Patents by Inventor Ki Duck Cho

Ki Duck Cho 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: 8044883
    Abstract: A method of driving a plasma display apparatus is provided. The method of driving the plasma display apparatus includes applying a first pulse to a first electrode, applying a second pulse to a second electrode after the application of the first pulse, and applying a falling ramp pulse to the first electrode after the application of the second pulse.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: October 25, 2011
    Assignee: LG Electronics Inc.
    Inventors: Kyoung Jin Jung, Ki Duck Cho, Sung Im Lee, Min Soo Kim
  • Patent number: 7812788
    Abstract: The present invention relates to a plasma display panel, in particular to a plasma display apparatus and driving method of same, wherein the bightness of sustain light generated by a sustain pulse by performing floating either a scan electrode or a sustain electrode during a sustain period, thereby increasing the driving efficiency of the plasma display apparatus. A plasma display apparatus according to an aspect of the present invention comprises a plasma display panel comprising a first electrode and a second electrode; and a controller for applying an auxiliary discharge pulse to the second electrode, when a sustain pulse is applied to the first electrode, during a sustain period.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: October 12, 2010
    Assignee: LG Electronics Inc.
    Inventors: Kyoung Jin Jung, Ki Duck Cho, Yoon Chang Choi, Min Soo Kim
  • Patent number: 7602355
    Abstract: The present invention relates to a plasma display panel, and more particularly, to a plasma display apparatus and driving method thereof, in which power consumption can be reduced and contrast can be improved, so that a high contrast image can be displayed. The plasma display apparatus according to the present invention comprises a scan electrode, a sustain electrode, and a controller for applying a rising waveform and a falling waveform to the scan electrode in a reset period of a first subfield of a frame and applying the falling waveform to the scan electrode when a first time elapses, after a first sustain voltage is applied to the scan electrode during a sustain period. The sustain electrode is applied with a second sustain voltage when a second time is elapsed, after the first sustain voltage is applied.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: October 13, 2009
    Assignee: LG Electronics Inc.
    Inventors: Sung Im Lee, Ki-Duck Cho, Min Soo Kim, Kyoung Jin Jung
  • Patent number: 7561151
    Abstract: A method of driving a plasma display device having a plurality of scan electrode lines divided into the m (m is an integer greater than 2) number of groups, includes: applying p (p is a natural number greater than 1) number of first reset pulse having a first voltage to the scan electrode lines included in more than one group among the m number of groups during a specific frame; and simultaneously applying q (q is a natural number greater than 1) number of second reset pulse having a second voltage different from the first voltage to the second electrode line included in the rest groups except for the more than one group during the specific frame.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: July 14, 2009
    Assignee: LG Electronics Inc.
    Inventors: Ki Duck Cho, Min Soo Kim, Won Jae Kim, Kyoung Jin Jung, Byung Hyun Kim
  • Patent number: 7477215
    Abstract: A plasma display apparatus and a method of driving the same are disclosed. According to the plasma display apparatus and the method of driving the same, when a plasma display panel (PDP) displays a screen with one frame comprised of a plurality of sub-fields including reset periods, different reset pulses are supplied to a first scan electrode and a second scan electrode in the reset period of an arbitrary sub-field among the plurality of sub-fields.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: January 13, 2009
    Assignee: LG Electronics Inc.
    Inventors: Min Soo Kim, Ki-Duck Cho, Kyung Ryeol Shim, Won Jae Kim
  • Patent number: 7471262
    Abstract: A method of driving a plasma display panel for generating a stable sustain discharge is disclosed. In the method, first sustaining pulses are applied to the scan electrodes such that a sustain discharge can be generated. Second sustaining pulse are applied to the sustain electrodes in such a manner to be alternated with the first sustaining pulses. A stabilization pulse is applied to an address electrode provided alternately with the scan electrode for each discharge cell such that said sustain discharge can be generated via a surface-discharge area of a voltage close curve.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: December 30, 2008
    Assignee: LG Electronics Inc.
    Inventors: Won Jae Kim, Min Soo Kim, Ki Duck Cho, Dae Sik Cho
  • Publication number: 20060132389
    Abstract: The present invention relates to a plasma display panel, and more particularly, to a plasma display apparatus and driving method thereof, in which they can enhance the capability of representing low gray levels.
    Type: Application
    Filed: November 29, 2005
    Publication date: June 22, 2006
    Inventors: Kyoung Jung, Ki-Duck Cho, Sung Lee, Yoonchang Choi
  • Publication number: 20060114186
    Abstract: The present invention relates to a plasma display panel, and more particularly, to a plasma display apparatus and driving method thereof, in which power consumption can be reduced and contrast can be improved, so that a high contrast image can be displayed. The plasma display apparatus according to the present invention comprises a scan electrode, a sustain electrode, and a controller for applying a rising waveform and a falling waveform to the scan electrode in a reset period of a first subfield of a frame and applying the falling waveform to the scan electrode when a first time elapses, after a first sustain voltage is applied to the scan electrode during a sustain period. The sustain electrode is applied with a second sustain voltage when a second time is elapsed, after the first sustain voltage is applied.
    Type: Application
    Filed: November 30, 2005
    Publication date: June 1, 2006
    Inventors: Sung Lee, Ki-Duck Cho, Min Kim, Kyoung Jung
  • Publication number: 20060103599
    Abstract: A plasma display panel apparatus and its driving method are disclosed. When temperature of a panel or an ambient temperature of the panel is higher than a reference temperature, the number of reset rising waveforms applied during one frame is increased. Accordingly, degradation of the panel contrast according to a set-up discharge can be prevented, and a discharge can stably occur at a high temperature.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 18, 2006
    Inventors: Ki Duck Cho, Min Kim, Won Kim, Kyoung Jung
  • Patent number: 6744215
    Abstract: Control method and system for improving the color temperature of an alternating current (AC) plasma display panel (PDP) are disclosed. The method and apparatus controls the color temperature of an AC PDP, and can maintain high luminance and luminous efficiency even in an XGA class discharge cell as well as a VGA class discharge cell because a discharge space is dispersed from a sustain electrode to the direction of a writing electrode, to thus obtain strong sustain discharge having a large discharge space when a pulse is simultaneously applied to the writing electrode while a sustain pulse waveform is applied during a sustain period of the AC PDP, improves only the bright of a blue cell whose luminance is relatively low regardless of a cell structure because different pulses can be independently applied to the writing electrodes of red, blue, and green cells during the application of the sustain pulse, and controls a color temperature by increasing the luminance of the blue and green cells.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: June 1, 2004
    Assignee: Yeint Co., Ltd.
    Inventors: Heung Sik Tae, Sung Il Chien, Ki Duck Cho
  • Publication number: 20030117346
    Abstract: Control method and system for improving the color temperature of an alternating current (AC) plasma display panel (PDP) are disclosed. The method and apparatus controls the color temperature of an AC PDP and can maintain high luminance and luminous efficiency even in an XGA class discharge cell as well as a VGA class discharge cell because a discharge space is dispersed from a sustain electrode to the direction of a writing electrode, to thus obtain strong sustain discharge having a large discharge space when a pulse is simultaneously applied to the writing electrode while a sustain pulse waveform is applied during a sustain period of the AC PDP improves only the bright of a blue cell whose luminance is relatively low regardless of a cell structure because different pulses can be independently applied to the writing electrodes of red, blue, and green cells during the application of the sustain pulse, and controls a color temperature by increasing the luminance of the blue and green cells.
    Type: Application
    Filed: January 31, 2003
    Publication date: June 26, 2003
    Inventors: Heung Sik Tae, Sung II Chien, Ki Duck Cho