Patents by Inventor Kill Soo Seo

Kill Soo Seo 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).

  • Apparatus for controlling the operation of an LED, and method for controlling drive current thereof
    Patent number: 9060405
    Abstract: The present invention relates to an apparatus for controlling the operation of an LED and to a method for controlling the drive current thereof. More particularly, the present invention relates to an apparatus for controlling the operation of an LED, which is capable of driving a direct current-operated LED module or an alternating current-operated LED module using alternating current power, and to a method for controlling the drive current of the apparatus. According to the present invention, the drive current of an LED array can be output in the form of a sine wave by a constant-current regulation or constant-power regulation even when input voltage varies, thus suppressing harmonics, improving the power factor, minimizing flicker, and preventing a temperature increase in the LED array and in an LED operation control circuit.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: June 16, 2015
    Assignee: Korea Electrotechnology Research Institute
    Inventors: Jong Hyun Kim, Myung Hyo Ryu, Ju Won Baek, Kill Soo Seo, Hyoung Woo Kim
  • APPARATUS FOR CONTROLLING THE OPERATION OF AN LED, AND METHOD FOR CONTROLLING DRIVE CURRENT THEREOF
    Publication number: 20140097763
    Abstract: The present invention relates to an apparatus for controlling the operation of an LED and to a method for controlling the drive current thereof. More particularly, the present invention relates to an apparatus for controlling the operation of an LED, which is capable of driving a direct current-operated LED module or an alternating current-operated LED module using alternating current power, and to a method for controlling the drive current of the apparatus. According to the present invention, the drive current of an LED array can be output in the form of a sine wave by a constant-current regulation or constant-power regulation even when input voltage varies, thus suppressing harmonics, improving the power factor, minimizing flicker, and preventing a temperature increase in the LED array and in an LED operation control circuit.
    Type: Application
    Filed: November 25, 2013
    Publication date: April 10, 2014
    Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jong Hyun Kim, Myung Hyo Ryu, Ju Won Baek, Kill Soo Seo, Hyoung Woo Kim