Patents by Inventor Viktor Kremin

Viktor Kremin 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: 20210255727
    Abstract: Described herein are devices, methods, and systems that detect the presence of faults such as shorts and/or opens within a touch sensitive display panel. In one embodiment, a touch screen controller is disclosed, the touch screen controller comprising one or more receive channels, where each receive channel is configured to scan a corresponding group of sensors of a plurality of sensors. The touch screen controller may also comprise a plurality of multiplexers, each multiplexer configured to selectively couple a respective sensor of the plurality of sensors to a corresponding receive channel or a reference voltage. The touch screen controller may further comprise a processing device configured to detect one or more shorts based on DC current sensing. The touch screen controller may also detect one or more opens based on AC current sensing of each of the one or more receive channels.
    Type: Application
    Filed: September 21, 2020
    Publication date: August 19, 2021
    Applicant: Cypress Semiconductor Corporation
    Inventors: Oleksandr Pirogov, Viktor Kremin, Vadym Grygorenko, Jens Weber
  • 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: 20210216168
    Abstract: Technology directed to low-emissions touch controller in in-cell touch display systems is described. One in-cell touch controller includes a signal generator circuit that is configured to generate a sense signal according to a sensing function, the sense signal including a windowed sinusoidal waveform. The controller generates a transition signal to transition the in-cell touch display between a display function and the sensing function. The controller drives the sense signal and the transition signal on common voltage (VCOM) layer of electrodes during a touch scanning interval. During a display function interval an integrated display driver is configured to drive a first signal on the VCOM layer of electrodes during a display function interval.
    Type: Application
    Filed: September 18, 2020
    Publication date: July 15, 2021
    Applicant: Cypress Semiconductor Corporation
    Inventors: Viktor Kremin, Oleksandr Pirogov, Jens Weber, Yarsolav Lek, Daniel O'Keeffe, Brendan Lawton, Khosrov D. Sadeghipour, Gaurav Panchanan, Andrew Kinane
  • 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: 10928953
    Abstract: Apparatuses and methods of converting a capacitance measured on a sense element to a digital value are described. One apparatus includes a modulator having a modulator capacitor, a sense element selectively coupled in a feedback loop of the modulator to operate as a switching capacitor. The apparatus also includes a first switch coupled between a voltage source and a first node of the switching capacitor and a second switch coupled between the first node of the switching capacitor and a first node of the modulator capacitor. The switching capacitor provides a charge current to the modulator capacitor via the second switch. The modulator measures a capacitance of the sense element and converts the measured capacitance to a digital code representing the capacitance.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: February 23, 2021
    Assignee: Cypress Semiconductor Corporation
    Inventor: 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
  • 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: 10579849
    Abstract: Techniques for multi-phase scanning based on pseudo-random sequences in capacitive fingerprint applications are described herein. In an example embodiment, a method performed by a processing device comprises: receiving measurements that are representative of a portion of a finger on a capacitive fingerprint sensor array, where the measurements are obtained from sensor elements of the capacitive fingerprint sensor array that are scanned in a multi-phase mode based on an excitation vector generated from a pseudo-random sequence; and generating a fingerprint image for the portion of the finger based on the measurements.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: March 3, 2020
    Assignee: Cypress Semiconductor Corporation
    Inventors: Viktor Kremin, Spartak Mankovskyy, Roman Ogirko
  • 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: 20190179446
    Abstract: A capacitance sensing device includes a transmit (TX) generator for generating a sequence of receive (RX) signals by applying each TX signal pattern in a sequence of TX signal patterns to a set of sensor electrodes. For each TX signal pattern in the sequence of TX signal patterns, and for each subset of three or more contiguous sensor electrodes of the set of sensor electrodes, the TX generator applies to the subset one of a first excitation signal and a second excitation signal. The plurality of subsets includes at least half of the sensor electrodes in the set of sensor electrodes. The capacitance sensing device also includes a sequencer circuit coupled with the TX generator. For each TX signal pattern in the sequence of TX signal patterns, the sequencer circuit determines a next subsequent TX signal pattern in the sequence based on a circular rotation of the TX signal pattern. The capacitance sensing device also includes a processing block coupled with the TX generator.
    Type: Application
    Filed: June 22, 2018
    Publication date: June 13, 2019
    Applicant: Cypress Semiconductor Corporation
    Inventors: Viktor Kremin, Volodymyr Bihday, Ruslan Omelchuk, Oleksandr Pirogov, Vasyl Mandziy, Roman Ogirko, Ihor Musijchuk, Andriy Maharyta, Igor Kolych, Igor Kravets
  • 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: 10268867
    Abstract: A method includes providing a differential signal and generating an in-phase component of the differential signal and a quadrature component of the differential signal. The method further includes generating an output signal representing a capacitance value using the in-phase component and the quadrature component.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: April 23, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Viktor Kremin, Paul M. Walsh, Kaveh Hosseini, Jaskarn Singh Johal, Erhan Hancioglu, Onur Ozbek