Patents by Inventor Fredrik Gustafsson
Fredrik Gustafsson 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: 20170180882Abstract: The application relates to a hearing device, e.g. a hearing aid, comprising a sensor part adapted for being located at or in an ear or for fully or partially for being implanted in the head of a user. The application further relates to a hearing system. The object of the present application is to provide an improved hearing device. The problem is solved in that the sensor part comprises an electrical potential sensor for sensing an electrical potential, and the hearing device further comprises electronic circuitry coupled to the electrical potential sensor to provide an amplified output. The invention may e.g. be used in binaural hearing aid systems to control the processing, e.g. using EarEOG.Type: ApplicationFiled: December 22, 2016Publication date: June 22, 2017Applicant: Oticon A/SInventors: Thomas LUNNER, Fredrik GUSTAFSSON
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Patent number: 9677888Abstract: A method and system are provided for improved pedestrian dead reckoning. In an embodiment, the crab angle of a device, i.e., the angle by which the device direction of travel differs from the device orientation, is determined via the processing of measurements from a vector accelerometer. The measured acceleration vector is rotated so that one component is vertical, and the crab angle is then found by determining a horizontal direction having the greatest energy. Correlations between the two horizontal acceleration components and the vertical acceleration component may be computed to determine the user's gait, further improving dead reckoning, e.g., for improving indoor position resolution.Type: GrantFiled: June 11, 2015Date of Patent: June 13, 2017Assignee: SENIONLAB ABInventors: David Tornqvist, Fredrik Gustafsson, Per Skoglar
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Publication number: 20160363448Abstract: A method and system are provided for improved pedestrian dead reckoning. In an embodiment, the crab angle of a device, i.e., the angle by which the device direction of travel differs from the device orientation, is determined via the processing of measurements from a vector accelerometer. The measured acceleration vector is rotated so that one component is vertical, and the crab angle is then found by determining a horizontal direction having the greatest energy. Correlations between the two horizontal acceleration components and the vertical acceleration component may be computed to determine the user's gait, further improving dead reckoning, e.g., for improving indoor position resolution.Type: ApplicationFiled: June 11, 2015Publication date: December 15, 2016Applicant: SENIONLAB ABInventors: David Tornqvist, Fredrik Gustafsson, Per Skoglar
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Patent number: 9432777Abstract: A hearing device is adapted to be arranged on or at least partly implanted in an individual's head and comprises: an input unit providing an input audio signal; a signal processing circuit adapted to process the input audio signal; an output unit adapted to provide an audible signal to the individual; one or more electrodes adapted to detect electric brain potentials of the individual; and a brainwave measurement circuit adapted to determine one or more EEG signals from electric signals received from the one or more electrodes. The hearing device further comprises: a first spectrum analyzer determining first audio spectra; a reconstructor adapted to repeatedly reconstruct second audio spectra; a first correlator to determine coherence between the first and the second audio spectra; and a control unit adapted to alter said processing in dependence on the coherence.Type: GrantFiled: October 8, 2013Date of Patent: August 30, 2016Assignee: OTICON A/SInventors: Thomas Lunner, Fredrik Gustafsson
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Patent number: 9222806Abstract: An encoder is configured for detection of rotational movement of a rotatable shaft in relation to a part of a machine, and a method is provided for generating a reference signal by an encoder.Type: GrantFiled: January 16, 2015Date of Patent: December 29, 2015Assignee: Leine & Linde ABInventors: Fredrik Gustafsson, Lars Peter Johan Kjellqvist
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Patent number: 9035647Abstract: An encoder is configured for detection of rotational movement of a rotatable shaft in relation to a part of a machine, and a method is provided for generating a reference signal by an encoder.Type: GrantFiled: March 14, 2013Date of Patent: May 19, 2015Assignee: LEINE & LINDE ABInventors: Fredrik Gustafsson, Lars Peter Johan Kjellqvist
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Publication number: 20150130512Abstract: An encoder is configured for detection of rotational movement of a rotatable shaft in relation to a part of a machine, and a method is provided for generating a reference signal by an encoder.Type: ApplicationFiled: January 16, 2015Publication date: May 14, 2015Inventors: Fredrik Gustafsson, Lars Peter Johan Kjellqvist
