Patents by Inventor Bong Sup SHIN

Bong Sup SHIN 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).

  • AC-direct drive-type LED driving device
    Patent number: 9439254
    Abstract: The present invention relates to a device for driving LEDs and, more specifically, to an AC-direct drive-type LED driving device, capable of sequentially driving LEDs connected in series in reverse order by starting with an LED located at the end until a certain size of power is supplied, and sequentially driving the LEDs connected in series in order if the certain size of power is supplied, rather than measuring the size of a rectified power and sequentially driving the LEDs connected in series based on the measured size of the power; thereby equalizing the power consumption of all the LEDs connected in series to thereby equalize the life span of the LEDs regardless of the serial connection order of the LEDs and unifying the brightness of all the LEDs connected in series.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: September 6, 2016
    Inventor: Bong Sup Shin
  • AC-DIRECT DRIVE-TYPE LED DRIVING DEVICE
    Publication number: 20150237697
    Abstract: The present invention relates to a device for driving LEDs and, more specifically, to an AC-direct drive-type LED driving device, capable of sequentially driving LEDs connected in series in reverse order by starting with an LED located at the end until a certain size of power is supplied, and sequentially driving the LEDs connected in series in order if the certain size of power is supplied, rather than measuring the size of a rectified power and sequentially driving the LEDs connected in series based on the measured size of the power; thereby equalizing the power consumption of all the LEDs connected in series to thereby equalize the life span of the LEDs regardless of the serial connection order of the LEDs and unifying the brightness of all the LEDs connected in series.
    Type: Application
    Filed: August 13, 2013
    Publication date: August 20, 2015
    Inventor: Bong Sup SHIN