ATAC, Eric Foxlin
  • Patent number: 8972182
    Abstract: Among other things, positioning a magnetic instrument on a pedestrian; positioning an inertial instrument on a foot of a pedestrian; receiving positioning signals at the pedestrian; aligning the inertial instrument based in part on the received positioning signals; calibrating the magnetic instrument using the inertial instrument; and tracking the pedestrian using the calibrated magnetic instrument and the inertial instrument.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: March 3, 2015
    Assignee: Thales Visionix, Inc.
    Inventor: Eric Foxlin
  • Publication number: 20140266878
    Abstract: 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: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: THALES VISIONIX, INC.
    Inventors: Robert B. ATAC, Eric FOXLIN
  • Patent number: 8762091
    Abstract: 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: Grant
    Filed: June 3, 2011
    Date of Patent: June 24, 2014
    Assignee: Thales Visionix, Inc.
    Inventors: Eric Foxlin, Sheng Wan
  • Patent number: 8696458
    Abstract: 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: Grant
    Filed: February 15, 2008
    Date of Patent: April 15, 2014
    Assignee: Thales Visionix, Inc.
    Inventors: Eric Foxlin, Dean Wormell, Thomas C. Browne, Michael Donfrancesco
  • Patent number: 8473241
    Abstract: 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: Grant
    Filed: July 30, 2010
    Date of Patent: June 25, 2013
    Assignee: Thales Visionix, Inc.
    Inventor: Eric Foxlin
  • Patent number: 8224024
    Abstract: 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: Grant
    Filed: October 4, 2006
    Date of Patent: July 17, 2012
    Assignee: InterSense, LLC
    Inventors: Eric Foxlin, Leonid Naimark
  • Patent number: 7900524
    Abstract: 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: Grant
    Filed: September 9, 2008
    Date of Patent: March 8, 2011
    Assignee: InterSense, Inc.
    Inventors: Tom Calloway, Dan Holmes, Eric Foxlin, Thomas C. Browne, Michael Donfrancesco, Dean Wormell
  • Publication number: 20110054836
    Abstract: 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: Application
    Filed: July 30, 2010
    Publication date: March 3, 2011
    Inventor: Eric Foxlin
  • Patent number: 7725253
    Abstract: 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: Grant
    Filed: June 8, 2005
    Date of Patent: May 25, 2010
    Assignee: InterSense, Inc.
    Inventor: Eric Foxlin