Patents by Inventor Erik E. Anderson

Erik E. Anderson 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).

  • Publication number: 20250107876
    Abstract: Devices, systems and methods for estimating a position and an orientation of a dental tool are described. An example system for estimating a position and an orientation of a dental tool includes multiple electromagnets are removably affixed to an object positioned in a patient's mouth, the object being movable at least based on movements of the patient's mouth, and multiple magnetometers affixed to a dental tool that is non-stationary. The system further includes at least one processor configured to drive the plurality of electromagnets with at least one programmed signal, receive, from the plurality of magnetometers, magnetic field measurements, and determine, based on the magnetic field measurements, the position and the orientation of the dental tool relative to the object.
    Type: Application
    Filed: September 29, 2024
    Publication date: April 3, 2025
    Inventors: Erik E. ANDERSON, Nathan Charles ROYER, Benjamin KOKES, Jeffery DECH, Jon MAIARA
  • Patent number: 12196575
    Abstract: Devices and methods for automatic calibration of rate gyroscope bias are described. One example method includes receiving, while the device is in motion, a plurality of measurements from one or more sensors, including a gyroscope, in the device. In this example, the plurality of measurements is acquired over a time period. The method also includes identifying one or more time segments, within the time period, having a low motion activity of the device by comparing a computed value associated with a motion of the device to a predetermined threshold. The method further includes determining, based on one or more measurements acquired over the one or more time segments, a degree of motion metric for at least one of the one or more sensors, and determining, based on the degree of motion metric for the at least one of one or more sensors, an estimate of a bias of the gyroscope.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: January 14, 2025
    Assignee: CloudNav Inc.
    Inventors: Nathan Charles Royer, Erik E. Anderson
  • Publication number: 20240298950
    Abstract: Devices, systems and methods for monitoring of fetal health through determination of fetal heart rate are described. In an example, beat-to-beat decelerations and accelerations are monitored to estimate fetal position and orientation within the womb using magnetometer sensors. The described embodiments enable long-term monitoring that can be remote from a clinical setting, and is sufficiently portable to be operable while the mother engages in substantial motion during daily activity. An example method includes receiving, from a magnetic sensor, a combined heart signal comprising a mixture of a maternal heart signal and the fetal heart signal, estimating, based on the combined heart signal, one or more parameters associated with a location/motion of the magnetic sensor, generating a de-noised combined heart signal by performing a de-noising operation on the combined heart signal, and tracking, based on the de-noised combined heart signal, an estimate of the fetal heart signal.
    Type: Application
    Filed: March 6, 2024
    Publication date: September 12, 2024
    Inventors: Jeffery DECH, Erik E. ANDERSON, Ben KOKES
  • Patent number: 12070303
    Abstract: Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
    Type: Grant
    Filed: September 25, 2023
    Date of Patent: August 27, 2024
    Assignee: CloudNav Inc.
    Inventors: Erik E. Anderson, Jon D. Maiara
  • Publication number: 20240023823
    Abstract: Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 25, 2024
    Inventors: Erik E. Anderson, Jon D. Maiara
  • Patent number: 11766190
    Abstract: Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: September 26, 2023
    Assignee: CloudNav Inc.
    Inventors: Erik E. Anderson, Jon D. Maiara
  • Publication number: 20220244074
    Abstract: Devices and methods for automatic calibration of rate gyroscope bias are described. One example method includes receiving, while the device is in motion, a plurality of measurements from one or more sensors, including a gyroscope, in the device. In this example, the plurality of measurements is acquired over a time period. The method also includes identifying one or more time segments, within the time period, having a low motion activity of the device by comparing a computed value associated with a motion of the device to a predetermined threshold. The method further includes determining, based on one or more measurements acquired over the one or more time segments, a degree of motion metric for at least one of the one or more sensors, and determining, based on the degree of motion metric for the at least one of one or more sensors, an estimate of a bias of the gyroscope.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 4, 2022
    Inventors: Nathan Charles ROYER, Erik E. ANDERSON
  • Publication number: 20210386315
    Abstract: Methods, systems and devices for estimating the position and orientation of an invasive surgical devices, for example, a catheter guidewire or endoscope, surgical catheter, or self-guided electrophysiology catheter, relative to a reference frame, are described. An example system comprises one or more permanent magnets mounted on the surgical device, a plurality of magnetometer sensors at fixed location providing a reference frame that are configured to perform magnetic field measurements of the direct current superposition field of the permanent magnets, and computational means for receiving the input signals and calculating the position and orientation of the permanent magnets mounted on the surgical device.
