Patents by Inventor John Stephen Smith

John Stephen Smith 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: 10423265
    Abstract: An optical force sensor, which may be used as input to an electronic device. The optical force sensor may be configured to compensate for variations in temperature using two or more force-sensitive components that are formed from materials having different temperature- and strain-dependent responses.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: September 24, 2019
    Assignee: Apple Inc.
    Inventors: Sinan Filiz, James E. Pedder, Charley T. Ogata, John Stephen Smith, Dhaval Chandrakant Patel, Shin John Choi, Brian Q. Huppi, Christopher J. Butler, Martin P. Grunthaner
  • Patent number: 10379657
    Abstract: A device configured to sense a touch on a surface of the device. The device includes a cover and a force-sensing structure disposed below the cover. The force-sensing structure may be positioned below a display and used in combination with other force-sensing elements to estimate the force of a touch on the cover of a device.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: August 13, 2019
    Assignee: Apple Inc.
    Inventors: Sinan Filiz, Martin P. Grunthaner, John Stephen Smith, Charley T. Ogata, Christian M. Sauer, Shin John Choi, Christopher J. Butler, Steven J. Martisauskas
  • Patent number: 10353506
    Abstract: Structures and methods are disclosed for an electronic device having an input surface that uses dual sensors to measure forces applied to the input surface. The forces can be estimated over a greater range of values than would be possible with either sensor alone. A second sensor can be used after a first sensor has reached a limit. A first sensor can be a strain sensor and a second sensor a pressure sensor. Both sensors may be resistance based, with signals from both sensors can be combined and measured by processing circuitry. Each sensor type may be part of planar arrays disposed beneath the input surface.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 16, 2019
    Assignee: Apple Inc.
    Inventors: Michael Vosgueritchian, Sinan Filiz, James E. Pedder, John Stephen Smith, Saahil Mehra, Xiaofan Niu
  • Patent number: 10318089
    Abstract: Several techniques for driving a force sensor to reduce common mode offset are disclosed. The force sensor can include at least one set of individual strain sensitive structures formed on or in a surface of a substrate. Each set of individual strain sensitive structures can include one or more strain sensitive structures. At least one external resistor is operably connected in series between a first output of one or more transmitter channels and at least one set of strain sensitive structures. The external resistor(s) effectively increases the resistances of the strain sensitive structures to reduce the common mode offset. Additionally or alternatively, one or more signal generators may be connected to one or more transmitter channels. Each signal generator is configured to produce one or more signals that is/are designed to reduce common mode offset.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: June 11, 2019
    Assignee: Apple Inc.
    Inventors: John Stephen Smith, Manu Agarwal, Christian M. Sauer
  • Patent number: 10309846
    Abstract: A strain-responsive sensor incorporating a strain-sensitive element is disclosed. The strain-sensitive element includes a matched-pair of resistive structures disposed on opposite sides of a substrate. One resistive structure is coupled to a crossover, either a physical crossover or a soft crossover, such that current within the resistive structures of the matched pair flows in the same direction. In addition, one resistive structure of the matched pair has a different loop area than the other resistive structure.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 4, 2019
    Assignee: Apple Inc.
    Inventor: John Stephen Smith
  • Patent number: 10296123
    Abstract: A force sensing device can be included in a display. Noise produced by various sources can be injected into the force signals produced by the force sensing device. Example noise sources include, but are not limited to, the display, Johnson or Thermal noise from the force sensing device, system noise, and magnetically-coupled or background noise produced by ambient light sources. A sampling scheme that includes one or more noise cancelling techniques can be employed to reduce the amount of noise in the force signals.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: May 21, 2019
    Assignee: Apple Inc.
