Patents by Inventor Jong Jin Woo

Jong Jin Woo 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).

  • Power supply device of video display apparatus and method thereof
    Patent number: 7443390
    Abstract: A power supply device of a video display apparatus and a method thereof is capable of improving operation reliability of a video display apparatus, preventing erratic operation of the video display apparatus caused by higher harmonics and preventing erratic operation of other apparatus caused by unnecessary transmitted radiative wave. The power supply device can include a rectifying section for converting AC power into DC power, a harmonics suppressor for cutting off higher harmonics included in the DC power and a smoothing circuit for smoothing the higher harmonics cut-off DC power. A standby power supplier is for supplying the smoothed DC power to the video display apparatus as standby power, a main power supplier is for supplying the smoothed DC power to the video display apparatus as main power and a control unit is for controlling an operation of the harmonics suppressor.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: October 28, 2008
    Assignee: LG Electronics Inc.
    Inventors: Young Chuel Cha, Jong Jin Woo
  • Power supply device of video display apparatus and method thereof
    Patent number: 7126647
    Abstract: A power supply device of a video display apparatus and a method thereof is capable of improving operation reliability of a video display apparatus, preventing erratic operation of the video display apparatus caused by higher harmonics and preventing erratic operation of other apparatus caused by unnecessary transmitted radiative wave. The power supply device can include a rectifying section for converting AC power into DC power, a harmonic suppressor for cutting off higher harmonics included in the DC power and a smoothing circuit for smoothing the higher harmonics cut-off DC power. A standby power supplier is for supplying the smoothed DC power to the video display apparatus as standby power, a main power supplier is for supplying the smoothed DC power to the video display apparatus as main power and a control unit is for controlling an operation of the harmonic suppressor.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: October 24, 2006
    Assignee: LG Electronics Inc.
    Inventors: Young Chuel Cha, Jong Jin Woo
  • Power supply device of video display apparatus and method thereof
    Publication number: 20030214609
    Abstract: A power supply device of a video display apparatus and a method thereof is capable of improving operation reliability of a video display apparatus, preventing erratic operation of the video display apparatus caused by higher harmonics and preventing erratic operation of other apparatus caused by unnecessary transmitted radiative wave. The power supply device can include a rectifying section for converting AC power into DC power, a harmonic suppressor for cutting off higher harmonics included in the DC power and a smoothing circuit for smoothing the higher harmonics cut-off DC power. A standby power supplier is for supplying the smoothed DC power to the video display apparatus as standby power, a main power supplier is for supplying the smoothed DC power to the video display apparatus as main power and a control unit is for controlling an operation of the harmonic suppressor.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 20, 2003
    Applicant: LG ELECTRONICS INC.
    Inventors: Young Chuel Cha, Jong Jin Woo