Patents by Inventor Patrick A. Worfolk

Patrick A. Worfolk 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: 9367191
    Abstract: Devices and method are provided that facilitate improved input device performance. Specifically, the systems and methods are configured to identify a portion of an image of sensor values as corresponding to at least one sensed object in the sensing region, determine a polygon corresponding to the identified portion of the image, and determine a contact characterization of the at least one sensed object based on the polygon. The determination of a polygon corresponding to a sensed object facilitates improved contact characterization of the sensed object. For example, the determined polygon may be used to determine if the sensed object is actually more than one object. As a second example, the determined polygon may be used to determine the orientation of the sensed object. In addition, determined polygons may be used to more accurately track changes in the position of the sensed object.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: June 14, 2016
    Assignee: Synaptics Incorporated
    Inventors: Patrick Worfolk, Joel Jordan
  • Publication number: 20160162061
    Abstract: This disclosure generally provides an input device that includes a by-pass path for improving latency between a touch controller and a display driver. In one embodiment, the by-pass path directly connects the touch controller and display driver, thereby by-passing a host processor (e.g., a central processing unit (CPU) or graphic processing unit (GPU)) in the input device. By doing so, the input device can detect user input and update a display to reflect the user input faster than if the display driver had to wait until updated display frames are sent from the host processor. For example, the host processor may transmit touch data received from the touch controller to an application that uses the touch data to change the display. In some input devices, this process can take hundreds of milliseconds, which may be enough time for the user to notice a delay.
    Type: Application
    Filed: March 31, 2015
    Publication date: June 9, 2016
    Inventor: Patrick WORFOLK
  • Publication number: 20160070398
    Abstract: Methods, systems and devices are described for use with an electronic system. The device includes a pliable component having an input surface and a first plurality of sensor electrodes; a support substrate spaced apart from the pliable component; a second plurality of sensor electrodes disposed on a second substrate; a spacing layer disposed between the pliable component and the support substrate, the spacing layer configured to locally deform in response to a force applied to the input surface; and a shield electrode layer disposed between the first plurality and the second plurality of sensor electrodes.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 10, 2016
    Inventor: Patrick Worfolk
  • Publication number: 20150378491
    Abstract: A processing system for an input device having a sensing region overlapping an input surface and an array of sensor electrodes configured to form a plurality of proximity pixels and a plurality of force pixels. The processing system is configured to: determine a proximity image indicative of positional information for input objects; determine a force image indicative of local deflection of the input surface in response to force applied by the input objects; determine a respective group of proximity pixels from the proximity image corresponding to each input object; determine a respective group of force pixels from the force image corresponding to each determined group of proximity pixels; determine the position of each input object based on the determined groups of proximity pixels; and determine the force associated with each input object based on the determined groups of force pixels.
    Type: Application
    Filed: June 30, 2014
    Publication date: December 31, 2015
    Inventors: Patrick Worfolk, Vijay Venkatesh Mahalingam
  • Patent number: 9179495
    Abstract: A technique is disclosed to schedule frame transmissions in a wireless network utilizing scheduled TDMA by synchronizing clocks in repeater and backhaul access points.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: November 3, 2015
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Shimon B. Scherzer, Patrick A. Worfolk, Armin D. Haken, Subburajan Ponnuswamy, Ronen Vainish
  • Patent number: 9014203
    Abstract: A technique is disclosed to schedule frame transmissions in a wireless local area network. The network includes a plurality of stations configured to communicate on the same frequency channel with a plurality of access points. A central controller examines the transmission characteristics between the various stations and access points and identifies frames that may be simultaneously transmitted by a subset of the access points to their intended stations.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 21, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Shimon B. Scherzer, Patrick A. Worfolk
  • Patent number: 9001070
    Abstract: The embodiments described herein provide devices and methods that facilitate improved input devices. In one embodiment, an input device is configured to determine if a sensed object includes an occluded portion using an image representative of sensor values, determine a portion of the image corresponding to the sensed object, and approximate a boundary representation of the sensed object wherein if the sensed object does include the occluded portion, the boundary representation encompasses at least part of the occluded portion of the sensed object and at least part of a non-occluded portion of the sensed object. The determination of a boundary representation corresponding to a sensed object facilitates improved characterization of the sensed object. For example, the determined boundary representation may be used to more accurately track changes in the position of the sensed object as the sensed object moves out of the sensing region.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: April 7, 2015
    Assignee: Synaptics Incorporated
    Inventors: Patrick Worfolk, Joel Jordan
  • Publication number: 20150091872
