Patents by Inventor Matthew G. Liberty

Matthew G. Liberty 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).

  • Determining Forward Pointing Direction of a Handheld Device
    Publication number: 20130215019
    Abstract: A forward pointing direction associated with a handheld device is estimated or determined by, for example, calculating a center of rotation of the device. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.
    Type: Application
    Filed: June 3, 2011
    Publication date: August 22, 2013
    Applicant: Hillcrest Laboratories Inc.
    Inventors: Matthew G. Liberty, Bryan A. Cook
  • Real-time dynamic tracking of bias
    Patent number: 8407022
    Abstract: A bias value associated with a sensor, e.g., a time-varying, non-zero value which is output from a sensor when it is motionless, is estimated using at least two, different bias estimating techniques. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 26, 2013
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Hua Sheng, Matthew G. Liberty, Christopher D. Roller, Charles W. K. Gritton
  • Methods and devices for removing unintentional movement in 3D pointing devices
    Patent number: 8237657
    Abstract: Systems and methods according to the present invention describe 3D pointing devices and methods which detect movement of the 3D pointing device and remove unintentional movement from the output readings.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: August 7, 2012
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Matthew G. Liberty, Frank A. Hunleth
  • 3D Pointing Devices with Orientation Compensation and Improved Usability
    Publication number: 20120075183
    Abstract: Systems and methods according to the present invention describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the 3D pointing device) into a second frame of reference (e.g., a user's frame of reference). One exemplary embodiment of the present invention removes effects associated with a tilt orientation in which the 3D pointing device is held by a user.
    Type: Application
    Filed: November 28, 2011
    Publication date: March 29, 2012
    Applicant: HILLCREST LABORATORIES, INC.
    Inventor: Matthew G. Liberty
  • 3D pointing devices with orientation compensation and improved usability
    Patent number: 8072424
    Abstract: Systems and methods according to the present invention describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the 3D pointing device) into a second frame of reference (e.g., a user's frame of reference). One exemplary embodiment of the present invention removes effects associated with a tilt orientation in which the 3D pointing device is held by a user.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: December 6, 2011
    Assignee: Hillcrest Laboratories, Inc.
    Inventor: Matthew G. Liberty
  • 3D Pointer Mapping
    Publication number: 20110227825
    Abstract: Systems, devices, methods and software are described for mapping movement or motion of a 3D pointing device into cursor position, e.g., for use in rendering the cursor on a display. Absolute and relative type mapping algorithms are described. Mapping algorithms can be combined to obtain beneficial characteristics from different types of mapping.
    Type: Application
    Filed: July 1, 2009
    Publication date: September 22, 2011
    Applicant: HILLCREST LABORATORIES, INC.
    Inventors: Matthew G. Liberty, Bryan A. Cook, Hua Sheng
  • Real-Time Dynamic Tracking of Bias
    Publication number: 20110095979
    Abstract: A bias value associated with a sensor, e.g., a time-varying, non-zero value which is output from a sensor when it is motionless, is estimated using at least two, different bias estimating techniques. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.
    Type: Application
    Filed: December 17, 2010
    Publication date: April 28, 2011
    Applicant: HILLCREST LABORATORIES, INC.
    Inventors: Hua SHENG, Matthew G. LIBERTY, Christopher D. ROLLER, Charles W.K. GRITTON
  • Real-time dynamic tracking of bias
    Patent number: 7860676
    Abstract: A bias value associated with a sensor, e.g., a time-varying, non-zero value which is output from a sensor when it is motionless, is estimated using at least two, different bias estimating techniques. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: December 28, 2010
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Hua Sheng, Matthew G. Liberty, Christopher D. Roller, Charles W. K. Gritton
  • Methods and systems for calibrating a sensor using a vector field
    Patent number: 7719261
    Abstract: Systems and methods according to exemplary embodiments address, among other features, the area of calibrating a sensor using a constant vector field. In one exemplary embodiment, a method for calibrating a sensor includes the steps of placing the sensor in a cube, rotating the cube between a plurality of different orientations, collecting at least one reading from the sensor from each of the plurality of different orientations and calibrating the sensor using the collected readings.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: May 18, 2010
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Friedrich Geck, Matthew G. Liberty, Mark Turner
  • TRACKING DETERMINATION BASED ON INTENSITY ANGULAR GRADIENT OF A WAVE
    Publication number: 20090259432
    Abstract: Handheld device, base station, computer readable medium and method for detecting a position of a handheld device. The method includes measuring intensities of at least one beam emitted by a base station; calculating relative intensities based on the measured intensities; and determining the position of the handheld device based on the measured intensities and the calculated relative intensities.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 15, 2009
    Inventors: Matthew G. Liberty, Joseph S. Tanen
  • METHODS AND DEVICES FOR REMOVING UNINTENTIONAL MOVEMENT IN 3D POINTING DEVICES
    Publication number: 20090128489
    Abstract: Systems and methods according to the present invention describe 3D pointing devices and methods which detect movement of the 3D pointing device and remove unintentional movement from the output readings.