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Patent number: 9020752Abstract: The present invention relates to a method for positioning a user inside a building, wherein the user has a user carried device and the device is provided with a direction sensor and a movement sensor. The method includes providing the user carried device with a vector map of the building, wherein the vector map includes vectors and nodes representing possible movement paths for the user in the building; determining a starting point in the vector map, receiving movement information from the movement sensor, receiving direction information from the direction sensor, receiving a magnetic field map at the user carried device, wherein the magnetic field is detectable by the user carried device, and estimating a new position of the user based on the vector map, the movement information, the direction information and the property map.Type: GrantFiled: July 23, 2013Date of Patent: April 28, 2015Assignee: SenionLab ABInventors: Christian Lundquist, Per Skoglar, Fredrik Gustafsson
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Patent number: 8934884Abstract: The present invention relates to a system and method for managing energy consumption in a multi-sensor user-carried device during indoor navigation. In an embodiment of the invention, the device calculates a motion mode, a location mode, or an operational mode, each of which is used to modify sensor behavior, e.g., sampling rate, and/or CPU load, e.g., filtering and modeling complexity. The motion mode describes the manner in which the user is moving (standing still, walking, passive transport for example), the location mode describes a feature of the user's location (near level change or intersection for example), and the operational mode describes the manner in which the user is interacting with the device (holding and monitoring, holding and not monitoring, not holding for example).Type: GrantFiled: September 21, 2012Date of Patent: January 13, 2015Assignee: SenionLab ABInventors: Fredrik Gustafsson, Christian Lundquist, David Tornqvist, Per Skoglar, Jonas Callmer
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Publication number: 20140098981Abstract: A hearing device is adapted to be arranged on or at least partly implanted in an individual's head and comprises: an input unit providing an input audio signal; a signal processing circuit adapted to process the input audio signal; an output unit adapted to provide an audible signal to the individual; one or more electrodes adapted to detect electric brain potentials of the individual; and a brainwave measurement circuit adapted to determine one or more EEG signals from electric signals received from the one or more electrodes. The hearing device further comprises: a first spectrum analyser determining first audio spectra; a reconstructor adapted to repeatedly reconstruct second audio spectra; a first correlator to determine coherence between the first and the second audio spectra; and a control unit adapted to alter said processing in dependence on the coherence.Type: ApplicationFiled: October 8, 2013Publication date: April 10, 2014Applicant: OTICON A/SInventors: Thomas LUNNER, Fredrik GUSTAFSSON
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Publication number: 20140087707Abstract: The present invention relates to a system and method for managing energy consumption in a multi-sensor user-carried device during indoor navigation. In an embodiment of the invention, the device calculates a motion mode, a location mode, or an operational mode, each of which is used to modify sensor behavior, e.g., sampling rate, and/or CPU load, e.g., filtering and modeling complexity. The motion mode describes the manner in which the user is moving (standing still, walking, passive transport for example), the location mode describes a feature of the user's location (near level change or intersection for example), and the operational mode describes the manner in which the user is interacting with the device (holding and monitoring, holding and not monitoring, not holding for example).Type: ApplicationFiled: September 21, 2012Publication date: March 27, 2014Inventors: Fredrik Gustafsson, Christian Lundquist, David Tornqvist, Per Skoglar, Jonas Callmer
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Patent number: 8459117Abstract: A method and an encoder are adapted to determine one or more parameters, each parameter being related to a type of vibration for the encoder. The encoder is mounted on an axis and arranged to detect rotary movement of the axis.Type: GrantFiled: April 11, 2011Date of Patent: June 11, 2013Assignee: Leine & Linde ABInventor: Fredrik Gustafsson
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Publication number: 20130124139Abstract: A method is disclosed that includes receiving one or more first localization related measures for a user equipment node at a first localization measurement time, and receiving at least one or more second localization related measures for the user equipment node at a second localization measurement time. The localization related measurements are included in a trace of localization related measurements for the user equipment node from the first localization measurement time to the second localization measurement time. A location for the user equipment at a single time instant in a time interval between the first localization measurement time and the second localization measurement time is estimated from the trace.Type: ApplicationFiled: September 10, 2012Publication date: May 16, 2013Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Fredrik GUNNARSSON, Fredrik GUSTAFSSON
