Patents by Inventor Uwe Wiedmann

Uwe Wiedmann 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: 20220245482
    Abstract: The present approach relates to generating one or both of a failure prediction indication for an X-ray tube or a remaining useful life estimate for the X-ray tube. In one implementation, a complexity of a regression model is selected based on the operating points utilized by an imaging system for the X-ray tube, where the regression model estimates coefficients utilized by a static tube model in estimating health (e.g., thickness) of the electron emitter of the X-ray tube, which in turn may be used in predicting remaining useful life of an electron emitter of the X-ray tube. In another implementation, replacement of an X-ray tube or a component of a filament drive circuit coupled to the X-ray tube may be detected.
    Type: Application
    Filed: February 2, 2021
    Publication date: August 4, 2022
    Inventors: Munish Vishwas Inamdar, Kiran Panchal, Rui Xu, Uwe Wiedmann
  • Patent number: 11389124
    Abstract: The present disclosure relates to fabrication and use of a phase-contrast imaging detector that includes sub-pixel resolution electrodes or photodiodes spaced to correspond to a phase-contrast interference pattern. A system using such a detector may employ fewer gratings than are typically used in a phase-contrast imaging system, with certain functionality typically provided by a detector-side analyzer grating being performed by sub-pixel resolution structures (e.g., electrodes or photodiodes) of the detector. Measurements acquired using the detector may be used to determine offset, amplitude, and phase of a phase-contrast interference pattern without multiple acquisitions at different phase steps.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: July 19, 2022
    Assignee: General Electric Company
    Inventors: Uwe Wiedmann, Biju Jacob, Peter Michael Edic, Brian David Yanoff
  • Publication number: 20220068585
    Abstract: Various systems and methods are provided for a biased cathode assembly of an X-ray tube with improved thermal management and a method of manufacturing same. In one example, a cathode assembly of an X-ray tube comprises an emitter assembly including an emitter coupled to an emitter support structure, and an electrode assembly including an electrode stack and a plurality of bias electrodes. The emitter assembly including a plurality of independent components that are coupled together. The electrode assembly including a plurality of independent components that are coupled together, and the emitter assembly being coupled to the electrode assembly.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 3, 2022
    Inventors: Andrew Thomas Cross, Uwe Wiedmann, Marshall Gordon Jones, Carey Rogers, John Scott Price, Joseph Darryl Michael, Sergio Lemaitre, Fulton Jose Lopez, Vasile Bogdan Neculaes, Steve Buresh, David Wagner
  • Publication number: 20220037105
    Abstract: A system for melting, sintering, or heat treating a material is provided. The system includes a cathode, an anode, and a focus coil assembly having a quadrupole magnet. The quadrupole magnet includes four poles and a yoke. The four poles are spaced apart and surround a beam cavity. Each of the four poles includes a pole face proximate the beam cavity and an end opposite the pole face. The first and third poles are aligned along an x-axis and configured to have a first magnetic polarity at their respective pole faces and a second magnetic polarity opposite the first magnetic polarity at their respective ends. The second and fourth poles are aligned along a y-axis and configured to have the second magnetic polarity at their respective pole faces and the first magnetic polarity at their respective ends. The yoke surrounds the poles and is coupled to the poles.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 3, 2022
    Inventors: John Scott Price, Ye Bai, Antonio Caiafa, Vasile Bogdan Neculaes, Uwe Wiedmann
  • Publication number: 20210350997
    Abstract: An X-ray source includes a target configured to generate X-rays when impacted by an electron beam. The target includes one or more thermally conductive layers; and one or more X-ray generating layers interleaved with the thermally conductive layers, wherein at least one X-ray generating layer comprises regions of X-ray generating material separated by thermally conductive material within the respective X-ray generating layer.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Inventors: Yong Liang, Vance Scott Robinson, Uwe Wiedmann
  • Publication number: 20210345983
    Abstract: Various methods and systems are provided for an x-ray imaging system. In one example, a method for decelerating a rotor of an x-ray tube of an imaging system includes controlling and/or monitoring a speed and position of the rotor, passing the rotor through a first position where a force exerted on the rotor, is less than Earth's gravitational pull, the force due to a combination of gravity and radial acceleration, and initiating a predefined deceleration profile to decelerate the rotor to a halt when the x-ray tube passes through the first position.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 11, 2021
    Inventors: Carey Rogers, Vasile Bogdan Neculaes, Nidhishri Tapadia, Andrew Thomas Cross, Uwe Wiedmann
  • Patent number: 11094497
    Abstract: In one embodiment, an X-ray source includes a source target configured to generate X-rays when impacted by an electron beam. The source target includes one or more thermally conductive layers; and one or more X-ray generating layers interleaved with the thermally conductive layers, wherein at least one X-ray generating layer comprises regions of X-ray generating material separated by thermally conductive material within the respective X-ray generating layer.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: August 17, 2021
    Assignee: General Electric Company
    Inventors: Yong Liang, Vance Scott Robinson, Uwe Wiedmann
  • Publication number: 20210244373
    Abstract: The present disclosure relates to fabrication and use of a phase-contrast imaging detector that includes sub-pixel resolution electrodes or photodiodes spaced to correspond to a phase-contrast interference pattern. A system using such a detector may employ fewer gratings than are typically used in a phase-contrast imaging system, with certain functionality typically provided by a detector-side analyzer grating being performed by sub-pixel resolution structures (e.g., electrodes or photodiodes) of the detector. Measurements acquired using the detector may be used to determine offset, amplitude, and phase of a phase-contrast interference pattern without multiple acquisitions at different phase steps.
