Patents by Inventor Sun Geon YOO

Sun Geon YOO 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).

  • Lamp control device
    Patent number: 10051695
    Abstract: A lamp control device includes a converter configured to provide an output voltage and an internal voltage; a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated in correspondence to memory values which are set in advance.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: August 14, 2018
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Sung Hwan Kim, Joo Wan Ha, Sun Geon Yoo, Hai Feng Jin, Ju Hyun Lee, Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Ju Pyo Hong
  • Lamp control device
    Patent number: 9986616
    Abstract: A lamp control device includes a lamp including an LED module which has a plurality of LED channels; and a controller configured to detect respective feedback voltages of the plurality of LED channels, and determine, when at least any one feedback voltage among the feedback voltages is retained to be lower than a predetermined reference voltage and a generation count of an over voltage protection signal reaches a predetermined reference count, an LED channel corresponding to the feedback voltage, as an open.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: May 29, 2018
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Ju Pyo Hong, Joo Wan Ha, Hai Feng Jin, Se Won Lee, Wanyuan Qu, Sung Hwan Kim, Sun Geon Yoo, Byeong Ho Jeong, Ju Hyun Lee
  • LAMP CONTROL DEVICE
    Publication number: 20170359868
    Abstract: A lamp control device includes a converter configured to provide an output voltage and an internal voltage; a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated in correspondence to memory values which are set in advance.
    Type: Application
    Filed: December 30, 2015
    Publication date: December 14, 2017
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Sung Hwan KIM, Joo Wan HA, Sun Geon YOO, Hai Feng JIN, Ju Hyun LEE, Wanyuan QU, Se Won LEE, Byeong Ho JEONG, Ju Pyo HONG
  • LAMP CONTROL DEVICE
    Publication number: 20170303352
    Abstract: A lamp control device includes a lamp including an LED module which has a plurality of LED channels; and a controller configured to detect respective feedback voltages of the plurality of LED channels, and determine, when at least any one feedback voltage among the feedback voltages is retained to be lower than a predetermined reference voltage and a generation count of an over voltage protection signal reaches a predetermined reference count, an LED channel corresponding to the feedback voltage, as an open.
    Type: Application
    Filed: December 30, 2015
    Publication date: October 19, 2017
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Ju Pyo HONG, Joo Wan HA, Hai Feng JIN, Se Won LEE, Wanyuan QU, Sung Hwan KIM, Sun Geon YOO, Byeong Ho JEONG, Ju Hyun LEE