Patents by Inventor Hongxuan Zhang

Hongxuan Zhang 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: 20220407366
    Abstract: A method of operation of a wireless charger device includes transmitting a wireless charging signal to a receiver device. The method further includes receiving a clamping pulse from the receiver device based on the wireless charging signal. The clamping pulse indicates a first value associated with a falling edge of the clamping pulse and further indicates a second value associated with a rising edge of the clamping pulse. The clamping pulse is detected based on a comparison of a first threshold with the first value and further based on a comparison of a second threshold with the second value, and the second threshold is different than the first threshold. The method further includes determining a charging state of the receiver device based on the clamping pulse.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 22, 2022
    Inventors: Hongxuan Zhang, Li Sun, Luis Ortiz Hernandez
  • Patent number: 11469088
    Abstract: A signal processing assembly for a detector includes a signal amplifier, a control unit, and an offset control module. The signal amplifier is configured to receive an input signal from the detector assembly and to provide an output signal. The control unit is configured to compare a first data point from the output signal with a signal range, and to generate an input bias control signal based upon the comparison. The offset control module is coupled with the control unit and configured to receive the input bias control signal. The offset control module includes a power supply operatively coupled with an input of the signal amplifier, and the offset control module is configured to generate and apply an adaptive input offset signal at the input of the signal amplifier based upon the input bias control signal.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: October 11, 2022
    Assignee: THERMO FINNIGAN LLC
    Inventors: Hongxuan Zhang, Scott T. Quarmby
  • Publication number: 20220320890
    Abstract: An implantable medical device (IMD) is configured to provide stimulation therapy to a patient. The IMD includes a rechargeable battery, pulse generating circuitry powered by the rechargeable battery and an inductive coupling element including at least one inductor operative to accept radio frequency (RF) power from an external charger and generate a charging voltage. A temperature sensor is configured to measure a temperature of at least a part of the IMD and output measured temperature data. A waveform generating circuit for converting measured temperature data to a waveform signal for controlling a recharging current for the rechargeable battery. The inductive coupling element is configured to communicate the waveform signal to the external charger.
    Type: Application
    Filed: August 24, 2021
    Publication date: October 6, 2022
    Inventors: Hongxuan Zhang, Li Sun, Luis Ortiz-Hernandez
  • Publication number: 20220226659
    Abstract: An implantable medical device (IMD) includes a rechargeable battery, pulse generating circuitry, an inductive coupling element including at least one inductor operative to accept radio frequency (RF) power from an external charger and generate a charging current. A recharging circuit generates a recharge current for recharging the rechargeable battery, the recharge current being based on the charging current generated from the inductive coupling element. The recharging circuitry is operable to detect a recharging level of the rechargeable battery. A temperature sensor is configured to measure a temperature of at least a part of the IMD and output measured temperature data. A control circuit controls the charging current received at the recharging circuitry to limit the charging current based upon the recharging level and to limit the charging current for a period of time based upon the measured temperature data to communicate a temperature level to the external charger.
    Type: Application
    Filed: August 25, 2021
    Publication date: July 21, 2022
    Inventors: Hongxuan Zhang, Li Sun, Luis Ortiz-Hernandez
  • Publication number: 20220193426
    Abstract: The present disclosure provides systems and methods for wirelessly charging an implantable medical device. An external charging device includes a coil, signal generating circuitry to drive current through the coil at a charging frequency to induce current in a second coil in the implantable medical device, monitoring circuitry to generate an output signal to monitor charging operations, and a comb filter. The comb filter is configured to apply filtering to the output signal to remove noise from the output signal, wherein the filtering is applied based on the charging frequency. The external charging device is configured to process the filtered output signal to detect a circuit state of charging circuitry of the implantable medical device during charging operations, and the external charging device is configured to vary the charging frequency based, in part, on detection of the circuit state of the charging circuitry of the implantable medical device.
