Patents by Inventor Teera Songatikamas

Teera Songatikamas 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: 20220091685
    Abstract: In some examples, a stylus can include a conductive shield. In some examples, the conductive shield can include a plurality of traces along an edge of a printed circuit board (PCB) including the stylus circuitry. In some examples, the conductive shield can include a shield can coupled to the PCB and disposed around the components of the stylus circuitry. In some examples, the conductive shield can include a hollow portion into which the stylus circuitry can be disposed and a solid portion that can act as a reference electrode. In some examples, the conductive shield can include a hollow sleeve disposed around the stylus circuitry. In some examples, the conductive sleeve can be attached to the PCB. In some examples, the conductive sleeve can be disposed between layers of a housing of the stylus. In some examples, the conductive sleeve can be integrated with the stylus housing.
    Type: Application
    Filed: September 24, 2020
    Publication date: March 24, 2022
    Inventors: Daniel Jacob Benjamin BECHSTEIN, John Stephen SMITH, Siddharth SHEKAR, Teera SONGATIKAMAS, Elvis Mwenda KIBITI, Jared A. BRAUNER, Lindsay Diane Rego CORBET, Wang Chung Alston CHEUNG, Vipin AYANOOR-VITIKKATE, Nitin SITARAMAN, Joyan Gratian SANCTIS, Blake R. MARSHALL
  • Publication number: 20210314696
    Abstract: An earphone includes a housing that defines a force input surface opposite a touch input surface. A spring member in the housing includes a first arm that biases a touch sensor toward the touch input surface. The spring member also includes a second arm that biases a first force electrode toward the housing and allows the first force electrode to move toward a second force electrode when a force is applied to the force input surface. A non-binary amount of the force is determinable using a change in a mutual capacitance between the first force electrode and the second force electrode. The mutual capacitance between the first force electrode and the second force electrode may be measured upon detecting a touch using the touch sensor.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Nahid Harjee, Brian R. Twehues, Teera Songatikamas
  • Patent number: 11070904
    Abstract: An earphone includes a housing that defines a force input surface opposite a touch input surface. A spring member in the housing includes a first arm that biases a touch sensor toward the touch input surface. The spring member also includes a second arm that biases a first force electrode toward the housing and allows the first force electrode to move toward a second force electrode when a force is applied to the force input surface. A non-binary amount of the force is determinable using a change in a mutual capacitance between the first force electrode and the second force electrode. The mutual capacitance between the first force electrode and the second force electrode may be measured upon detecting a touch using the touch sensor.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: July 20, 2021
    Assignee: Apple Inc.
    Inventors: Nahid Harjee, Brian R. Twehues, Teera Songatikamas
  • Publication number: 20210219042
    Abstract: An earphone includes a speaker housing; a speaker positioned in the speaker housing; a stem extending from the speaker housing, the stem defining an input surface; a conductive object disposed within the stem; a flexible circuit positioned between the stem and the conductive object; a member positioned between the flexible circuit and the conductive object operable to allow the flexible circuit to move with respect to the stem; a force sensor electrode disposed within the flexible circuit; and a controller operable to determine an input to the earphone using a change in capacitance detected using the force sensor electrode, the change in capacitance corresponding to a non-binary amount of a force applied to the input surface. In some examples, the earphone further includes a touch sensor electrode disposed within the flexible circuit.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 15, 2021
    Inventors: Nahid Harjee, Brian R. Twehues, Teera Songatikamas, Aonan Li, Travis N. Owens, Kyle J. Campiotti
  • Publication number: 20210168487
    Abstract: An earphone includes a housing that defines a force input surface opposite a touch input surface. A spring member in the housing includes a first arm that biases a touch sensor toward the touch input surface. The spring member also includes a second arm that biases a first force electrode toward the housing and allows the first force electrode to move toward a second force electrode when a force is applied to the force input surface. A non-binary amount of the force is determinable using a change in a mutual capacitance between the first force electrode and the second force electrode. The mutual capacitance between the first force electrode and the second force electrode may be measured upon detecting a touch using the touch sensor.
    Type: Application
    Filed: February 16, 2021
    Publication date: June 3, 2021
    Inventors: Nahid Harjee, Brian R. Twehues, Teera Songatikamas
  • Patent number: 10744531
    Abstract: In an embodiment, an electromagnetic reluctance actuator comprises: a core assembly including a plurality of magnetic cores arranged in a two-dimensional plane, each core comprised of ferromagnetic material and wound by a coil of conductive wire, the coils operable for producing magnetic flux density in response to electrical currents flowing in the coils, wherein the current in each coil flows in a direction that is opposite the currents flowing in adjacent coils; and an actuator, at least a portion of which comprises ferritic material magnetically coupled to the coils by a magnetic circuit, for producing mechanical force in response to the effect of magnetic flux on the portion, the portion of the actuator being mounted for movement relative to the core assembly.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 18, 2020
    Assignee: Apple Inc.
