Patents by Inventor Jonathan Westhues

Jonathan Westhues 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: 10444873
    Abstract: Examples are disclosed herein that relate to communication between a capacitive touch sensor and an active stylus. An example provides an active stylus comprising an electrode tip, and receive circuitry coupled to the electrode tip. The receive circuitry may be configured to receive a capacitive signal from a touch sensor through the electrode tip, determine which of two or more drive signals produced by respective regions of the touch sensor most strongly influenced the capacitive signal, each drive signal being associated with a different operating mode, and configure one or both of the active stylus and the touch sensor to operate in the operating mode associated with the determined drive signal.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: October 15, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao
  • Patent number: 10444927
    Abstract: A touch-sensitive device includes a capacitance-based touch sensor, drive circuitry configured to drive touch sensor electrodes with a synchronization waveform to enable an active stylus to become time synchronized with the touch-sensitive device, and receive circuitry configured to determine a position of the active stylus based on electrostatically receiving a first waveform from the active stylus. Depending on when the touch-sensitive device receives the first waveform from the active stylus, the touch-sensitive device interprets the first waveform differently to determine a position of the active stylus or determine that the active stylus is hovering. In either case, the same waveform is used to communicate different information about the active stylus to the touch-sensitive device.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: October 15, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao
  • Patent number: 10394384
    Abstract: Embodiments are disclosed that relate to touch input detection in a touch sensor. One example provides a method comprising establishing a first reference sequence, starting with a first set of candidate reference sequences each differing from the first reference sequence, reducing the first set of candidate reference sequences by applying a rule set to the first set to derive a relatively smaller second set of candidate reference sequences, for each candidate reference sequence in the second set of candidate reference sequences, calculating a touch detection performance score of a combined reference sequence, and configuring at least a portion of a receive circuit to correlate signals to at least one of the touch detection conditions by using the first reference sequence in a combined correlation operation with at least a selected candidate reference sequence from the second set of candidate reference sequences.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: August 27, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao
  • Patent number: 10345970
    Abstract: A touch-sensitive display device includes a touch sensor, drive circuitry and receive circuitry. The touch sensor has a matrix of row electrodes and column electrodes. The drive circuitry drives the row electrodes during a touch-sensing frame to influence electrical conditions on the column electrodes. The receive circuitry, during the touch-sensing frame, for each row electrode of the matrix, measures a capacitance of each column electrode while the row electrode is being driven, for each of a plurality of different sections of column electrodes of the matrix, performs local analysis of the measured capacitances of the column electrodes of the section to estimate a row-specific noise capacitance for each column electrode, and determines a touch input based on a difference between the measured capacitance of the column electrode while the row electrode is being driven and the estimated row-specific noise capacitance of the column electrode.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: July 9, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Tianzhu Qiao, Jonathan Westhues
  • Patent number: 10261622
    Abstract: Examples are described for touch-sensitive displays in which ground references for associated electronics are isolated from one another. In one example, a touch-sensitive display includes a display panel, and a touch sensor, the touch sensor including a receive electrode, the touch sensor including a transmit electrode, the receive electrode and the transmit electrode overlaying the display panel, and wherein a ground reference of the receive and/or the transmit electrode is isolated from a ground reference of the display panel, thereby creating a transmission-inhibiting communication boundary between the display panel and the touch sensor, the touch sensor communicatively connected to the display panel so as to exchange data between ground domains separated by the boundary.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: April 16, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Denis Varlamov, Yingying Tang, Jonathan Westhues, Tianzhu Qiao
  • Patent number: 10261604
    Abstract: A touch-sensitive display device includes a touch sensor having a plurality of touch-sensing electrodes and control logic coupled to the plurality of touch-sensing electrodes. The control logic is configured to, in a non-reference time frame and based on a spatial capacitance measurement received for a first stylus electrode of an active stylus, estimate a non-reference time frame location of the first stylus electrode relative to the plurality of touch-sensing electrodes. In a reference time frame, based on a spatial capacitance measurement received for a second stylus electrode of the active stylus, a reference time frame location of the second stylus electrode is estimated. Based on an estimated velocity of the first stylus electrode, the non-reference location of the first stylus electrode is velocity corrected to give a reference time frame location of the first stylus electrode.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: April 16, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao
  • Publication number: 20190102003
    Abstract: Examples are disclosed herein that relate to various operational modes of a capacitive touch sensor. One example provides a touch-sensitive input device comprising receive circuitry, a capacitive touch sensor having a plurality of portions, and a controller. The controller is configured to, responsive to not detecting a finger or a pen, operate the touch sensor in a locating mode by successively driving each portion with a fixed DC voltage and multiplexing the portion to the receive circuitry in a predefined sequence, and responsive to detecting the pen, operate the touch sensor in a tracking mode by driving a selected portion with the fixed DC voltage and multiplexing the selected portion to the receive circuitry to track the pen, the selected portion selected based on a detected location of the pen relative to the touch sensor and being varied as the detected location changes.