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Publication number: 20120203453Abstract: The present invention relates to a method for positioning a user inside a building, wherein the user has a user carried device (100) and the user carried device (100) is provided with a direction sensor (110) and a movement sensor (110). The method comprises the steps of providing the user carried device with a vector map (220) of the building, wherein the vector map (220) comprises vectors and nodes representing possible movement paths for the user in the building; determining a starting point in the vector map representing a first position of the user; receiving movement information from the movement sensor (110) regarding movement of the user in the building; receiving direction information from the direction sensor (110) regarding the direction of the movement of the user; and estimating a new position of the user based on the vector map, the movement information and the direction information.Type: ApplicationFiled: February 9, 2011Publication date: August 9, 2012Applicant: SenionLab ABInventors: Christian Lundquist, Per Skoglar, Fredrik Gustafsson, David Törnqvist, Jonas Callmer
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Publication number: 20110247415Abstract: A method and an encoder are adapted to determine one or more parameters, each parameter being related to a type of vibration for the encoder. The encoder is mounted on an axis and arranged to detect rotary movement of the axis.Type: ApplicationFiled: April 11, 2011Publication date: October 13, 2011Inventor: Fredrik Gustafsson
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Patent number: 7887490Abstract: The invention relates to a method and a device for removing respiratory artefacts in invasive blood pressure measurements. The level of CO2 in the expired air is monitored during blood pressure measurement and used to approximate and remove the respiratory artifacts. In one embodiment, the respiratory frequency from the respiratory signal is extracted by identifying the end-tidal CO2 level for each breath. A model is derived for the respiratory artifacts using the respiratory frequency, and the model is subtracted from the measured blood pressure data.Type: GrantFiled: September 28, 2006Date of Patent: February 15, 2011Assignee: Siemens AktiengesellscahftInventors: Kenneth Danehorn, Fredrik Gustafsson, Martin Wikström
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Patent number: 7641615Abstract: The invention relates to a method for removing oscillatory artefacts caused by pressure waves in a fluid-filled trans-luminal catheter from invasive blood pressure measurement data, including the steps of setting up a model for the measurement data, fitting the model to the measurement data, identifying the model components, representing the oscillatory artefact, and removing the oscillatory artefact from the measurement data. The invention also relates to a respective device for acquiring and correcting invasive blood pressure measurement data.Type: GrantFiled: September 29, 2006Date of Patent: January 5, 2010Assignee: Siemens AktiengesellschaftInventors: Kenneth Danehorn, Fredrik Gustafsson, Johan Wallin
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Patent number: 7572972Abstract: The invention describes an apparatus for software or hardware emulation of acoustic feedback effects. The invention comprises an analog to digital interface (200) for the input, whose output is summed (202) with a feedback of this digital signal passing through an amplifier model (204), a room acoustics model (206) and a string model (210). The summed signal (202) is converted from digital to analog (205) and can then be connected to a standard amplifier. The room acoustic model comprises a volume control (208) where the degree of feedback is controlled, while the string model contains a model (212) of which harmonics to feed back, and finally an algorithm (214) that decides which fundamental frequencies that the incoming digital signal contains.Type: GrantFiled: November 16, 2005Date of Patent: August 11, 2009Assignee: Softube ABInventor: Fredrik Gustafsson
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Publication number: 20080091393Abstract: The invention describes an apparatus for software or hardware emulation of acoustic feedback effects. The invention comprises an analog to digital interface (200) for the input, whose output is summed (202) with a feedback of this digital signal passing through an amplifier model (204), a room acoustics model (206) and a string model (210). The summed signal (202) is converted from digital to analog (205) and can then be connected to a standard amplifier. The room acoustic model comprises a volume control (208) where the degree of feedback is controlled, while the string model contains a model (212) of which harmonics to feed back, and finally an algorithm (214) that decides which fundamental frequencies that the incoming digital signal contains.Type: ApplicationFiled: November 16, 2005Publication date: April 17, 2008Inventor: Fredrik Gustafsson
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Patent number: 7240542Abstract: A method, computer program product and apparatus for estimating the pneumatic pressure of a tire on a vehicle, comprising the steps of: receiving as an input a vehicle status sensor signal; estimating first parameter values of an adaptive filter based on a predetermined model on the vehicle status dependent on the vehicle status sensor signal; calculating, dependent on said first model parameter values, a first tire pressure indication value (?) being dependent on and indicative of the pneumatic pressure of the tire. Specifically, the vehicle status signal may be an input a wheel angular velocity signal (1) and a lateral movement indication signal; the adaptive filter is based on a predetermined model on lateral vehicle dynamics dependent on the angular velocity of said wheel and the lateral movement of said vehicle.Type: GrantFiled: April 12, 2001Date of Patent: July 10, 2007Inventors: Fredrik Gustafsson, Marcus Drevö, Niclas Persson