Patents by Inventor Andriy Ryshtun

Andriy Ryshtun 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).

  • Patent number: 11126310
    Abstract: A spatial frequency based capacitive motion system and method of operating the same are disclosed. In one embodiment, the system includes an array of sense cells to sense capacitance variations induced by a detected surface in proximity to the array. The system further includes processing circuitry including one or more differential detectors and a processor to process output signals from the one or more differential detectors to measure displacement of the detected surface in a direction parallel to the array. Other embodiments are also disclosed.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: September 21, 2021
    Assignee: Cypress Semiconductor Corporation
    Inventors: John Frame, Victor Kremin, Andriy Ryshtun, Dmytro Puyda
  • Patent number: 11093055
    Abstract: A system and method for synchronizing a stylus to a capacitive sense array. The system including a capacitive sense array which includes a plurality of electrodes. A magnetic field is generated using the plurality of electrodes. The magnetic field is used to synchronize the operation of the stylus and the capacitive sense array.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: August 17, 2021
    Assignee: Wacom Co., Ltd.
    Inventors: Viktor Kremin, Andriy Ryshtun
  • Publication number: 20210157422
    Abstract: An elongated stylus is configured to be capacitively coupled with a sensor array providing a plurality of electrodes to indicate a position on the sensor array. The stylus includes a housing having an end in an elongated direction of the housing, a conductive tip disposed at least partially extended from the end of the housing, an electrode disposed around the conductive tip and configured to at least partially expose the conductive tip, and a signal transmit drive circuit configured to provide a signal. Control is performed to form an electrical connection between the electrode and a ground and an electrical connection between the electrode and the signal transmit drive circuit when the elongated stylus is activated for capacitive coupling with the sensor array.
    Type: Application
    Filed: February 1, 2021
    Publication date: May 27, 2021
    Inventors: Viktor Kremin, Andriy Ryshtun, David G. Wright
  • Publication number: 20210097254
    Abstract: A circuit, system, and method for measuring or detecting pressure or force of a fingerprint on an array of electrodes is described. Pressure or force may be measured or detected using a processed image of the fingerprint, or by measurement of capacitance of deformed variable capacitors.
    Type: Application
    Filed: August 20, 2020
    Publication date: April 1, 2021
    Applicant: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Viktor Kremin
  • Patent number: 10908710
    Abstract: An elongated stylus is configured to be capacitively coupled with a sensor array providing a plurality of electrodes to indicate a position on the sensor array. The stylus includes a housing having an end in an elongated direction of the housing, a conductive tip disposed at least partially extended from the end of the housing, an electrode disposed around the conductive tip and configured to at least partially expose the conductive tip, and a signal transmit drive circuit configured to provide a signal. Control is performed to form an electrical connection between the electrode and a ground and an electrical connection between the electrode and the signal transmit drive circuit when the elongated stylus is activated for capacitive coupling with the sensor array.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 2, 2021
    Assignee: Wacom Co., Ltd.
    Inventors: Viktor Kremin, Andriy Ryshtun, David G. Wright
  • Publication number: 20200363883
    Abstract: A capacitive sensor includes a switching capacitor circuit, a comparator, and a charge dissipation circuit. The switching capacitor circuit reciprocally couples a sensing capacitor in series with a modulation capacitor during a first switching phase and discharges the sensing capacitor during a second switching phase. The comparator is coupled to compare a voltage potential on the modulation capacitor to a reference and to generate a modulation signal in response. The charge dissipation circuit is coupled to the modulation capacitor to selectively discharge the modulation capacitor in response to the modulation signal.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 19, 2020
    Applicant: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Viktor Kremin
  • Patent number: 10762325
    Abstract: A circuit, system, and method for measuring or detecting pressure or force of a fingerprint on an array of electrodes is described. Pressure or force may be measured or detected using a processed image of the fingerprint, or by measurement of capacitance of deformed variable capacitors.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 1, 2020
    Assignee: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Viktor Kremin
  • Publication number: 20200209999
    Abstract: A spatial frequency based capacitive motion system and method of operating the same are disclosed. In one embodiment, the system includes an array of sense cells to sense capacitance variations induced by a detected surface in proximity to the array. The system further includes processing circuitry including one or more differential detectors and a processor to process output signals from the one or more differential detectors to measure displacement of the detected surface in a direction parallel to the array. Other embodiments are also disclosed.
