Patents by Inventor John Bateman
John Bateman 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: 20250255487Abstract: A dentine-enamel boundary detection system for an oral inspection device is provided. The dentine-enamel boundary detection system includes a light emission module configured to emit light to irradiate an oral region of interest and two optical filters having different respective passbands. Each of the two optical filters are arranged to filter a portion of fluorescence emitted from oral structures in the oral region of interest to pass filtered fluorescence. The system further includes a sensor module and a processor module. The sensor module is configured to detect the filtered fluorescence and output corresponding sensor data. The processor module configured to identify the presence of a dentine-enamel boundary in the oral region of interest by processing the sensor data output by the sensor module.Type: ApplicationFiled: April 25, 2023Publication date: August 14, 2025Inventors: Michele BENETTI, Bartosz SLAK, Christopher John BATEMAN
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Publication number: 20250067554Abstract: A self-mixing interferometer configured to monitor particulate material within a monitored region of space comprising a laser cavity assembly (1A) and an optical assembly (1B) configured to bathe the monitored region with laser light of the interferometer. A laser monitoring unit (1C) is configured to acquire an interferometric signal generated by the interferometer in response to light returned to the laser cavity assembly from said wavefronts by said particulate material. A processing module (1D) is configured to determine a property of the particulate material within the monitored region according to a wavelet transformation of the interferometric signal at least a part of which comprises a waveform of changing frequency.Type: ApplicationFiled: December 7, 2022Publication date: February 27, 2025Inventors: David James GRAHAM, Michele BENETTI, Sanjeeb TRIPATHY, Christopher John BATEMAN, Alexander Michael KEMBER
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Publication number: 20250060297Abstract: A self-mixing interferometer configured to monitor particulate material within a monitored region of space comprising a laser cavity assembly (1A) and an optical assembly (1B) configured to bathe the monitored region with laser light of the interferometer possessing wavefronts having different directions at different respective locations within the monitored region. A laser monitoring unit (1C) is configured to acquire an interferometric signal generated by the interferometer in response to light returned to the laser cavity assembly from said wavefronts by said particulate material. A processing module (1D) is configured to determine a property of the particulate material within the monitored region according to changes in the frequency of a waveform within at least a part of the interferometric signal.Type: ApplicationFiled: December 7, 2022Publication date: February 20, 2025Inventors: David James GRAHAM, Michele BENETTI, Sanjeeb TRIPATHY, Christopher John BATEMAN, Alexander Michael KEMBER
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Publication number: 20250049195Abstract: The present disclosure relates to haircare appliances. In particular, the present disclosure relates to a haircare appliance arranged for detecting a hair moisture content. Accordingly, there is provided a haircare appliance, comprising a processing element, at least one light emitting element emitting at least two wavelengths, and a sensor element, wherein the light emitting element is adapted to irradiate a portion of hair to be treated, wherein the sensor element is adapted to receive a sensor reading from an acquisition region of the irradiated hair and generate a sensor signal dependent on the sensor reading, wherein the sensor element is a spectral sensor element, and wherein the processing element is adapted to determine a moisture content of at least the irradiated portion of the hair from the sensor signal.Type: ApplicationFiled: December 13, 2022Publication date: February 13, 2025Inventors: Bartosz SLAK, Michele BENETTI, Christopher John BATEMAN
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Publication number: 20250052663Abstract: A self-mixing interferometer configured to monitor particulate material within a monitored region of space comprising a laser cavity assembly (1A) and an optical assembly (1B) configured to bathe the monitored region with laser light of the interferometer. A laser monitoring unit (1C) is configured to acquire an interferometric signal generated by the interferometer in response to light returned to the laser cavity assembly from said wavefronts by said particulate material. A processing module (1D) is configured to determine a property of the particulate material within the monitored region according to a structure in data describing the interferometric signal in a frequency-space transformation thereof wherein at least a part of the interferometric signal comprises a waveform of changing frequency.Type: ApplicationFiled: December 7, 2022Publication date: February 13, 2025Inventors: David James GRAHAM, Michele BENETTI, Sanjeeb TRIPATHY, Christopher John BATEMAN, Alexander Michael KEMBER
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Publication number: 20250049191Abstract: A haircare appliance is provided for detecting a hair moisture content. The haircare appliance includes a processing element, at least one light emitting element emitting at least two wavelengths, and a sensor element, wherein the light emitting element is adapted to irradiate a portion of hair to be treated. The sensor element is adapted to receive a sensor reading from an acquisition region of the irradiated hair and generate a sensor signal dependent on the sensor reading, and includes a spectral sensor element. The processing element is adapted to determine a moisture content of at least the irradiated portion of the hair from the sensor signal.Type: ApplicationFiled: December 13, 2022Publication date: February 13, 2025Inventors: Bartosz SLAK, Christopher John BATEMAN, Michele BENETTI
