Patents by Inventor Gowan Soo KO

Gowan Soo KO 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).

  • High-efficiency AC-driven LED module
    Patent number: 8760073
    Abstract: A high-efficiency Alternating Current (AC)-driven Light-Emitting Diode (LED) module includes a full-wave rectification unit, an LED unit, at least one instantaneous current control unit, and at least one input power compensation unit. The full-wave rectification unit rectifies commercial supply voltage. The LED unit is configured such that LEDS connected in series are arranged separately or in groups. The instantaneous current control unit sequentially controls the sections of the LEDs connected in series. The input power compensation unit actively controls variations in input current and power attributable to variations in input voltage. The full-wave rectification unit, the LED unit, the instantaneous current control unit, and the input power compensation unit are formed of a one-board module (ASIC) or an Integrated Circuit (IC).
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: June 24, 2014
    Assignees: S&J Co., Ltd.
    Inventor: Gowan Soo Ko
  • HIGH-EFFICIENCY AC-DRIVEN LED MODULE
    Publication number: 20130026930
    Abstract: A high-efficiency Alternating Current (AC)-driven Light-Emitting Diode (LED) module includes a full-wave rectification unit, an LED unit, at least one instantaneous current control unit, and at least one input power compensation unit. The full-wave rectification unit rectifies commercial supply voltage. The LED unit is configured such that LEDS connected in series are arranged separately or in groups. The instantaneous current control unit sequentially controls the sections of the LEDs connected in series. The input power compensation unit actively controls variations in input current and power attributable to variations in input voltage. The full-wave rectification unit, the LED unit, the instantaneous current control unit, and the input power compensation unit are formed of a one-board module (ASIC) or an Integrated Circuit (IC).
    Type: Application
    Filed: August 31, 2011
    Publication date: January 31, 2013
    Inventor: Gowan Soo KO