    Type: Application
    Filed: January 21, 2020
    Publication date: July 2, 2020
    Applicant: Cypress Semiconductor Corporation
    Inventors: John Frame, Victor Kremin, Andriy Ryshtun, Dmytro Puyda
  • Patent number: 10678355
    Abstract: A system and method for synchronizing a stylus to a capacitive sense array. The system including a capacitive sense array which includes a plurality of electrodes. A synchronization signal is transmitted to the stylus using the plurality of electrodes. The synchronization signal is transmitted to the stylus by capacitively coupling the stylus to the capacitive sense array.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: June 9, 2020
    Assignee: Wacom Co., Ltd.
    Inventors: Viktor Kremin, Andriy Ryshtun, David Wright, Jeff M. Boschee
  • Publication number: 20200160019
    Abstract: A method for detecting a finger at a fingerprint sensor includes detecting a presence of an object at a fingerprint sensor and, in response to detecting the presence of the object, acquiring image data for the object based on signals from the fingerprint sensor. The method further includes, for each subset of one or more subsets of the image data, calculating a magnitude value for a spatial frequency of the subset, and identifying the object as a finger based on comparing the magnitude value to a threshold.
    Type: Application
    Filed: July 18, 2019
    Publication date: May 21, 2020
    Applicant: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Oleksandr Rohozin, Viktor Kremin, Oleg Kapshii
  • Publication number: 20200117290
    Abstract: An elongated stylus is configured to be capacitively coupled with a sensor array providing a plurality of electrodes to indicate a position on the sensor array. The stylus includes a housing having an end in an elongated direction of the housing, a conductive tip disposed at least partially extended from the end of the housing, an electrode disposed around the conductive tip and configured to at least partially expose the conductive tip, and a signal transmit drive circuit configured to provide a signal. Control is performed to form an electrical connection between the electrode and a ground and an electrical connection between the electrode and the signal transmit drive circuit when the elongated stylus is activated for capacitive coupling with the sensor array.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 16, 2020
    Inventors: Viktor Kremin, Andriy Ryshtun, David G. Wright
  • Patent number: 10599911
    Abstract: A method for detecting fingerprint spoof objects includes detecting a presence of the object at a fingerprint sensor and, in response to detecting the presence of the object, measuring a set of physical properties of the object based on one or more signals from a set of electrodes of the fingerprint sensor. The set of physical properties includes at least one of a subdermal compliance of the object and a surface adhesiveness of the object. The method further includes distinguishing the object as an actual finger or a spoof based on the one or more physical properties.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 24, 2020
    Assignee: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Viktor Kremin, Oleksandr Rohozin, Oleksandr Pirogov, Mykhaylo Krekhovetskyy, Volodymyr Bihday, Roman Ogirko
  • Patent number: 10579193
    Abstract: A spatial frequency based capacitive motion sensor and method of operating the same are disclosed. In one embodiment, the motion sensor includes an array of sense cells to capacitively sense capacitance variations induced by a surface in proximity to the array. The motion sensor further includes processing circuitry including a multiplexer and a processor to process motion dependent output signals from the array to measure motion of the surface in a direction parallel to a surface of the array. Generally, processor is adapted to execute a program to control the multiplexer to interconnect the sense cells of the array to configure the array as a comb-filter to detect at least one spatial frequency component of the capacitance variations, and to measure motion of the surface in a direction parallel to the array. Other embodiments are also disclosed.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: March 3, 2020
    Assignee: Cypress Semiconductor Corporation
    Inventors: John Frame, Victor Kremin, Andriy Ryshtun, Dmytro Puyda
  • Patent number: 10521027
    Abstract: An elongated stylus is configured to be capacitively coupled with a sensor array providing a plurality of electrodes to indicate a position on the sensor array. The stylus includes a housing having an end in an elongated direction of the housing, a conductive tip disposed at least partially extended from the end of the housing, an electrode disposed around the conductive tip and configured to at least partially expose the conductive tip, and a signal transmit drive circuit configured to provide a signal. Control is performed to form an electrical connection between the electrode and a ground and an electrical connection between the electrode and the signal transmit drive circuit when the elongated stylus is activated for capacitive coupling with the sensor array.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: December 31, 2019
    Assignee: Wacom Co., Ltd.