    Inventors: Manu Agarwal, John Stephen Smith
  • Patent number: 10275069
    Abstract: A portable electronic device includes a cover glass, one or more strain gauges operable to indicate force exerted on the cover glass based on deformation of the cover glass, a housing that defines a sway space gap into which the cover glass deforms when the force is exerted on the cover glass, and an incompressible fluid positioned in the sway space gap. The incompressible fluid allows deformation of the cover glass into the sway space gap when the force is exerted on the cover glass and maintains a constant volume under hydrostatic pressure.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: April 30, 2019
    Assignee: Apple Inc.
    Inventor: John Stephen Smith
  • Publication number: 20190095026
    Abstract: A portable electronic device includes a cover glass, one or more strain gauges operable to indicate force exerted on the cover glass based on deformation of the cover glass, a housing that defines a sway space gap into which the cover glass deforms when the force is exerted on the cover glass, and an incompressible fluid positioned in the sway space gap. The incompressible fluid allows deformation of the cover glass into the sway space gap when the force is exerted on the cover glass and maintains a constant volume under hydrostatic pressure.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 28, 2019
    Inventor: John Stephen Smith
  • Patent number: 10209830
    Abstract: A force sensor is disclosed. The force sensor includes a force-sensitive structure that compensates for temperature and other environmental changes through the use of a strain-sensitive element and one or more reference elements. An array of such force-sensitive structures forms a force-sensing layer.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 19, 2019
    Assignee: Apple Inc.
    Inventors: James E. Pedder, John Stephen Smith, Michael Vosgueritchian, Vikram Garg, Sinan Filiz, Miguel C. Christophy
  • Publication number: 20190025140
    Abstract: A strain-responsive sensor incorporating a strain-sensitive element is disclosed. The strain-sensitive element includes a matched-pair of resistive structures disposed on opposite sides of a substrate. One resistive structure is coupled to a crossover, either a physical crossover or a soft crossover, such that current within the resistive structures of the matched pair flows in the same direction. In addition, one resistive structure of the matched pair has a different loop area than the other resistive structure.
    Type: Application
    Filed: July 24, 2017
    Publication date: January 24, 2019
    Inventor: John Stephen Smith
  • Publication number: 20180364850
    Abstract: Structures and methods are disclosed for an electronic device having an input surface that uses dual sensors to measure forces applied to the input surface. The forces can be estimated over a greater range of values than would be possible with either sensor alone. A second sensor can be used after a first sensor has reached a limit. A first sensor can be a strain sensor and a second sensor a pressure sensor. Both sensors may be resistance based, with signals from both sensors can be combined and measured by processing circuitry. Each sensor type may be part of planar arrays disposed beneath the input surface.
    Type: Application
    Filed: June 16, 2017
    Publication date: December 20, 2018
    Inventors: Michael Vosgueritchian, Sinan Filiz, James E. Pedder, John Stephen Smith, Saahil Mehra, Xiaofan Niu
  • Patent number: 10139294
    Abstract: One or more strain sensors can be included in an electronic device. Each strain sensor includes a strain sensitive element and one or more strain signal lines connected directly to the strain sensitive element. The strain sensor(s) are used to detect a force that is applied to the electronic device, to a component in the electronic device, and/or to an input region or surface of the electronic device. A strain sensitive element is formed or processed to have a first gauge factor and the strain signal line(s) is formed or processed to have a different second gauge factor. Additionally or alternatively, a strain sensitive element is formed or processed to have a first conductance and the strain signal line(s) is formed or processed to have a different second conductance.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 27, 2018
    Assignee: Apple Inc.
    Inventors: Michael Vosgueritchian, John Stephen Smith, Sinan Filiz, James E. Pedder, Tingjun Xu, Xiaonan Wen
  • Patent number: 10141982
    Abstract: In an RFID system having at least one tag and at least one reader, a tag and a reader can, in one embodiment, use a pair of keys, known to both the tag and the reader, to restrict the interaction of the tag and the reader so that tags having the pair of keys interact only with readers that use the pair of keys.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: November 27, 2018
    Assignee: RUIZHANG TECHNOLOGY LIMITED COMPANY
    Inventor: John Stephen Smith
  • Patent number: 10133418
    Abstract: A strain-sensitive structure includes two resistive structures connected in series and formed on one surface of a substrate. One resistive structure is formed with a first trace arranged in first trace pattern. The other resistive structure is formed with a second trace arranged in a second trace pattern. The first resistive structure is configured to experience strain in response to an applied stress on the substrate. The second resistive structure is configured to experience less strain in response to the applied stress on the substrate compared to the first resistive structure. Together the strain-sensitive structure and the substrate form a force sensing layer that can be included in an electronic device.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: November 20, 2018
    Assignee: Apple Inc.