    Abstract: A processing system includes a transmitter module, a receiver module, and a determination module. The transmitter module includes drives a first optical transmitter with a first optical coded signal based on a first code, and drives a second optical transmitter with a second optical coded signal based on a second code. The first code and the second code are non-orthogonal, and the first optical transmitter and the second optical transmitter transmit at overlapping times. The receiver module receives a resulting signal that includes effects corresponding to the first optical coded signal and the second optical coded signal. The determination module determines a first measurement between the first optical transmitter and the optical receiver, determines a second measurement between the second optical transmitter and the optical receiver, and determines positional information for an input object based on the first measurement and the second measurement.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 2, 2015
    Applicant: Synaptics Incorporated
    Inventor: Patrick Worfolk
  • Publication number: 20150084909
    Abstract: Methods, systems and devices are described for operating input device for an electronic system including a pliable component having an input surface and a first plurality of sensor electrodes configured to sense input objects in a sensing region of the input device. The input device also includes a support substrate including at least one second sensor electrode spaced apart from the pliable component, and a patterned force sensitive resistance (FSR) layer disposed between the first plurality of sensor electrodes and the at least one second sensor electrode.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 26, 2015
    Inventors: Patrick Worfolk, Pascale El Kallassi
  • Publication number: 20150054785
    Abstract: Devices and method are provided that facilitate improved input device performance. Specifically, the systems and methods are configured to identify a portion of an image of sensor values as corresponding to at least one sensed object in the sensing region, determine a polygon corresponding to the identified portion of the image, and determine a contact characterization of the at least one sensed object based on the polygon. The determination of a polygon corresponding to a sensed object facilitates improved contact characterization of the sensed object. For example, the determined polygon may be used to determine if the sensed object is actually more than one object. As a second example, the determined polygon may be used to determine the orientation of the sensed object. In addition, determined polygons may be used to more accurately track changes in the position of the sensed object.
    Type: Application
    Filed: October 1, 2014
    Publication date: February 26, 2015
    Inventors: Patrick Worfolk, Joel Jordan
  • Patent number: 8884916
    Abstract: Devices and method are provided that facilitate improved input device performance. Specifically, the systems and methods are configured to identify a portion of an image of sensor values as corresponding to at least one sensed object in the sensing region, determine a polygon corresponding to the identified portion of the image, and determine a contact characterization of the at least one sensed object based on the polygon. The determination of a polygon corresponding to a sensed object facilitates improved contact characterization of the sensed object. For example, the determined polygon may be used to determine if the sensed object is actually more than one object. As a second example, the determined polygon may be used to determine the orientation of the sensed object. In addition, determined polygons may be used to more accurately track changes in the position of the sensed object.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 11, 2014
    Assignee: Synaptics Incorporated
    Inventors: Patrick Worfolk, Joel Jordan
  • Publication number: 20140267143
    Abstract: A processing system for a transcapacitive input device configured to detect input objects in a sensing region of the input device includes a transmitter module including transmitter circuitry, a receiver module, and a determination module. The transmitter module is configured to simultaneously transmit, using a plurality of transmitter electrodes, a plurality of transmitter signals according to a plurality of significantly non-orthogonal digital codes. At least two codes of the plurality of significantly non-orthogonal digital codes are significantly non-orthogonal. The receiver module is configured to receive, with a plurality of receiver electrodes, a plurality of resulting signals. Each resulting signal of the plurality of resulting signals comprises multiple effects corresponding to multiple transmitter signals of the plurality of transmitter signals. The determination module is configured to determine object information for input in the sensing region using the plurality of resulting signals.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 18, 2014
    Applicant: SYNAPTICS INCORPORATED
    Inventors: Patrick Worfolk, Adam Schwartz, Mihai Bulea
  • Patent number: 8638112
    Abstract: An input device is disclosed, including a first drive electrode comprising a resistive material and a first sense electrode disposed proximate to the first drive electrode. The input device further includes a processing system which is coupled with the first drive electrode and the first sense electrode. In one embodiment, the processing system is configured for electrically driving a first end of the first drive electrode and electrically driving a second end of the first drive electrode to cause a change in a voltage gradient along a length of the first drive electrode. In such an embodiment, the change in the voltage gradient generates a first electrical signal in the first sense electrode. The processing system also acquires a first measurement of the first electrical signal and determines positional information along the length of the first drive electrode based upon the first measurement, wherein the positional information is related to an input object.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: January 28, 2014
    Assignee: Synaptics Incorporated
    Inventors: Shawn P. Day, Patrick Worfolk
  • Patent number: 8456443
    Abstract: A two-dimensional capacitive sensor device comprises first, second, and third sensor electrodes. The first sensor electrode has a varying width along a first direction, a maximum width at a first edge along the first direction, and a minimum width at a second edge along the first direction. The second sensor electrode has a varying width along the first direction and substantially identical widths at the first edge and second edge. The third sensor electrode has a varying width along the first direction, a minimum width at the first edge, and a maximum width at the second edge. The first, second, and third sensor electrodes have substantially equal surface area and are arranged in a first sensor cell with the second disposed between the first and third sensor electrodes. The two-dimensional capacitive sensor device comprises a plurality of sensor cells disposed in a repeated fashion in a single layer.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: June 4, 2013