    Type: Application
    Filed: February 12, 2020
    Publication date: August 12, 2021
    Inventors: Uwe Wiedmann, Biju Jacob, Peter Michael Edic, Brian David Yanoff
  • Patent number: 10893839
    Abstract: A computed tomography (CT) imaging system and method, wherein the system includes an x-ray source that is operable to emit a beam of x-rays from a focal spot and move a spot position of the focal spot. The system also includes a detector assembly that is configured to detect the x-rays attenuated by the object. At least one processing unit is configured to execute programmed instructions stored in memory. The at least one processing unit is configured to direct the x-ray source to emit different beams of the x-rays at different energy levels and to receive data from the detector assembly that are representative of detection of the x-rays emitted at the different energy levels. The at least one processing unit is also configured to direct the x-ray source to move the focal spot such that the focal spot is at different spot positions while the different beams are emitted.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: January 19, 2021
    Assignee: General Electric Company
    Inventors: Jiahua Fan, Yannan Jin, Ming Yan, Uwe Wiedmann
  • Publication number: 20200293565
    Abstract: The example embodiments are directed to a system and method which can identify a plurality of labels from free-form text included in a corpus of repair actions. The system and method can further label each repair action with a label from the determined plurality of labels. In one example, the method may include storing a plurality of repair action entries which each comprise unstructured free-form text associated with actions performed, generating a term matrix comprises a list of words extracted from the plurality of repair action entries and mapped to the plurality of repair action entries based on frequency of use within free-form text thereof, determining a plurality of labels for categorizing the actions performed via execution of a non-negative matrix factorization based on the created term matrix, and outputting information about the determined plurality of labels for display via a user interface.
    Type: Application
    Filed: March 14, 2019
    Publication date: September 17, 2020
    Inventors: Tapan SHAH, Uwe WIEDMANN
  • Patent number: 10753969
    Abstract: The present approach relates to generating one or both of a failure prediction indication for an X-ray tube or a remaining useful life estimate for the X-ray tube. In one implementation, a trained static tube model is used in estimating health (e.g., thickness) of the electron emitter of the X-ray tube, which in turn may be used in predicting remaining useful life of an electron emitter of the X-ray tube.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: August 25, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Rui Xu, Uwe Wiedmann, Jayakrishnan Unnikrishnan
  • Patent number: 10631815
    Abstract: The present approach relates to scatter correction of signals acquired using radiation detectors on a pixel-by-pixel basis. In certain implementations, the systems and methods disclosed herein facilitate scatter correction for signals generated using a detector having segmented detector elements, such as may be present in an energy-resolving, photon-counting CT imaging system.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: April 28, 2020
    Assignee: General Electric Company
    Inventors: Xue Rui, Yannan Jin, Biju Jacob, Brian David Yanoff, Uwe Wiedmann
  • Publication number: 20190374174
    Abstract: A computed tomography (CT) imaging system and method, wherein the system includes an x-ray source that is operable to emit a beam of x-rays from a focal spot and move a spot position of the focal spot. The system also includes a detector assembly that is configured to detect the x-rays attenuated by the object. At least one processing unit is configured to execute programmed instructions stored in memory. The at least one processing unit is configured to direct the x-ray source to emit different beams of the x-rays at different energy levels and to receive data from the detector assembly that are representative of detection of the x-rays emitted at the different energy levels. The at least one processing unit is also configured to direct the x-ray source to move the focal spot such that the focal spot is at different spot positions while the different beams are emitted.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Inventors: Jiahua Fan, Yannan Jin, Ming Yan, Uwe Wiedmann
  • Publication number: 20190317144
    Abstract: The present approach relates to generating one or both of a failure prediction indication for an X-ray tube or a remaining useful life estimate for the X-ray tube. In one implementation, a trained static tube model is used in estimating health (e.g., thickness) of the electron emitter of the X-ray tube, which in turn may be used in predicting remaining useful life of an electron emitter of the X-ray tube.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 17, 2019
    Inventors: Rui Xu, Uwe Wiedmann, Jayakrishnan Unnikrishnan
  • Publication number: 20190229672
    Abstract: A system may include a motor that has a rotor and a stator. The system may include one or more sensors that measure a voltage signal of a winding of the stator. The system may include a processor that executes computer-executable instructions which, when executed, cause the processor to receive, from the one or more sensors, the voltage signal that includes an induced voltage signal associated with the winding of the stator, to determine a time constant associated with the induced voltage signal based on a decay pattern of the induced voltage signal, to determine a temperature of a rotor based on the time constant, and to adjust one or more operations of the motor based on the temperature.