    Inventors: Viktor Kremin, Andriy Ryshtun, David G. Wright
  • Patent number: 10460144
    Abstract: A method for detecting a finger at a fingerprint sensor includes detecting a presence of an object at a fingerprint sensor and, in response to detecting the presence of the object, acquiring image data for the object based on signals from the fingerprint sensor. The method further includes, for each subset of one or more subsets of the image data, calculating a magnitude value for a spatial frequency of the subset, and identifying the object as a finger based on comparing the magnitude value to a threshold.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: October 29, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Oleksandr Rohozin, Viktor Kremin, Oleg Kapshii
  • Publication number: 20190205604
    Abstract: A circuit, system, and method for measuring or detecting pressure or force of a fingerprint on an array of electrodes is described. Pressure or force may be measured or detected using a processed image of the fingerprint, or by measurement of capacitance of deformed variable capacitors.
    Type: Application
    Filed: December 18, 2018
    Publication date: July 4, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Viktor Kremin
  • Publication number: 20190187829
    Abstract: A spatial frequency based capacitive motion sensor and method of operating the same are disclosed. In one embodiment, the motion sensor includes an array of sense cells to capacitively sense capacitance variations induced by a surface in proximity to the array. The motion sensor further includes processing circuitry including a multiplexer and a processor to process motion dependent output signals from the array to measure motion of the surface in a direction parallel to a surface of the array. Generally, processor is adapted to execute a program to control the multiplexer to interconnect the sense cells of the array to configure the array as a comb-filter to detect at least one spatial frequency component of the capacitance variations, and to measure motion of the surface in a direction parallel to the array. Other embodiments are also disclosed.
    Type: Application
    Filed: March 20, 2018
    Publication date: June 20, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: John Frame, Victor Kremin, Andriy Ryshtun, Dmytro Puyda
  • Publication number: 20190155406
    Abstract: A system and method for synchronizing a stylus to a capacitive sense array. The system including a capacitive sense array which includes a plurality of electrodes. A magnetic field is generated using the plurality of electrodes. The magnetic field is used to synchronize the operation of the stylus and the capacitive sense array.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 23, 2019
    Inventors: Viktor Kremin, Andriy Ryshtun
  • Patent number: 10261605
    Abstract: An elongated stylus is configured to be capacitively coupled with a sensor array providing a plurality of electrodes to indicate a position on the sensor array. The stylus includes a housing having an end in an elongated direction of the housing, a conductive tip disposed at least partially extended from the end of the housing, an electrode disposed around the conductive tip and configured to at least partially expose the conductive tip, and a signal transmit drive circuit configured to provide a signal. Control is performed to form an electrical connection between the electrode and a ground and an electrical connection between the electrode and the signal transmit drive circuit when the elongated stylus is activated for capacitive coupling with the sensor array.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: April 16, 2019
    Assignee: WACOM CO., LTD.
    Inventors: Viktor Kremin, Andriy Ryshtun, David G. Wright
  • Publication number: 20190087032
    Abstract: A capacitive sensor includes a switching capacitor circuit, a comparator, and a charge dissipation circuit. The switching capacitor circuit reciprocally couples a sensing capacitor in series with a modulation capacitor during a first switching phase and discharges the sensing capacitor during a second switching phase. The comparator is coupled to compare a voltage potential on the modulation capacitor to a reference and to generate a modulation signal in response. The charge dissipation circuit is coupled to the modulation capacitor to selectively discharge the modulation capacitor in response to the modulation signal.
    Type: Application
    Filed: July 12, 2018
    Publication date: March 21, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Andriy Ryshtun, Viktor Kremin