    Assignee: Synaptics Incorporated
    Inventors: Mihai M. Bulea, Patrick Worfolk
  • Patent number: 8440920
    Abstract: A two-dimensional capacitive sensor device comprises a sensor substrate with a plurality of wedge shaped sensor cells arranged in a single-layer circular pattern proximal to the substrate. The plurality of wedge shaped sensor cells are arranged in a rotationally symmetric pattern about a center of the single-layer circular pattern. A sensor cell of the plurality of wedge shaped sensor cells comprises a first sensor electrode and a second sensor electrode separated by a border. The first and second sensor electrodes are configured for detecting changes in capacitance caused by one or more input objects. The first and second sensor electrodes become substantially thinner in width approaching the center of the single-layer circular pattern than at a distance further from the center. A sensor circuitry is communicatively coupled with the sensor electrodes of the sensor cell and the sensor circuitry is configured to interpret the changes in capacitance.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 14, 2013
    Assignee: Synaptics Incorporated
    Inventors: Mihai M. Bulea, Patrick Worfolk
  • Publication number: 20120146939
    Abstract: The embodiments described herein provide devices and methods that facilitate improved input devices. In one embodiment, an input device is configured to determine if a sensed object includes an occluded portion using an image representative of sensor values, determine a portion of the image corresponding to the sensed object, and approximate a boundary representation of the sensed object wherein if the sensed object does include the occluded portion, the boundary representation encompasses at least part of the occluded portion of the sensed object and at least part of a non-occluded portion of the sensed object. The determination of a boundary representation corresponding to a sensed object facilitates improved characterization of the sensed object. For example, the determined boundary representation may be used to more accurately track changes in the position of the sensed object as the sensed object moves out of the sensing region.
    Type: Application
    Filed: October 13, 2011
    Publication date: June 14, 2012
    Applicant: SYNAPTICS INCORPORATED
    Inventors: Patrick Worfolk, Joel Jordan
  • Publication number: 20120146938
    Abstract: Devices and method are provided that facilitate improved input device performance. Specifically, the systems and methods are configured to identify a portion of an image of sensor values as corresponding to at least one sensed object in the sensing region, determine a polygon corresponding to the identified portion of the image, and determine a contact characterization of the at least one sensed object based on the polygon. The determination of a polygon corresponding to a sensed object facilitates improved contact characterization of the sensed object. For example, the determined polygon may be used to determine if the sensed object is actually more than one object. As a second example, the determined polygon may be used to determine the orientation of the sensed object. In addition, determined polygons may be used to more accurately track changes in the position of the sensed object.
    Type: Application
    Filed: September 23, 2011
    Publication date: June 14, 2012
    Applicant: SYNAPTICS INCORPORATED
    Inventors: Patrick Worfolk, Joel Jordan
  • Publication number: 20120120017
    Abstract: The embodiments described herein provide devices and methods that facilitate improved performance. Specifically, the devices and methods provide the ability to determine object information for objects causing deflection of a surface of a capacitive sensor device. The devices and methods are configured to determine an estimated deflection response associated with a deflection of the at least one sensing electrode using a set of sensor values, where the deflection was caused by one or more objects in contact with the input surface. The estimated deflection response at least partially accounts for effects of capacitive coupling with the object(s) in contact with the input surface, Object information may then be generated using the estimated deflection response. Where the input device is used to direct an electronic system the object information may be used to facilitate a variety of interface actions on a variety of different electronic systems.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 17, 2012
    Applicant: SYNAPTICS INCORPORATED
    Inventors: Patrick Worfolk, Mihai M. Bulea
  • Publication number: 20110085532
    Abstract: A technique is disclosed to schedule frame transmissions in a wireless local area network. The network includes a plurality of stations configured to communicate on the same frequency channel with a plurality of access points. A central controller examines the transmission characteristics between the various stations and access points and identifies frames that may be simultaneously transmitted by a subset of the access points to their intended stations.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 14, 2011
    Inventors: Shimon B. Scherzer, Patrick A. Worfolk
  • Publication number: 20110062974
    Abstract: An input device is disclosed, including a first drive electrode comprising a resistive material and a first sense electrode disposed proximate to the first drive electrode. The input device further includes a processing system which is coupled with the first drive electrode and the first sense electrode. In one embodiment, the processing system is configured for electrically driving a first end of the first drive electrode and electrically driving a second end of the first drive electrode to cause a change in a voltage gradient along a length of the first drive electrode. In such an embodiment, the change in the voltage gradient generates a first electrical signal in the first sense electrode. The processing system also acquires a first measurement of the first electrical signal and determines positional information along the length of the first drive electrode based upon the first measurement, wherein the positional information is related to an input object.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 17, 2011
    Inventors: Shawn P. Day, Patrick Worfolk