    Type: Application
    Filed: January 19, 2018
    Publication date: July 25, 2019
    Inventors: Uwe Wiedmann, Xu Han, Nidhishri Tapadia, Jayakrishnan Unnikrishnan, Prabhakar Neti
  • Patent number: 10290460
    Abstract: An X-ray tube is provided. The X-ray tube includes an electron beam source including a cathode configured to emit an electron beam. The X-ray tube also includes an anode assembly including an anode configured to receive the electron beam and to emit X-rays when impacted by the electron beam. The X-ray tube further includes a gridding electrode disposed about a path of the electron beam between the electron beam source and the anode assembly. The gridding electrode, when powered at a specific level, is configured to grid the electron beam in synchronization with planned transitions during a dynamic focal spot mode.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: May 14, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Michael John Utschig, Uwe Wiedmann, Bruno Kristiaan Bernard De Man, Sergio Lemaitre, Mark Alan Frontera, Antonio Caiafa, Jiahua Fan, Adam Budde
  • Patent number: 10262829
    Abstract: A circuit assembly and method use a breakover device that changes states in response to a change in electric energy in a helper circuit that supplies current from a power source to a powered system. The helper circuit includes an inductive element connected with the powered system. The breakover device is in a non-conducting state prior to a discharge event from the powered system to prevent the current from the power source from being conducted through the resistive element. The breakover device changes to a conducting state responsive to the powered system discharging current into the helper circuit. The breakover device conducts the current that is discharged from the powered system through the resistive element to reduce the electric energy in the helper circuit from the current that is discharged.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: April 16, 2019
    Assignee: General Electric Company
    Inventors: Antonio Caiafa, Phillipe Ernest, Dominique Poincloux, Uwe Wiedmann, Denis Perrillat-Amee
  • Patent number: 10213172
    Abstract: An imaging method includes executing a low-dose preparatory scan to an object by applying tube voltages and tube currents in an x-ray source, and generating a first image of the object corresponding to the low-dose preparatory scan. The method further includes generating image quality estimates and dose estimates view by view at least based on the first image. The method includes optimizing the tube voltages and the tube currents to generate optimal profiles for the tube voltage and the tube current. At least one of the optimal profiles for the tube voltage and the tube current is generated based on the image quality estimates and the dose estimates. The method includes executing an acquisition scan by applying the tube voltages and the tube currents based on the optimal profiles and generating a second image of the object corresponding to the acquisition scan. An imaging system is also provided.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: February 26, 2019
    Assignee: General Electric Company
    Inventors: Yannan Jin, Bruno Kristiaan Bernard De Man, Peter Michael Edic, Paul Francis Fitzgerald, Xue Rui, Yangyang Yao, Zhye Yin, Uwe Wiedmann
  • Patent number: 10165996
    Abstract: An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector. The processing unit is configured to determine a voltage delivery configuration for the X-ray source based on at least one of a patient size, a clinical task, or scan parameters. The voltage delivery configuration includes at least one of a transition configuration or a voltage threshold. The transition configuration corresponds to a transition between a high voltage and a low voltage. Portions of acquired data acquired above the voltage threshold are grouped as high energy data and portions acquired below the voltage threshold are grouped as low energy data. The processing unit is also configured to implement the voltage delivery configuration on the CT acquisition unit, and to control the CT acquisition unit to perform an imaging scan using the determined voltage delivery configuration.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 1, 2019
    Assignee: General Electric Company
    Inventors: Priti Madhav, Uwe Wiedmann, Eric Biehr, Jiahua Fan, Jean-Francois Larroux, Vijay Subramanian
  • Patent number: 10165663
    Abstract: An x-ray system for simultaneously or concurrently measuring currents of multiple emitters is provided. The x-ray system includes a high voltage direct current (DC) supply configured to supply tube current to the multiple emitters and plural emitter circuits. Each of these circuits includes each comprising an alternating current (AC) voltage supply, at least one of the multiple emitters operatively coupled to the AC voltage supply and the high voltage DC supply, and a circuit coupling the AC voltage supply and the high voltage DC voltage supply to the at least one of the multiple filaments. At least one of the emitter circuits has a current measurement device between the high voltage DC supply and the emitter.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: December 25, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Uwe Wiedmann, Philippe Ernest, Denis Perrillat-Amede, Dominique Poincloux, Jean-Francois Larroux