Patents by Inventor Bong Chool Kim

Bong Chool Kim 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).

  • Patent number: 6724357
    Abstract: There is provided an apparatus and a method for driving a surface discharge PDP in which a driving voltage supply frame for displaying an image is constructed of N sub-fields, and each sub-field is composed of an erasing period, an addressing period and a sustaining period, the sustaining period alternately providing a predetermined sustaining pulse to first and second electrodes constructing the display panel.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: April 20, 2004
    Assignee: UPD Corporation
    Inventors: Bong Chool Kim, Gyun Chae
  • Patent number: 6646387
    Abstract: An apparatus of a sustain driver in an AC-type plasma display panel having an energy recovery unit, comprising: a first drive unit for driving one electrode of a panel capacitor to a sustain voltage or a ground voltage; a second drive unit for driving another electrode of the panel capacitor to a sustain voltage or a ground voltage; and a common energy recovery unit. The common energy recovery unit includes: an inductor connected to the one electrode of the panel capacitor and form a L-C resonance circuit with the panel capacitor; a first and second external capacitors connected in series between the power source of the sustain voltage and the ground; and a switch unit for selectively switching the L-C resonance circuit and the first and second external capacitors during the charge and discharge operation of the panel capacitor.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: November 11, 2003
    Assignee: Ultra Plasma Display Corporation
    Inventors: Gyun Chae, Beom Gu Kang, Bong Chool Kim
  • Publication number: 20030006712
    Abstract: Disclosed is an apparatus of a sustain driver in an AC-type plasma display panel having an energy recovery unit, comprising: a first drive unit for driving one electrode of a panel capacitor to a sustain voltage or a ground voltage; a second drive unit for driving another electrode of the panel capacitor to a sustain voltage or a ground voltage; and a common energy recovery unit. The common energy recovery unit includes: an inductor connected to the one electrode of the panel capacitor and form a L-C resonance circuit with the panel capacitor; a first and second external capacitors connected in series between the power source of the sustain voltage and the ground; and a switch unit for selectively switching the L-C resonance circuit and the first and second external capacitors during the charge and discharge operation of the panel capacitor.
    Type: Application
    Filed: July 1, 2002
    Publication date: January 9, 2003
    Inventors: Gyun Chae, Beom Gu Kang, Bong Chool Kim
  • Publication number: 20020180667
    Abstract: Each of sub-field of a plasma display panel have a total writing period for total erasing, an address period for erasing selectively, and a sustaining period for supplying a sustaining pulse. A writing pulse with adjusted voltage level and pulse width for total erasing is supplied only once during the total writing period. So, the contrast is improved.
    Type: Application
    Filed: May 30, 2002
    Publication date: December 5, 2002
    Inventor: Bong Chool Kim
  • Publication number: 20020126069
    Abstract: There is provided a method for driving an AC surface discharge PDP which includes a plurality of scan electrodes driven, being divided into upper and lower groups, a plurality of sustain electrodes respectively corresponding to the scan electrodes and being arranged on the same plane in parallel with the scan electrodes and a plurality of first and second address electrodes being divided into upper and lower parts and intersecting the scan electrodes and the sustain electrodes having predetermined spaces therebetween, the PDP having a discharge cell formed at an intersection where the scan electrodes and sustain electrodes intersect the first and second address electrodes.
    Type: Application
    Filed: January 9, 2002
    Publication date: September 12, 2002
    Applicant: UPD Corporation
    Inventors: Bong Chool Kim, Beom Gu Kang, Gyun Chae
  • Publication number: 20020093470
    Abstract: There is provided an apparatus and a method for driving a surface discharge PDP in which a driving voltage supply frame for displaying an image is constructed of N sub-fields, and each sub-field is composed of an erasing period, an addressing period and a sustaining period, the sustaining period alternately providing a predetermined sustaining pulse to first and second electrodes constructing the display panel.
    Type: Application
    Filed: January 9, 2002
    Publication date: July 18, 2002
    Applicant: UPD Corporation
    Inventors: Bong Chool Kim, Gyun Chae