    Type: Application
    Filed: January 30, 2009
    Publication date: May 21, 2009
    Inventors: Matthew G. Liberty, Frank A. Hunleth
  • Methods and devices for removing unintentional movement in 3D pointing devices
    Patent number: 7535456
    Abstract: Systems and methods according to the present invention describe 3D pointing devices and methods which detect movement of the 3D pointing device and remove unintentional movement from the output readings.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: May 19, 2009
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Matthew G. Liberty, Frank A. Hunleth
  • User interface devices and methods employing accelerometers
    Patent number: 7489299
    Abstract: Systems and methods according to the present invention address these needs and others by providing a 3D pointing device and methods for 3D pointing which provide accurate translation of movement of the 3D pointing device into user interface commands, e.g., cursor movement. According to exemplary embodiments of the present invention, a 3D pointing device includes a plurality of accelerometers.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: February 10, 2009
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Matthew G. Liberty, Daniel S. Simpkins
  • 3D pointing devices and methods
    Patent number: 7489298
    Abstract: Systems and methods according to the present invention address these needs and others by providing a handheld device, e.g., a 3D pointing device, which uses at least one sensor to detect motion of the handheld device. The detected motion can then be mapped into a desired output, e.g., cursor movement.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: February 10, 2009
    Assignee: Hillcrest Laboratories, Inc.
    Inventors: Matthew G. Liberty, Daniel S. Simpkins, Charles W. K. Gritton, Mark Turner, Frank A. Hunleth
  • Real-Time Dynamic Tracking of Bias
    Publication number: 20090033807
    Abstract: A bias value associated with a sensor, e.g., a time-varying, non-zero value which is output from a sensor when it is motionless, is estimated using at least two, different bias estimating techniques. A resultant combined or selected bias estimate may then be used to compensate the biased output of the sensor in, e.g., a 3D pointing device.
    Type: Application
    Filed: June 27, 2008
    Publication date: February 5, 2009
    Inventors: Hua Sheng, Matthew G. Liberty, Christopher D. Roller, Charles W.K. Gritton
  • 3D Pointing Devices with Orientation Compensation and Improved Usability
    Publication number: 20080291163
    Abstract: Systems and methods according to the present invention describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the 3D pointing device) into a second frame of reference (e.g., a user's frame of reference). One exemplary embodiment of the present invention removes effects associated with a tilt orientation in which the 3D pointing device is held by a user.
    Type: Application
    Filed: August 8, 2008
    Publication date: November 27, 2008
    Applicant: Hillcrest Laboratories, Inc.
    Inventor: Matthew G. LIBERTY
  • 3D pointing devices with orientation compensation and improved usability
    Patent number: 7414611
    Abstract: Systems and methods according to the present invention describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the 3D pointing device) into a second frame of reference (e.g., a user's frame of reference). One exemplary embodiment of the present invention removes effects associated with a tilt orientation in which the 3D pointing device is held by a user.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: August 19, 2008
    Assignee: Hillcrest Laboratories, Inc.
    Inventor: Matthew G. Liberty
  • Methods and devices for indentifying users based on tremor
    Publication number: 20080158155
    Abstract: Systems and methods according to the present invention address these needs and others by providing a handheld device, e.g., a 3D pointing device, which uses hand tremor as an input. One or more sensors within the handheld device detect a user's hand tremor and identify the user based on the detected tremor.
    Type: Application
    Filed: June 21, 2007
    Publication date: July 3, 2008
    Applicant: Hillcrest Laboratories, Inc.
    Inventors: Matthew G. Liberty, Christopher D. Roller, Daniel S. Simpkins, Charles W.K. Gritton
  • 3D pointing devices and methods
    Publication number: 20080158154
    Abstract: Systems and methods according to the present invention address these needs and others by providing a handheld device, e.g., a 3D pointing device, which uses at least one sensor to detect motion of the handheld device. The detected motion can then be mapped into a desired output, e.g., cursor movement.
    Type: Application
    Filed: June 20, 2007
    Publication date: July 3, 2008
    Applicant: Hillcrest Laboratories, Inc.
    Inventors: Matthew G. Liberty, Daniel S. Simpkins, Charles W.K. Gritton, Mark Turner, Frank A. Hunleth
  • 3D pointing devices with orientation compensation and improved usability
    Patent number: 7262760
    Abstract: Systems and methods according to the present invention describe 3D pointing devices which enhance usability by transforming sensed motion data from a first frame of reference (e.g., the body of the 3D pointing device) into a second frame of reference (e.g., a user's frame of reference). One exemplary embodiment of the present invention removes effects associated with a tilt orientation in which the 3D pointing device is held by a user.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: August 28, 2007
    Assignee: Hillcrest Laboratories, Inc.
    Inventor: Matthew G. Liberty