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Publication number: 20240090728Abstract: A vacuum cleaner with a battery unit for powering the vacuum cleaner is provided. The battery unit includes a plurality of serially connected battery cells and battery management electronics operatively coupled to the battery cells. Two enclosures are provided on either side of a central axis of the vacuum cleaner, each enclosure including a portion of the plurality of battery cells, and a portion of the battery management electronics operatively coupled to the respective portion of the plurality of the battery cells. A link strap interconnects the portions of the battery management electronics.Type: ApplicationFiled: December 14, 2021Publication date: March 21, 2024Applicant: Dyson Technology LimitedInventors: Edward Richard OLDFIELD, Peter James NEWELL, Christopher John BATEMAN, Sergio MINGUELA SANCHEZ
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Publication number: 20240041571Abstract: An oral treatment device includes image sensor equipment configured to generate image data indicative of a sequence of images representing at least a portion of an oral cavity of a user. The oral treatment device includes a controller configured to process the image data to determine a movement parameter indicative of movement of the oral treatment device relative to an interproximal gap between adjacent teeth in the oral cavity of the user. The controller is configured to control the oral treatment device to perform an action based on the determined movement parameter.Type: ApplicationFiled: October 25, 2021Publication date: February 8, 2024Applicant: Dyson Technology LimitedInventors: Lili TAO, Christopher John BATEMAN, Ehsan NADERNEJAD, Miltiadis Alexios PAPADOPOULOS
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Publication number: 20230387838Abstract: A method of controlling a brushless permanent-magnet motor having a phase winding and a rotor includes monitoring a value indicative of back EMF induced in the phase winding during oscillation of the rotor about a parking position, and using amplitude peaks of the value indicative of back EMF to calculate a time window in which to apply a drive voltage to the phase winding. The method includes setting a timer corresponding to the time window at a subsequent determined amplitude peak and applying a drive voltage to the phase winding during the time window.Type: ApplicationFiled: September 29, 2021Publication date: November 30, 2023Applicant: Dyson Technology LimitedInventors: George Francis Paul OAKHAM, Christopher John BATEMAN
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Patent number: 10205914Abstract: Systems and methods for streaming video and/or audio from wireless cameras are provided. Methods may include, at a network camera, receiving an instruction to begin video capture from a first network node, including information identifying a second network node. A first video stream may be sent from the network camera to the first network node, and a second video stream may be simultaneously sent to the second network node. The first and second video streams may be based on common video capture data, and may be sent at different bitrates, different resolutions, different frame-rates, and/or different formats. A parameter of the second video stream may be adjusted in response to performance data received from the second network node or another network node.Type: GrantFiled: October 31, 2017Date of Patent: February 12, 2019Assignee: Logitech Europe S.A.Inventors: John Bateman, Oleg Ostap, Oliver Hoheisel, David Kim, Vijay Karnataki
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Patent number: 10110855Abstract: Systems and methods for connecting wireless cameras are provided. A computing device may include a network interface, and a processor configured to establish a virtual USB bus available to an operating system of the computing device, establish a virtual USB camera device, and report to the operating system that the virtual USB camera device is connected to the virtual USB bus. The virtual USB camera may be configured to establish a network connection to a network camera using the network interface, receive video data from the network camera via the network interface, and send the video data via the virtual USB bus. Alternatively, the virtual USB camera may send the video data to the operating system as USB packets, without establishing a virtual USB bus.Type: GrantFiled: August 6, 2013Date of Patent: October 23, 2018Assignee: Logitech Europe S.A.Inventors: John Bateman, Ken Erbes, Michael Cheng, Vijay Karnataki, Oleg Ostap, Oliver Hoheisel, David Kim
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Publication number: 20180098035Abstract: Systems and methods for streaming video and/or audio from wireless cameras are provided. Methods may include, at a network camera, receiving an instruction to begin video capture from a first network node, including information identifying a second network node. A first video stream may be sent from the network camera to the first network node, and a second video stream may be simultaneously sent to the second network node. The first and second video streams may be based on common video capture data, and may be sent at different bitrates, different resolutions, different frame-rates, and/or different formats. A parameter of the second video stream may be adjusted in response to performance data received from the second network node or another network node.Type: ApplicationFiled: October 31, 2017Publication date: April 5, 2018Inventors: John Bateman, Oleg Ostap, Oliver Hoheisel, David Kim, Vijay Karnataki
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Patent number: 9888214Abstract: Systems and methods for streaming video and/or audio from multiple devices are provided. A camera may include an optical sensor, a wireless communication device, and a processor configured to establish a first connection with a remote location, establish a second connection with one or more other cameras, and stream video from the cameras to the remote location. The remote location may be, for example, a remote website, a remote server, or a remote client device. The camera may be further configured to provide control signals to the other cameras, such as for controlling applications running on the other cameras.Type: GrantFiled: August 6, 2013Date of Patent: February 6, 2018Assignee: Logitech Europe S.A.Inventors: John Bateman, Oleg Ostap, Oliver Hoheisel, David Kim, Vijay Karnataki
