Patents Assigned to Visam Development L.L.C.
  • Patent number: 8937582
    Abstract: A display includes a plurality of pixels and operates in a selected load period, a separate deselected load period, and a separate illumination period. Light may be generated by the plurality of pixels during the illumination period based on voltages stored in the plurality of pixels during the selected and deselected load periods. Methods of operating a display are also disclosed.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 20, 2015
    Assignee: Visam Development L.L.C.
    Inventor: Roger Green Stewart
  • Publication number: 20140009515
    Abstract: A display includes a plurality of pixels and operates in a selected load period, a separate deselected load period, and a separate illumination period. Light may be generated by the plurality of pixels during the illumination period based on voltages stored in the plurality of pixels during the selected and deselected load periods. Methods of operating a display are also disclosed.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: VISAM DEVELOPMENT L.L.C.
    Inventor: Roger Green Stewart
  • Patent number: 8531359
    Abstract: A circuit according to one embodiment includes a data line; a select line; a storage node coupled to the select line; a first transistor with a gate coupled to the select line, a first electrode thereof coupled to the storage node, and a second electrode thereof coupled to the data line; a second transistor with a gate coupled to the storage node, a first electrode thereof coupled to the data line; and a light emitting diode coupled to a second electrode of the second transistor. Additional systems and methods are claimed.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 10, 2013
    Assignee: Visam Development L.L.C.
    Inventor: Roger Stewart
  • Patent number: 8446394
    Abstract: A display driver according to one embodiment includes a digital to analog converter producing a current at a selected level an output of the digital to analog converter being coupleable to a data line of a display; and a voltage source being coupleable to the data line for precharging the data line. A method for precharging a data line of a display according to another embodiment includes determining a voltage level on a data line during a frame period; storing the voltage level; and prior to or during a subsequent frame period, precharging the data line voltage to a derivative of the stored voltage level. Additional systems and methods are claimed.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: May 21, 2013
    Assignee: Visam Development L.L.C.
    Inventor: Roger Stewart