Patents by Inventor Christopher C. Keeser

Christopher C. Keeser 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).

  • Digital driving circuits, methods and systems for liquid crystal display devices
    Patent number: 8773420
    Abstract: A method may include controlling a display device in at least first mode by varying a correlation between display driver signals applied across display segments within the display device; wherein the display driver signals vary between substantially only two levels, and a display segment is activated when an average voltage magnitude across the segment over a time period exceeds a threshold value.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 8, 2014
    Assignee: Cypress Semiconductor Corporation
    Inventors: David Van Ess, Christopher C. Keeser, Robert L. Murphy, David G. Wright
  • Digital driving circuits, methods and systems for liquid crystal display devices
    Patent number: 8704818
    Abstract: A method may include generating display driver signals that vary between only two levels and applying the display driver signals to opposing electrodes of a display segment within a display device. The method varies a correlation between the display driver signals to select or de-select the display segment based on an average voltage magnitude across the display segment over a time period. The display segment is activated when the average voltage magnitude exceeds a threshold value.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: April 22, 2014
    Inventors: David Van Ess, Christopher C. Keeser, Robert L. Murphy, David G. Wright
  • DIGITAL DRIVING CIRCUITS, METHODS AND SYSTEMS FOR LIQUID CRYSTAL DISPLAY DEVICES
    Publication number: 20130141416
    Abstract: A method may include generating display driver signals that vary between only two levels and applying the display driver signals to opposing electrodes of a display segment within a display device. The method varies a correlation between the display driver signals to select or de-select the display segment based on an average voltage magnitude across the display segment over a time period. The display segment is activated when the average voltage magnitude exceeds a threshold value.
    Type: Application
    Filed: January 31, 2013
    Publication date: June 6, 2013
    Inventors: David Van Ess, Christopher C. Keeser, Robert L. Murphy, David G. Wright
  • DIGITAL DRIVING CIRCUITS, METHODS AND SYSTEMS FOR LIQUID CRYSTAL DISPLAY DEVICES
    Publication number: 20110169814
    Abstract: A method may include controlling a display device in at least first mode by varying a correlation between display driver signals applied across display segments within the display device; wherein the display driver signals vary between substantially only two levels, and a display segment is activated when an average voltage magnitude across the segment over a time period exceeds a threshold value.
    Type: Application
    Filed: January 14, 2011
    Publication date: July 14, 2011
    Applicant: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: David Van Ess, Christopher C. Keeser, Robert L. Murphy, David G. Wright