Patents by Inventor Eric C. Larson
Eric C. Larson 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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Patent number: 11493371Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: GrantFiled: February 27, 2018Date of Patent: November 8, 2022Assignee: University of WashingtonInventors: Shwetak N. Patel, James A. Fogarty, Jon E. Froehlich, Eric C. Larson
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Patent number: 11397083Abstract: Gyroscope data can be used to generate upsampled signal. Multiple mobile devices are spaced apart from each other in a spatial arrangement. Each mobile device includes a gyroscope sensor to detect mechanical vibrations caused by signals originating within a vicinity of a mobile device that includes the gyroscope sensor. Each mobile device includes one or more respective processors to receive representations of the mechanical vibrations sensed by the gyroscope sensor at a sampling frequency, and transmit the representations received at the sampling frequency as a respective vibration signal associated with sampling times. The signal processor is coupled to the multiple mobile devices. The signal processor generates a processed upsampled signal by interleaving the vibration signal received from each mobile device and processing the interleaved signal using one or more machine learning filters, and transmitting the processed upsampled signal.Type: GrantFiled: December 3, 2019Date of Patent: July 26, 2022Assignee: IRONWOOD CYBER INC.Inventors: Eric C. Larson, Mitchell Thornton, Ian Johnson, Travis Siems, Erik Gabrielsen
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Patent number: 10285624Abstract: Systems, methods, and devices are provided for estimating bilirubin levels. In one aspect, a method for estimating the level of bilirubin in a patient includes receiving image data for at least one image including a region of the patient's skin and a color calibration target. Color-balanced image data for the skin region is generated based on a subset of the image data corresponding to the color calibration target and the skin region. The bilirubin level in the patient is estimated based on the color-balanced image data for the skin region.Type: GrantFiled: August 25, 2015Date of Patent: May 14, 2019Assignee: University of WashingtonInventors: James A. Taylor, Shwetak N. Patel, James W. Stout, Lilian De Greef, Mayank Goel, Eric C. Larson
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Patent number: 10028675Abstract: Devices, system, and methods generate expiratory flow-based pulmonary function data by processing a digital audio file of sound of a subject's forced expiratory maneuver. A mobile device configured to generate expiratory flow-based pulmonary function data includes a microphone, a processor, and a data storage device. The microphone is operable to convert sound of the subject's forced expiratory maneuver into a digital data file. The processor is operatively coupled with the microphone. The data storage device is operatively coupled with the processor and stores instructions that, when executed by the processor, cause the processor to process the digital data file to generate expiratory flow-based pulmonary function data for assessing pulmonary function of the subject. The sound of the subject's forced expiratory maneuver can be converted into the digital data file without contact between the subject's mouth and the mobile device.Type: GrantFiled: May 10, 2013Date of Patent: July 24, 2018Assignee: University Of Washington Through Its Center For CommercializationInventors: Shwetak N Patel, Mayank Goel, Eric C. Larson
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Publication number: 20180188085Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: ApplicationFiled: February 27, 2018Publication date: July 5, 2018Inventors: Shwetak N. PATEL, James A. FOGARTY, Jon E. FROEHLICH, Eric C. LARSON
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Patent number: 9939299Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: GrantFiled: January 29, 2016Date of Patent: April 10, 2018Assignee: UNIVERSITY OF WASHINGTONInventors: Shwetak N. Patel, James A. Fogarty, Jon E. Froehlich, Eric C. Larson
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Patent number: 9702123Abstract: Examples of automatic valve shutoff systems are described which may include an actuation device including an actuator and a valve attachment portion. The valve attachment portion may be configured for attachment with an existing valve in a fluid or compressible gas supply line. The system may further include a controller coupled to the actuation device, wherein the controller is configured to initiate a valve shutoff process in response to a wireless signal. Wake-up circuitry may be coupled to the controller and configured to monitor the supply line for vibrations and activate the controller in response to the vibrations.Type: GrantFiled: September 10, 2015Date of Patent: July 11, 2017Assignee: University of Washington Through Its Center For CommercializationInventors: Shwetak N. Patel, Timothy B. Campbell, Eric C. Larson, Gabriel A. Cohn
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Publication number: 20160146648Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: ApplicationFiled: January 29, 2016Publication date: May 26, 2016Inventors: Shwetak N. Patel, James A. Fogarty, Jon E. Froehlich, Eric C. Larson
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Patent number: 9250105Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: GrantFiled: May 7, 2013Date of Patent: February 2, 2016Assignee: University of WashingtonInventors: Shwetak N. Patel, James A. Fogarty, Jon E. Froehlich, Eric C. Larson
