Patents Assigned to Ascend Visual System, Inc.
  • Scaling-friendly architecture for LED (backlight) drivers to minimize PCB trace lines
    Patent number: 7855702
    Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: December 21, 2010
    Assignee: Ascend Visual System, Inc.
    Inventors: Hsin Chiang Huang, Chang Kuang Chung
  • Dynamic LED matrix lighting control using scanning architecture
    Patent number: 7737926
    Abstract: This invention is a new LED back lighting architecture that each individual LED is controlled by its associated LED drive cell. The LEDs are sequentially connected one after another. A host controller transmits image displaying signals by signal scanning-flows. The current flow for controlling each LED's color lighting is by either binary current flow control or two-steps progressive current flow control.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: June 15, 2010
    Assignee: Ascend Visual System, Inc.
    Inventors: Hsin Chiang Huang, Chang Kuang Chung
  • Self-calibrated integration method of light intensity control in LED backlighting
    Patent number: 7569997
    Abstract: This invention is an LED lighting intensity control by subdivision of PWM intervals to resolve the wavelength and luminance shifting problems that are caused by increasing heat and junction temperatures.
    Type: Grant
    Filed: May 6, 2007
    Date of Patent: August 4, 2009
    Assignee: Ascend Visual System, Inc.
    Inventors: Hsin Chiang Huang, Chang Kuang Chung