    Inventors: Teera Songatikamas, Joseph C. Doll, Matthew A. Bigarani
  • Patent number: 10622538
    Abstract: Haptic interfaces are described. One haptic interface includes a piezoelectric body and first and second electrodes coupled to the piezoelectric body. The haptic interface also includes a control circuit. The control circuit includes a haptic actuator, a haptic sensor circuit, and an overcurrent protection circuit. The haptic actuator circuit is coupled to the first electrode and configured to charge the piezoelectric body. The charging causes the piezoelectric body to provide a haptic output. The haptic sensor circuit is coupled to the second electrode and configured to sense an electrical change at the second electrode. The electrical change is related to a haptic input received by the piezoelectric body. The overcurrent protection circuit is coupled to the second electrode and configured to limit a current flow into the haptic sensor circuit while the haptic actuator circuit is charging the piezoelectric body.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 14, 2020
    Assignee: Apple Inc.
    Inventors: Zhipeng Zhang, Richard H. Koch, Teera Songatikamas
  • Publication number: 20200100013
    Abstract: An earphone includes a housing that defines a force input surface opposite a touch input surface. A spring member in the housing includes a first arm that biases a touch sensor toward the touch input surface. The spring member also includes a second arm that biases a first force electrode toward the housing and allows the first force electrode to move toward a second force electrode when a force is applied to the force input surface. A non-binary amount of the force is determinable using a change in a mutual capacitance between the first force electrode and the second force electrode. The mutual capacitance between the first force electrode and the second force electrode may be measured upon detecting a touch using the touch sensor.
    Type: Application
    Filed: August 13, 2019
    Publication date: March 26, 2020
    Inventors: Nahid Harjee, Brian R. Twehues, Teera Songatikamas
  • Publication number: 20190027674
    Abstract: Haptic interfaces are described. One haptic interface includes a piezoelectric body and first and second electrodes coupled to the piezoelectric body. The haptic interface also includes a control circuit. The control circuit includes a haptic actuator, a haptic sensor circuit, and an overcurrent protection circuit. The haptic actuator circuit is coupled to the first electrode and configured to charge the piezoelectric body. The charging causes the piezoelectric body to provide a haptic output. The haptic sensor circuit is coupled to the second electrode and configured to sense an electrical change at the second electrode. The electrical change is related to a haptic input received by the piezoelectric body. The overcurrent protection circuit is coupled to the second electrode and configured to limit a current flow into the haptic sensor circuit while the haptic actuator circuit is charging the piezoelectric body.
    Type: Application
    Filed: July 18, 2017
    Publication date: January 24, 2019
    Inventors: Zhipeng Zhang, Richard H. Koch, Teera Songatikamas
  • Publication number: 20180314331
    Abstract: A force transducer for an electronic device can be operated in a drive mode and a sense mode simultaneously. In particular, the force transducer can provide haptic output while simultaneously receiving force input from a user. The force transducer is primarily defined by a monolithic piezoelectric body, a ground electrode, a drive electrode, and a sense electrode. The ground electrode and the drive electrode each include multiple electrically-electrically conductive sheets that extend into the monolithic body; the electrically conductive sheets of the ground electrode and the drive electrode are interdigitally engaged. The sense electrode of the force transducer is typically disposed on an exterior surface of the monolithic body.
    Type: Application
    Filed: April 10, 2018
    Publication date: November 1, 2018
    Inventors: Joseph C. Doll, Pavan O. Gupta, Teera Songatikamas, Adam J. Monkowski
  • Patent number: 9949390
    Abstract: An electronic device may include a device housing and a display carried by the device housing. The electronic device may also include an actuator carried between the device housing and the display. The actuator may include an actuator body having an actuator bottom and a sidewall extending upwardly therefrom, a first guide member carried by the actuator bottom and spaced inwardly from adjacent portions of the sidewall to define a channel, and at least one coil carried by the sidewall. The actuator may also include a magnet being moveable within the channel and an actuator top coupled to the magnet and that includes a second guide member cooperating with the first guide member. The electronic device may also include a controller configured to drive the at least one coil to relatively move the actuator bottom and actuator top to thereby deform the display.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 17, 2018
    Assignee: APPLE INC.
    Inventors: Joseph C. Doll, Teera Songatikamas, Adam J. Monkowski, Pavan O. Gupta
  • Publication number: 20180090253
    Abstract: In an embodiment, a system comprises: a electromagnet having a core and a coil wrapped around the core; and a gap sensing circuit coupled to the coil, the gap sensing circuit operable to determine a gap distance between the electromagnet and a ferromagnetic target based on a change of inductance of the coil.
