Patents by Inventor John James Long

John James Long 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).

  • System and method to compensate for an induced voltage on a pixel drive electrode
    Patent number: 9336731
    Abstract: We describe a display system comprising an electrooptic display coupled to a display driver and including an induced voltage compensation circuit. The compensation circuit comprises a system to measure a voltage applied a common pixel electrode of the display, and one or both of: a system to measure a voltage swing on a pixel select line of the display, and a system to measure a change in voltage on the common pixel electrode due to a voltage induced on a pixel drive electrode of the display. The compensation circuit also includes a system to apply a voltage to the common pixel electrode, responsive to a combination of the measured applied voltage and one or both of the measured voltage swing and the measured change in voltage, to compensate for the induced voltage.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: May 10, 2016
    Assignee: FLEXENABLE LIMITED
    Inventors: John James Long, Stephen Markham, Gareth Husbands
  • DISPLAY SYSTEMS
    Publication number: 20140104155
    Abstract: We describe a display system comprising an electrooptic display coupled to a display driver and including an induced voltage compensation circuit. The compensation circuit comprises a system to measure a voltage applied a common pixel electrode of the display, and one or both of: a system to measure a voltage swing on a pixel select line of the display, and a system to measure a change in voltage on the common pixel electrode due to a voltage induced on a pixel drive electrode of the display. The compensation circuit also includes a system to apply a voltage to the common pixel electrode, responsive to a combination of the measured applied voltage and one or both of the measured voltage swing and the measured change in voltage, to compensate for the induced voltage.
    Type: Application
    Filed: April 13, 2012
    Publication date: April 17, 2014
    Applicant: PLASTIC LOGIC LIMITED
    Inventors: John James Long, Stephen Markham, Gareth Husbands