    Type: Application
    Filed: August 26, 2021
    Publication date: June 23, 2022
    Inventors: Luis Ortiz Hernandez, Santhosh Seetharaman, Seil Oh, Edward Lundberg, Nicholas Sachs, Hongxuan Zhang, William Winstrom
  • Publication number: 20220151430
    Abstract: A kitchen appliance is disclosed. The kitchen appliance comprises: a user interface control unit for interacting with a user; a plurality of driver units configured to control power supply to a plurality of coils; and the plurality of coils configured to heat one or more cookers based on electromagnetic induction effect, wherein each driver unit is configured to generate a control signal for a corresponding coil of the plurality of coils, and the control signal is used for controlling the power supply to the corresponding coil by controlling turn-on or turn-off of an insulated gate bipolar transistor (IGBT) in a single-pipe module.
    Type: Application
    Filed: March 6, 2020
    Publication date: May 19, 2022
    Inventors: Peng WU, Zhenquan WU, Hongxuan ZHANG
  • Publication number: 20220122827
    Abstract: A signal processing assembly for a detector includes a signal amplifier, a control unit, and an offset control module. The signal amplifier is configured to receive an input signal from the detector assembly and to provide an output signal. The control unit is configured to compare a first data point from the output signal with a signal range, and to generate an input bias control signal based upon the comparison. The offset control module is coupled with the control unit and configured to receive the input bias control signal. The offset control module includes a power supply operatively coupled with an input of the signal amplifier, and the offset control module is configured to generate and apply an adaptive input offset signal at the input of the signal amplifier based upon the input bias control signal.
    Type: Application
    Filed: October 19, 2020
    Publication date: April 21, 2022
    Applicant: THERMO FINNIGAN LLC
    Inventors: Hongxuan ZHANG, Scott T. QUARMBY
  • Publication number: 20220071685
    Abstract: Electrosurgical systems and methods. At least one example embodiment is a method including: performing a first electrosurgical activity by way of first energy at a first frequency applied to an active electrode of an electrosurgical wand, the application of the first energy by way of an electrosurgical generator, and the first electrosurgical activity produces a first effect that is tissue-altering; and measuring an electrosurgical parameter by way of a second energy at a second frequency applied to the active electrode, the measuring simultaneously with the performing of the first electrosurgical activity, and the second frequency different than the first frequency.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 10, 2022
    Applicants: SMITH & NEPHEW, INC., SMITH & NEPHEW ORTHOPAEDICS AG
    Inventor: Hongxuan Zhang
  • Patent number: 10849509
    Abstract: Disclosed herein is a framework for facilitating patient signal filtering. In accordance with one aspect, the framework performs a signature cycle matching pursuit method to remove a first signal component from a combination patient signal and generate a first output signal. Sub-bandwidth filtering of the first output signal may be performed to remove a second signal component and generate a second output signal. The framework may further remove a third signal component from the second output signal to generate a third output signal. A signal of interest may then be reconstructed based on the third output signal.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: December 1, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10610652
    Abstract: The present invention discloses a method for synchronized ventilation using an external diaphragm pacemaker and a ventilator, which includes the following steps: (1) filtrating captured EAdi signal to reduce the noises, (2) assessing the absolute peak value a of the EAdi signal and: if a<0.5 ?V, adjust the external diaphragm pacemaker to issue a stimulus current at a frequency of 10-12 beats per minute, and at the same time trigger the ventilator to perform ventilation in an assisted ventilation mode; if 0.5?a?1.0 ?V, adjust the external diaphragm pacemaker to issue a stimulus current at a frequency of 5-8 beats per minute, and at the same time trigger the ventilator to perform ventilation in an assisted ventilation mode; if 1.0<a?2.0 ?V, adjust the external diaphragm pacemaker to issue a stimulus current at a frequency of 3-4 beats per minute and at the same time trigger the ventilator to perform ventilation in an assisted ventilation mode.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: April 7, 2020
    Inventor: Hongxuan Zhang
  • Patent number: 10588586
    Abstract: A system and method includes reception of a first image of a blood vessel, reception of a second image of the blood vessel, determination of a first size of a region of the blood vessel based on the first image, determination of a second size of the region of the blood vessel based on the second image, and calculation of a parameter of the blood vessel based on the first size and the second size.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 17, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10588577
    Abstract: Disclosed herein is a framework for facilitating patient signal analysis. In accordance with one aspect, the framework performs affine template matching of a region of interest from patient signal data with a baseline signal portion by performing an affine waveform transformation of the region of interest. One or more affine ratios may be determined based on the matched region of interest and the baseline signal portion for generating a report or diagnosis of a cardiac event.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 17, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10541048
    Abstract: A patient treatment monitoring system includes an interface for receiving multiple different types of patient medical information including data derived from a patient monitoring device and a patient medical imaging device. A data processor processes the received multiple different types of patient medical information to be suitable for presentation in a display image. A display processor initiates generation of data representing a single composite display image including an image element representing multiple sequentially performed individual stages of a treatment process. The individual stages are associated with corresponding different sets of the received multiple different types of patient medical information. The single composite display image includes multiple image areas for displaying one of the corresponding different sets of the received multiple different types of patient medical information, in response to user selection of a particular stage of the individual stages using the image element.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: January 21, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Hongxuan Zhang, Dennis Steibel, Jr.