    Type: Application
    Filed: April 23, 2018
    Publication date: April 4, 2019
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Arie Yehuda GUR, Zohar NAGOLA, Jonathan WESTHUES
  • Patent number: 10234966
    Abstract: An active stylus includes a body, an electrical connector operatively coupled to the body, wired connection circuitry contained within the body and electrically coupled to the electrical connector, and electrostatic circuitry contained within the body and electrically coupled to the electrical connector. The electrical connector is configured to electrically couple the active stylus with a device via a wired connection. The wired connection circuitry is configured to hold at least a portion of the electrical connector at ground when the active stylus is operating in a wired connection mode. The electrostatic circuitry is configured to transmit, via the electrical connector, one or more excitation waveforms when the active stylus is operating in an electrostatic mode.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: March 19, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Steven N. Bathiche, Denis V. Varlamov
  • Patent number: 10228778
    Abstract: A touch-sensing system comprises an active stylus including a probe electrode and associated sensory logic. The sensory logic is configured to receive a synchronization pulse sequence via the probe electrode between consecutive touch-sensing frames of a capacitive touch screen, to use the synchronization pulse sequence to establish a timing scheme shared between the active stylus and the capacitive touch screen, to receive an excitation pulse via the probe electrode within a given touch-sensing frame, and to use the excitation pulse to maintain the shared timing scheme.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: March 12, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao
  • Publication number: 20190064941
    Abstract: An active stylus includes a body, an electrical connector operatively coupled to the body, wired connection circuitry contained within the body and electrically coupled to the electrical connector, and electrostatic circuitry contained within the body and electrically coupled to the electrical connector. The electrical connector is configured to electrically couple the active stylus with a device via a wired connection. The wired connection circuitry is configured to hold at least a portion of the electrical connector at ground when the active stylus is operating in a wired connection mode. The electrostatic circuitry is configured to transmit, via the electrical connector, one or more excitation waveforms when the active stylus is operating in an electrostatic mode.
    Type: Application
    Filed: August 22, 2017
    Publication date: February 28, 2019
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Jonathan WESTHUES, Steven N. BATHICHE, Denis V. VARLAMOV
  • Publication number: 20190064975
    Abstract: A touch-sensitive in-cell display device includes an active matrix of row conductors and column conductors, a plurality of pixels, and a controller. Each pixel is connected to a row conductor and a column conductor at a different intersection of the active matrix and each pixel is connected to a common electrode. The controller is configured to perform a display-write operation on a pixel at a first time at least by applying different voltages to the row conductor, the column conductor, and the common electrode connected to the first pixel, and perform an electrostatic measurement at a second time at least by applying a same common-mode excitation voltage to the row conductor, the column conductor, and the common electrode connected to the pixel, while measuring a current through a designated conductor.
    Type: Application
    Filed: January 12, 2018
    Publication date: February 28, 2019
    Applicant: Microsoft Technology Licensing, LLC
    Inventor: Jonathan WESTHUES
  • Patent number: 10216333
    Abstract: Present disclosure provides techniques to compensate for the above-identified signal processing delays between an in-cell digitizer of the touch screen display system and a stylus (or pen). In one example, the delays may be compensated by estimating the stylus-digitizer phase error on the digitizer side and adjusting for the delay accordingly. Specifically, in this example, the digitizer may utilize a quadratic receiver to perform an in-phase and quadratic detection in time domain in order to estimate the phase error. Based on the in-phase and quadratic detection, the digitizer may adapt the subsequent stylus sampling windows to compensate for the detected phase error. In another example, the stylus may transmit a first signal and a second signal that is 90 degrees delayed during a predetermined time slot, and to adapt the stylus sampling windows on the digitizer side in order to compensate for the phase delay.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 26, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Amir Zyskind, On Haran, Jonathan Westhues, Arie Yehuda Gur
  • Patent number: 10203778
    Abstract: Examples are disclosed herein that relate to capacitive touch sensor operation. An example provides a method for operating a display system having a capacitive touch sensor comprising operating the touch sensor over a plurality of successively repeating touch frames, with the touch sensor, determining a motion vector for an active stylus in relation to the touch sensor, and in each of the touch frames, for a stylus-interaction sub-frame of that touch frame allocated for performing electrostatic interaction between an active stylus and the touch sensor, selecting a portion of the touch sensor based on the motion vector. In each of the stylus-interaction sub-frames, the selected portion of the touch sensor may be operated differently than other portions of the touch sensor to carry out the electrostatic interaction.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: February 12, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao
  • Publication number: 20190004664
    Abstract: Present disclosure provides techniques to compensate for the above-identified signal processing delays between an in-cell digitizer of the touch screen display system and a stylus (or pen). In one example, the delays may be compensated by estimating the stylus-digitizer phase error on the digitizer side and adjusting for the delay accordingly. Specifically, in this example, the digitizer may utilize a quadratic receiver to perform an in-phase and quadratic detection in time domain in order to estimate the phase error. Based on the in-phase and quadratic detection, the digitizer may adapt the subsequent stylus sampling windows to compensate for the detected phase error. In another example, the stylus may transmit a first signal and a second signal that is 90 degrees delayed during a predetermined time slot, and to adapt the stylus sampling windows on the digitizer side in order to compensate for the phase delay.