    Type: Application
    Filed: August 31, 2017
    Publication date: March 29, 2018
    Applicant: Apple Inc.
    Inventors: Teera Songatikamas, Joseph C. Doll, Matthew A. Bigarani
  • Publication number: 20180085786
    Abstract: In an embodiment, an electromagnetic reluctance actuator comprises: a core assembly including a plurality of magnetic cores arranged in a two-dimensional plane, each core comprised of ferromagnetic material and wound by a coil of conductive wire, the coils operable for producing magnetic flux density in response to electrical currents flowing in the coils, wherein the current in each coil flows in a direction that is opposite the currents flowing in adjacent coils; and an actuator, at least a portion of which comprises ferritic material magnetically coupled to the coils by a magnetic circuit, for producing mechanical force in response to the effect of magnetic flux on the portion, the portion of the actuator being mounted for movement relative to the core assembly.
    Type: Application
    Filed: August 31, 2017
    Publication date: March 29, 2018
    Applicant: Apple Inc.
    Inventors: Teera Songatikamas, Joseph C. Doll, Matthew A. Bigarani
  • Publication number: 20170357325
    Abstract: An electronic device configured to provide localized haptic feedback to a user on one or more regions or sections of a surface of the electronic device. A support structure is positioned below the surface, and one or more haptic actuators are coupled to the support structure. In some examples, the support structure is shaped or configured to amplify a response to a haptic actuator. When a haptic actuator is actuated, the support structure deflects, which causes the surface to bend or deflect at a location that substantially corresponds to the location of the activated haptic actuator. In some examples, prior to providing haptic feedback, at least one haptic actuator is electrically pre-stressed to place the haptic actuator(s) in a pre-stressed state. When haptic feedback is to be provided, at least one haptic actuator transitions from the pre-stressed state to a haptic output state to produce one or more deflections in the surface.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 14, 2017
    Inventors: Jui-Ming Yang, Nathan K. Gupta, Po-Jui Chen, Teera Songatikamas, Kyle J. Campiotti, Robert L. Sheridan, Xiaonan Wen, Xiaofan Niu, James E. Pedder
  • Patent number: 9689903
    Abstract: In an embodiment, a body of apparatus includes an opening, such as a V-shaped jaw, that deterministically locates a position of a wire in at least one dimension when the wire is placed in the opening. The apparatus also includes a plurality of sensors. At least one differential signal can be generated from signals from magnetic sensors, such as anisotropic magnetoresistance (AMR) sensors, of the plurality of sensors to cancel out common mode interference. An additional sensor of the plurality of sensors provides an output from which the location of the wire in another dimension is determined. The current flowing through the wire can be derived from at least the at least one differential signal and the location of the wire the other dimension.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: June 27, 2017
    Assignee: Analog Devices, Inc.
    Inventors: Yogesh Jayaraman Sharma, Nathan R. Carter, Teera Songatikamas, Brendan Cronin
  • Publication number: 20170153760
    Abstract: An electronic device can include gain-based error tracking for improved force sensing performance. The electronic device can comprise a plurality of force sensors (e.g., coupled to a touch sensor panel configured to detect an object touching the touch sensor panel). The plurality of force sensors can be configured to detect an amount of force with which the object touches the touch sensor panel. A processor can be coupled to the plurality of force sensors, and the processor can be configured to: in accordance with a determination that an acceleration characteristic of the electronic device is less than a threshold, determine an error metric for one or more of the plurality of force sensors, and in accordance with a determination that the acceleration characteristic of the electronic device is not less than the threshold, forgo determining the error metric for one or more of the plurality of force sensors.
    Type: Application
    Filed: April 1, 2016
    Publication date: June 1, 2017
    Inventors: Vinay CHAWDA, Vikrham GOWREESUNKER, Leah M. GUM, Teera SONGATIKAMAS
  • Publication number: 20160047846
    Abstract: In an embodiment, a body of apparatus includes an opening, such as a V-shaped jaw, that deterministically locates a position of a wire in at least one dimension when the wire is placed in the opening. The apparatus also includes a plurality of sensors. At least one differential signal can be generated from signals from magnetic sensors, such as anisotropic magnetoresistance (AMR) sensors, of the plurality of sensors to cancel out common mode interference. An additional sensor of the plurality of sensors provides an output from which the location of the wire in another dimension is determined. The current flowing through the wire can be derived from at least the at least one differential signal and the location of the wire the other dimension.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 18, 2016
    Inventors: Yogesh Jayaraman Sharma, Nathan R. Carter, Teera Songatikamas, Brendan Cronin