    Type: Application
    Filed: June 11, 2021
    Publication date: December 16, 2021
    Inventors: Erik E. Anderson, Jon D. Maiara
  • Patent number: 8658269
    Abstract: A floor mat includes a perforated carpet and a thermoplastic rubber base. The base is formed around the perimeter of the carpet and through the carpet's perforations so that it integrates with the carpet and forms ribs and bosses adjacent the perforations, while leaving portions of the carpet exposed. The portions are left exposed by pinch-off ribbing within in the mold for forming the mat, which isolates the portions from the base.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: February 25, 2014
    Inventors: Timothy H. Parkes, Willard K. Rice, III, Erik E. Anderson
  • Patent number: 8175292
    Abstract: A method for processing and transducing audio signals. An audio system has a first audio signal and a second audio signal that have amplitudes. A method for processing the audio signals includes dividing the first audio signal into a first spectral band signal and a second spectral band signal; scaling the first spectral band signal by a first scaling factor proportional to the amplitude of the second audio signal; and scaling the first spectral band signal by a second scaling factor to create a second signal portion. Other portions of the disclosure include application of the signal processing method to multichannel audio systems, and to audio systems having different combinations of directional loudspeakers, full range loudspeakers, and limited range loudspeakers.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: May 8, 2012
    Inventors: J. Richard Aylward, Erik E. Anderson
  • Patent number: 7164768
    Abstract: A method for processing and transducing audio signals. An audio system has a first audio signal and a second audio signal that have amplitudes. A method for processing the audio signals includes dividing the first audio signal into a first spectral band signal and a second spectral band signal; scaling the first spectral band signal by a first scaling factor proportional to the amplitude of the second audio signal; and scaling the first spectral band signal by a second scaling factor to create a second signal portion. Other portions of the disclosure include application of the signal processing method to multichannel audio systems, and to audio systems having different combinations of directional loudspeakers, full range loudspeakers, and limited range loudspeakers.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: January 16, 2007
    Assignee: Bose Corporation
    Inventors: J. Richard Aylward, Erik E. Anderson
  • Publication number: 20030002693
    Abstract: A method for processing and transducing audio signals. An audio system has a first audio signal and a second audio signal that have amplitudes. A method for processing the audio signals includes dividing the first audio signal into a first spectral band signal and a second spectral band signal; scaling the first spectral band signal by a first scaling factor proportional to the amplitude of the second audio signal; and scaling the first spectral band signal by a second scaling factor to create a second signal portion. Other portions of the disclosure include application of the signal processing method to multichannel audio systems, and to audio systems having different combinations of directional loudspeakers, full range loudspeakers, and limited range loudspeakers.
    Type: Application
    Filed: June 21, 2001
    Publication date: January 2, 2003
    Inventors: J. Richard Aylward, Erik E. Anderson
  • Patent number: D662518
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: June 26, 2012
    Inventor: Erik E. Anderson
  • Patent number: D662519
    Type: Grant
    Filed: November 19, 2011
    Date of Patent: June 26, 2012
    Inventor: Erik E. Anderson
  • Patent number: D427984
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 11, 2000
    Assignee: NEC America, Inc.
    Inventors: Erik E. Anderson, Troy V. Frandsen, Raymond D. Heistand, II, Errol M. Tazbaz, Ida A. Gutierrez, Wesley B. Neibaur, Lyle J. Hedlund, Etsuro Kawasako