    Type: Application
    Filed: June 30, 2017
    Publication date: January 3, 2019
    Inventors: Amir ZYSKIND, On Haran, Jonathan Westhues, Arie Yehuda Gur
  • Publication number: 20180338065
    Abstract: The presently disclosed technology uses predefined handwriting characteristics to create and/or refine a stylus position interpolation function over time to provide more accurate and adaptive renderings of the user's handwriting on a touch screen. As the presently disclosed technology is performed on a specific device and uses data collected from one or more specific users, it adapts the stylus position interpolation function for any device-specific or user-specific variations. Further, as the stylus position interpolation function adapts iteratively over time, it may not converge and continues to adapt as the device ages, the user's habits change, or identify of the user changes, and environmental conditions of the device change.
    Type: Application
    Filed: May 19, 2017
    Publication date: November 22, 2018
    Inventors: Amir ZYSKIND, Jonathan WESTHUES, Ilan GELLER, On HARAN
  • Patent number: 10126889
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: November 13, 2018
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jonathan Westhues, Jefferson Y. Han
  • Patent number: 10082890
    Abstract: An active stylus includes an electrode and a controller. The controller is configured to 1) generate a report including stylus information represented by a plurality of bits including a first subset of bits and a second subset of bits, 2) encode the first set of bits differently than the second set of bits to reduce a size of the report, and 3) excite the electrode with a carrier signal to form an electrostatic communication channel, the carrier signal being modulated to transmit the report via the electrostatic communication channel.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: September 25, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tianzhu Qiao, Jonathan Westhues
  • Publication number: 20180260077
    Abstract: A touch-sensitive display device includes a capacitance-based touch sensor including a plurality of electrodes, a display including a plurality of pixels, an image source configured to output image frames at a video frame rate, and a controller. The controller is configured to perform capacitance measurements on the capacitance-based touch sensor in capacitance-measurement intervals of a touch-sensing frame, and perform display-write operations on the display to write each image frame to the display in display-write intervals of the touch-sensing frame that do not temporally overlap with the capacitance-measurement intervals of the touch-sensing frame. The controller is configured repeat the touch-sensing frame at a fixed touch-sensing frame rate that is different than the video frame rate.
    Type: Application
    Filed: January 5, 2018
    Publication date: September 13, 2018
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Jonathan WESTHUES, Amir ZYSKIND
  • Patent number: 10042439
    Abstract: An interactive stylus for use with an interactive display device is provided. The interactive stylus includes a stylus body having a first end, where the first end is configured to be used by a user to provide a first function and a second function. The interactive stylus further includes a controller configured to cause the first end to be driven so as to capacitively couple the first end with an electrode matrix of the interactive display device, where such capacitive coupling is associated with the first function, and where the second function is disabled in response to automatically sensing, without explicit user input, a user's intent to use the first function.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: August 7, 2018
    Assignee: MICROSFT TECHNOLOGY LICENSING, LLC
    Inventors: Denis Varlamov, Jonathan Westhues
  • Publication number: 20180210610
    Abstract: Embodiments are disclosed that relate to touch input detection in a touch sensor. One example provides a method comprising establishing a first reference sequence, starting with a first set of candidate reference sequences each differing from the first reference sequence, reducing the first set of candidate reference sequences by applying a rule set to the first set to derive a relatively smaller second set of candidate reference sequences, for each candidate reference sequence in the second set of candidate reference sequences, calculating a touch detection performance score of a combined reference sequence, and configuring at least a portion of a receive circuit to correlate signals to at least one of the touch detection conditions by using the first reference sequence in a combined correlation operation with at least a selected candidate reference sequence from the second set of candidate reference sequences.
    Type: Application
    Filed: March 22, 2018
    Publication date: July 26, 2018
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Jonathan Westhues, Tianzhu Qiao