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).
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Publication number: 20250107876Abstract: 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: ApplicationFiled: September 29, 2024Publication date: April 3, 2025Inventors: Erik E. ANDERSON, Nathan Charles ROYER, Benjamin KOKES, Jeffery DECH, Jon MAIARA
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Patent number: 12196575Abstract: 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: GrantFiled: January 28, 2022Date of Patent: January 14, 2025Assignee: CloudNav Inc.Inventors: Nathan Charles Royer, Erik E. Anderson
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Publication number: 20240298950Abstract: 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: ApplicationFiled: March 6, 2024Publication date: September 12, 2024Inventors: Jeffery DECH, Erik E. ANDERSON, Ben KOKES
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Patent number: 12070303Abstract: 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: GrantFiled: September 25, 2023Date of Patent: August 27, 2024Assignee: CloudNav Inc.Inventors: Erik E. Anderson, Jon D. Maiara
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Publication number: 20240023823Abstract: 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: ApplicationFiled: September 25, 2023Publication date: January 25, 2024Inventors: Erik E. Anderson, Jon D. Maiara
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Patent number: 11766190Abstract: 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: GrantFiled: June 11, 2021Date of Patent: September 26, 2023Assignee: CloudNav Inc.Inventors: Erik E. Anderson, Jon D. Maiara
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Publication number: 20220244074Abstract: 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: ApplicationFiled: January 28, 2022Publication date: August 4, 2022Inventors: Nathan Charles ROYER, Erik E. ANDERSON
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Publication number: 20210386315Abstract: 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: ApplicationFiled: June 11, 2021Publication date: December 16, 2021Inventors: Erik E. Anderson, Jon D. Maiara
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Patent number: 8658269Abstract: 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: GrantFiled: January 29, 2013Date of Patent: February 25, 2014Inventors: Timothy H. Parkes, Willard K. Rice, III, Erik E. Anderson
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Patent number: 8175292Abstract: 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: GrantFiled: August 10, 2006Date of Patent: May 8, 2012Inventors: J. Richard Aylward, Erik E. Anderson
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Patent number: 7164768Abstract: 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: GrantFiled: June 21, 2001Date of Patent: January 16, 2007Assignee: Bose CorporationInventors: J. Richard Aylward, Erik E. Anderson
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Publication number: 20030002693Abstract: 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: ApplicationFiled: June 21, 2001Publication date: January 2, 2003Inventors: J. Richard Aylward, Erik E. Anderson
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Patent number: D662518Type: GrantFiled: October 26, 2011Date of Patent: June 26, 2012Inventor: Erik E. Anderson
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Patent number: D662519Type: GrantFiled: November 19, 2011Date of Patent: June 26, 2012Inventor: Erik E. Anderson
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Patent number: D427984Type: GrantFiled: November 23, 1999Date of Patent: July 11, 2000Assignee: 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