Patents by Inventor Michael P. Coulson

Michael P. Coulson 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: 8698769
    Abstract: A dual mode capacitive touch panel includes a sensor substrate, an electrode layer comprising an array of sensor electrodes arranged over the sensor substrate, the array of sensor electrodes including a plurality of drive electrodes and a plurality of sense electrodes, each sensor electrode corresponding to a location on the sensor substrate, and a shield layer arranged over and spaced apart from the electrode layer. The shield layer includes a predetermined resistance that permits transmission of an electric field at a first frequency and prevents transmission of an electric field at a second frequency, wherein a spacing between the shield layer and the electrode layer is deformable as a result of a force applied to the shield layer due to a user touch, wherein the deformation alters a capacitance between the shield layer and a sensor electrode of the array.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: April 15, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Michael P. Coulson, Christopher J. Brown
  • Publication number: 20130033450
    Abstract: A dual mode capacitive touch panel includes a sensor substrate, an electrode layer comprising an array of sensor electrodes arranged over the sensor substrate, the array of sensor electrodes including a plurality of drive electrodes and a plurality of sense electrodes, each sensor electrode corresponding to a location on the sensor substrate, and a shield layer arranged over and spaced apart from the electrode layer. The shield layer includes a predetermined resistance that permits transmission of an electric field at a first frequency and prevents transmission of an electric field at a second frequency, wherein a spacing between the shield layer and the electrode layer is deformable as a result of a force applied to the shield layer due to a user touch, wherein the deformation alters a capacitance between the shield layer and a sensor electrode of the array.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Michael P. Coulson, Christopher J. Brown
  • Patent number: 8330093
    Abstract: An ambient light sensor includes a first stack of at least two photodiodes, wherein a cathode of one of the at least two photodiodes is electrically connected to an anode of another of the at least two photodiodes. The ALS further includes a bias source for providing a bias voltage to the first stack, and at least one switch electrically connected to the first stack. The at least one switch is operative to periodically apply the bias voltage to and remove the bias voltage from the first diode stack.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: December 11, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Michael P. Coulson, Hajime Washio, Benjamin J. Hadwen, Sunay Shah
  • Publication number: 20120038597
    Abstract: A display device includes a liquid crystal display having a plurality of pixels, each pixel having a corresponding pixel electrode. Each pixel also includes a volatile memory (VM) cell and a non-volatile memory (NVM) cell. The VM cell includes a VM cell input for receiving data to be stored in the VM cell and a VM cell output for outputting data stored in the VM cell. The NVM cell includes an NVM program input operatively coupled to the VM cell output, and an NVM data output for providing data stored in the first NVM cell to the pixel electrode. The display device also includes programming logic operatively coupled to each of the plurality of pixels, wherein the programming logic is configured to substantially simultaneously program each pixel's first NVM cell with data provided by each pixel's VM cell.
    Type: Application
    Filed: August 10, 2010
    Publication date: February 16, 2012
    Inventors: Michael P. COULSON, Sunay Shah, Benjamin J. Hadwen
  • Publication number: 20110114824
    Abstract: An ambient light sensor includes a first stack of at least two photodiodes, wherein a cathode of one of the at least two photodiodes is electrically connected to an anode of another of the at least two photodiodes. The ALS further includes a bias source for providing a bias voltage to the first stack, and at least one switch electrically connected to the first stack. The at least one switch is operative to periodically apply the bias voltage to and remove the bias voltage from the first diode stack.
    Type: Application
    Filed: January 25, 2010
    Publication date: May 19, 2011
    Inventors: Michael P. Coulson, Hajime Washio, Benjamin J. Hadwen, Sunay Shah