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Publication number: 20150376875Abstract: Examples of automatic valve shutoff systems are described which may include an actuation device including an actuator and a valve attachment portion. The valve attachment portion may be configured for attachment with an existing valve the in a fluid or compressible gas supply line. The system may further include a controller coupled to the actuation device, wherein the controller is configured to initiate a valve shutoff process in response to a wireless signal. Wake-up circuitry may be coupled to the controller and configured to monitor the supply line for vibrations and activate the controller in response to the vibrations.Type: ApplicationFiled: September 10, 2015Publication date: December 31, 2015Inventors: Shwetak N. Patel, Timothy B. Campbell, Eric C. Larson, Gabriel A. Cohn
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Publication number: 20150359459Abstract: Systems, methods, and devices are provided for estimating bilirubin levels. In one aspect, a method for estimating the level of bilirubin in a patient includes receiving image data for at least one image including a region of the patient's skin and a color calibration target. Color-balanced image data for the skin region is generated based on a subset of the image data corresponding to the color calibration target and the skin region. The bilirubin level in the patient is estimated based on the color-balanced image data for the skin region.Type: ApplicationFiled: August 25, 2015Publication date: December 17, 2015Inventors: James A. Taylor, Shwetak N. Patel, James W. Stout, Lilian De Greef, Mayank Goel, Eric C. Larson
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Patent number: 9151022Abstract: Examples of automatic valve shutoff systems are described which may include an actuation device including an actuator and a valve attachment portion. The valve attachment portion may be configured for attachment with an existing valve in a fluid or compressible gas supply line. The system may further include a controller coupled to the actuation device, wherein the controller is configured to initiate a valve shutoff process in response to a wireless signal. Wake-up circuitry may be coupled to the controller and configured to monitor the supply line for vibrations and activate the controller in response to the vibrations.Type: GrantFiled: January 11, 2013Date of Patent: October 6, 2015Assignee: University of Washington Through Its Center for CommercializationInventors: Shwetak N. Patel, Timothy B. Campbell, Eric C. Larson, Gabriel A. Cohn
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Publication number: 20150126888Abstract: Devices, system, and methods generate expiratory flow-based pulmonary function data by processing a digital audio file of sound of a subject's forced expiratory maneuver. A mobile device configured to generate expiratory flow-based pulmonary function data includes a microphone, a processor, and a data storage device. The microphone is operable to convert sound of the subject's forced expiratory maneuver into a digital data file. The processor is operatively coupled with the microphone. The data storage device is operatively coupled with the processor and stores instructions that, when executed by the processor, cause the processor to process the digital data file to generate expiratory flow-based pulmonary function data for assessing pulmonary function of the subject. The sound of the subject's forced expiratory maneuver can be converted into the digital data file without contact between the subject's mouth and the mobile device.Type: ApplicationFiled: May 10, 2013Publication date: May 7, 2015Inventors: Shwetak N Patel, Mayank Goel, Eric C. Larson
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Publication number: 20150013772Abstract: Examples of automatic valve shutoff systems are described which may include an actuation device including an actuator and a valve attachment portion. The valve attachment portion may be configured for attachment with an existing valve in a fluid or compressible gas supply line. The system may further include a controller coupled to the actuation device, wherein the controller is configured to initiate a valve shutoff process in response to a wireless signal. Wake-up circuitry may be coupled to the controller and configured to monitor the supply line for vibrations and activate the controller in response to the vibrations.Type: ApplicationFiled: January 11, 2013Publication date: January 15, 2015Inventors: Shwetak N. Patel, Tmothy B. Campbell, Eric C. Larson, Gabriel A. Cohn
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Patent number: 8457908Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: GrantFiled: June 11, 2009Date of Patent: June 4, 2013Assignee: University of WashingtonInventors: Shwetak N. Patel, James A. Fogarty, Jon E. Froehlich, Eric C. Larson
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Publication number: 20100313958Abstract: By monitoring pressure transients in a liquid within a liquid distribution system using only a single sensor, events such as the opening and closing of valves at specific fixtures are readily detected. The sensor, which can readily be coupled to a faucet bib, transmits an output signal to a computing device. Each such event can be identified by the device based by comparing characteristic features of the pressure transient waveform with previously observed characteristic features for events in the system. These characteristic features, which can include the varying pressure, derivative, and real Cepstrum of the pressure transient waveform, can be used to select a specific fixture where a valve open or close event has occurred. Flow to each fixture and leaks in the system can also be determined from the pressure transient signal. A second sensor disposed at a point disparate from the first sensor provides further event information.Type: ApplicationFiled: June 11, 2009Publication date: December 16, 2010Applicant: University of WashingtonInventors: Shwetak N. Patel, James A. Fogarty, Jon E. Froehlich, Eric C. Larson