  • Patent number: 10398321
    Abstract: Disclosed herein is a framework for facilitating thermal patient signal analysis. In accordance with one aspect, the framework receives patient signal data including thermal signal data. The framework then segments a waveform of the thermal signal data into portions and extracts thermal parameters based on the segmented portions. The framework then determines one or more thermal indices based at least in part on the thermal parameters and generates a report that presents cardiac event detection results determined based at least in part on the one or more thermal indices.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: September 3, 2019
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10327648
    Abstract: Disclosed herein is a framework for facilitating patient signal analysis. In accordance with one aspect, the framework receives signal data including mechanical signal data, wherein the mechanical signal data is generated in response to mechanical contraction of blood vessels. A region of interest is segmented from the mechanical signal data. One or more mechanical signal ratios may be determined based on parameters extracted from the segmented region of interest to characterize waveform changes. A report may then be generated based at least in part on the one or more mechanical signal ratios.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: June 25, 2019
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10278595
    Abstract: Disclosed herein is a framework for facilitating patient signal analysis. In accordance with one aspect, first and second patient signal data are received from a patient monitor. The first and second patient signal data may then be segmented into respective first and second regions of interest, from which respective first and second waveform parameters may be extracted. One or more morphology indices may then be generated based on the first and second waveform parameters to compare shapes of the first and second regions of interest.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: May 7, 2019
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10278593
    Abstract: Disclosed herein is a framework for facilitating adaptive control of monitoring devices. In accordance with one aspect, a position detector detects a chest elevation level and provides chest elevation level data. A processor uses the chest elevation level data to determine a heart elevation level with respect to a reference level. A comparator compares the determined heart elevation level with an elevation level of a monitoring device with respect to the reference level. In response to the comparison, a movement system adjusts the elevation level of the monitoring device.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 7, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Soroosh Kargar, Steve D. Quam, Hongxuan Zhang
  • Patent number: 10251564
    Abstract: Disclosed herein is a framework for facilitating thermal patient signal analysis. In accordance with one aspect, the framework receives patient signal data including thermal signal data. The framework then segments a region of interest from the thermal signal data. One or more cardiac output indices may be determined based on one or more parameters extracted from the segmented region of interest to characterize cardiac output or stroke volume. A report may then be generated based at least in part on the one or more cardiac output indices.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 9, 2019
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10149625
    Abstract: Disclosed herein is a framework for facilitating patient signal analysis based on vector analysis. In accordance with one aspect, a set of vectors is generated from a patient signal data waveform. The vectors may be directed from a common center to points of interest on the patient signal data waveform. The framework may further extract one or more vector parameters from the set of vectors, and determine one or more vector ratios based on the vector parameters to monitor changes in the patient signal data waveform.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: December 11, 2018
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang
  • Patent number: 10064560
    Abstract: A system for heart performance characterization and abnormality detection includes an interface for receiving digitized electrical signals representing blood pressure waveforms over one or more heart beat cycles. The digitized electrical signals comprise, a first digital data sequence representing normal blood pressure of a patient, a second digital data sequence representing random blood pressure of a normal patient and a third digital data sequence representing a potentially abnormal blood pressure of a patient. A complexity processor calculates first, second and third complexity indices for the corresponding first, second and third digital data sequences respectively. A correlation processor uses the calculated first, second and third complexity indices to calculate one or more measures indicating deviation of the potentially abnormal blood pressure of the patient from a normal value.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: September 4, 2018
    Assignee: Siemens Healthcare GmbH
    Inventor: Hongxuan Zhang