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Patent number: 9838651Abstract: Systems and methods for streaming video and/or audio from wireless cameras are provided. Methods may include, at a network camera, receiving an instruction to begin video capture from a first network node, including information identifying a second network node. A first video stream may be sent from the network camera to the first network node, and a second video stream may be simultaneously sent to the second network node. The first and second video streams may be based on common video capture data, and may be sent at different bitrates, different resolutions, different frame-rates, and/or different formats. A parameter of the second video stream may be adjusted in response to performance data received from the second network node or another network node.Type: GrantFiled: August 6, 2013Date of Patent: December 5, 2017Assignee: Logitech Europe S.A.Inventors: John Bateman, Oleg Ostap, Oliver Hoheisel, David Kim, Vijay Karnataki
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Publication number: 20170170758Abstract: A method of determining the parked position of a rotor of a permanent-magnet motor, including applying a first voltage to a phase winding of the motor, measuring a first parameter, removing the first voltage, waiting for current in the phase winding to decrease to zero, applying a second voltage having the opposite polarity, measuring a second parameter, comparing the first parameter and the second parameter, and determining that the rotor is in a first parked position if the first parameter is less than the second parameter, and that the rotor is in a second parked position if the first parameter is greater than the second parameter. The first parameter and the second parameter each correspond to one of (i) the time taken for current in the phase winding to exceed a threshold, and (ii) the magnitude of current in the phase winding at the end of a time interval.Type: ApplicationFiled: December 12, 2016Publication date: June 15, 2017Applicant: Dyson Technology LimitedInventors: Christopher John BATEMAN, Libo ZHENG
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Patent number: 9515588Abstract: A method of controlling a brushless permanent-magnet motor. The method includes generating a first signal having a voltage that is proportional to a voltage across a winding of the motor, and generating a second signal having a voltage that is proportional to a current in the winding. The second signal is then differentiated to generate a third signal, and the voltages of the first signal and the third signal are compared. An output signal is generated in response to the comparison, the output signal having an edge whenever the voltages of the first signal and the third signal correspond. The winding is then commutated at times relative to the edges in the output signal. Additionally, a control system that implements the method, and a motor system that incorporates the control system.Type: GrantFiled: March 5, 2013Date of Patent: December 6, 2016Assignee: DYSON TECHNOLOGY LIMITEDInventors: Christopher John Bateman, Barrie Charles Mecrow
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Publication number: 20160139142Abstract: The present invention relates to methods of diagnosing, monitoring, and assessing treatment effects for neurological and neurodegenerative diseases and disorders, such as Alzheimer's Disease, early in the course of clinical disease or prior to the onset of brain damage and clinical symptoms. Methods of measuring the in vivo metabolism of biomolecules produced in the CNS in a subject are provided.Type: ApplicationFiled: November 18, 2015Publication date: May 19, 2016Inventors: Randall John Bateman, David Michael Holtzman
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Patent number: 9088235Abstract: A method of determining the position of a rotor of a permanent-magnet motor. The method includes sequentially exciting and freewheeling a winding of the motor. The winding is freewheeled for a freewheel period in response to current in the winding exceeding a current limit. The method also includes measuring a parameter that corresponds to either the magnitude of current in the winding at the end of the freewheel period or the interval between the start or end of the freewheel period and the time at which current in the winding exceeds the current limit. The measured parameter is then compared against a threshold and the rotor is determined to be at a predetermined position when the measured parameter is less than or greater than the threshold.Type: GrantFiled: March 5, 2013Date of Patent: July 21, 2015Assignee: Dyson Technology LimitedInventor: Christopher John Bateman
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Patent number: 9088238Abstract: A method of determining the position of a rotor of a permanent-magnet motor. The method uses two different schemes to determine the position of the rotor. A first scheme is used when the rotor rotates within a first speed range, by sequentially exciting and freewheeling a winding of the motor, measuring a parameter that depends on the rate of change of current in the winding, and comparing the parameter against a threshold. A second scheme is used when the rotor rotates within a second speed range, by generating a voltage signal that is proportional to the voltage across the winding, generating a further voltage signal that depends on the rate of change of current in the winding, and comparing the two signals.Type: GrantFiled: March 5, 2013Date of Patent: July 21, 2015Assignee: Dyson Technology LimitedInventor: Christopher John Bateman
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Publication number: 20140199718Abstract: The present invention relates to methods of diagnosing, monitoring, and assessing treatment effects for neurological and neurodegenerative diseases and disorders, such as Alzheimer's Disease, early in the course of clinical disease or prior to the onset of brain damage and clinical symptoms. Methods of measuring the in vivo metabolism of biomolecules produced in the CNS in a subject are provided.Type: ApplicationFiled: March 25, 2014Publication date: July 17, 2014Applicant: The Washington UniversityInventors: Randall John Bateman, David Michael Holtzman