Patents by Inventor David John Cowl

David John Cowl 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).

  • Method For Modulating A Micro-Led Display
    Publication number: 20140368561
    Abstract: A micro-LED display device and modulation scheme for applying image data to an imager. The micro-LED display, including a plurality of micro-LED pixels disposed in rows and columns array, may use a modulation scheme. The method includes using row write actions to write data to said rows of micro-LED pixels; and using spacing of row write actions to create grey scale modulation, wherein one spacing between sequential row write actions is at a first distance while another spacing between sequential row write actions is at a second distance greater than said first distance.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 18, 2014
    Inventors: Cheng-Hsing Liao, Chia-Jen Tsai, Edwin Lyle Hudson, David Charles Mcdonald, David John Cowl
  • Gray scale drive sequences for pulse width modulated displays
    Patent number: 8264507
    Abstract: Methods, apparatus, and systems for generating drive sequences for pulse width modulated displays are described. A pulse width modulated signal that includes a drive sequence of temporal segments that are activated and deactivated to produce a desired gray scale. The temporal segments can be non-binary, non-equally weighted. The drive sequence can also include at least two of the temporal segments are least significant bit segments and the other segments are higher order segments.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: September 11, 2012
    Assignee: Jasper Display Corporation
    Inventors: Edwin Lyle Hudson, David John Cowl
  • GRAY SCALE DRIVE SEQUENCES FOR PULSE WIDTH MODULATED DISPLAYS
    Publication number: 20120162293
    Abstract: Methods, apparatus, and systems for generating drive sequences for pulse width modulated displays are described. A pulse width modulated signal that includes a drive sequence of temporal segments that are activated and deactivated to produce a desired gray scale. The temporal segments can be non-binary, non-equally weighted. The drive sequence can also include at least two of the temporal segments are least significant bit segments and the other segments are higher order segments.
    Type: Application
    Filed: December 29, 2011
    Publication date: June 28, 2012
    Inventors: Edwin Lyle HUDSON, David John Cowl
  • Gray scale drive sequences for pulse width modulated displays
    Patent number: 8111271
    Abstract: Methods, apparatus, and systems for generating drive sequences for pulse width modulated displays are described. A pulse width modulated signal that includes a drive sequence of temporal segments that are activated and deactivated to produce a desired gray scale. The temporal segments can be non-binary, non-equally weighted. The drive sequence can also include at least two of the temporal segments are least significant bit segments and the other segments are higher order segments.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: February 7, 2012
    Assignee: Jasper Display Corporation
    Inventors: Edwin Lyle Hudson, David John Cowl