    Inventor: John Stephen Smith
  • Publication number: 20180275811
    Abstract: A device configured to sense a touch on a surface of the device. The device includes a cover and a force-sensing structure disposed below the cover. The force-sensing structure may be positioned below a display and used in combination with other force-sensing elements to estimate the force of a touch on the cover of a device.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 27, 2018
    Inventors: Sinan Filiz, Martin P. Grunthaner, John Stephen Smith, Charley T. Ogata, Christian M. Sauer, Shin John Choi, Christopher J. Butler, Steven J. Martisauskas
  • Patent number: 10055048
    Abstract: Disclosed herein is an electronic device having a force sensing device. The force sensing device receives a continuous force input which is translated into a discrete event. In order to more accurately determine the type of discrete event intended by a user, the electronic device is able to determine an amount of noise present in the electronic device and dynamically adjust force threshold values associated with the force sensing device.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: August 21, 2018
    Assignee: Apple Inc.
    Inventor: John Stephen Smith
  • Patent number: 10048789
    Abstract: A device configured to sense a touch on a surface of the device. The device includes a cover and a force-sensing structure disposed below the cover. The force-sensing structure may be positioned below a display and used in combination with other force-sensing elements to estimate the force of a touch on the cover of a device.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: August 14, 2018
    Assignee: Apple Inc.
    Inventors: Sinan Filiz, Martin P. Grunthaner, John Stephen Smith, Charley T. Ogata, Christian M. Sauer, Shin John Choi, Christopher J. Butler, Steven J. Martisauskas
  • Patent number: 10006820
    Abstract: A strain-responsive sensor incorporating a strain-sensitive element is disclosed. The strain-sensitive element includes a matched-pair of resistive structures disposed on opposite sides of a substrate. One resistive structure of the matched pair is coupled to a crossover, either a physical crossover or a soft crossover, such that current within the resistive structures of the matched pair flows in the same direction.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 26, 2018
    Assignee: Apple Inc.
    Inventors: Michael Vosgueritchian, Sinan Filiz, John Stephen Smith, Anshuman Bhuyan, James E. Pedder, Vikram Garg
  • Patent number: 10006828
    Abstract: Systems and methods for accurately and precisely measuring the resistance of a resistive sensor of a matched resistive sensor pair disposed on opposite surfaces of a substrate. Certain embodiments include coupled each sensor of the matched resistive sensors to a thermally-isolated pair of reference resistors contained within an integrated circuit so as to form a Wheatstone bridge. A controller associated with the integrated circuit can adjust the resistance of the thermally-isolated pair of reference resistors until the ratio of resistances matches to the ratio of resistances between the sensors of the matched pair.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: June 26, 2018
    Assignee: Apple Inc.
    Inventors: Manu Agarwal, John Stephen Smith, Sumant Ranganathan
  • Publication number: 20180157363
    Abstract: One or more transparent transistor force sensitive structures can be included in an electronic device. The transistor force sensitive structures(s) is used to detect a force that is applied to the electronic device, to a component in the electronic device, and/or to an input region of the electronic device. As one example, the one or more transparent transistor force sensitive structures may be included in a display stack of a display in an electronic device.
    Type: Application
    Filed: January 10, 2018
    Publication date: June 7, 2018
    Inventors: Michael Vosgueritchian, James E. Pedder, John Stephen Smith, Xiaonan Wen