Patents by Inventor Soo Seok Sim
Soo Seok Sim 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).
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Patent number: 8471784Abstract: This invention relates to a driving apparatus of a plasma display panel that is capable of being operated stable, regardless of temperature. A driving apparatus of a plasma display panel according to the present invention includes a panel having a scanning electrode for receiving a scanning pulse in an address period and an address electrode for receiving a date pulse synchronized with the scanning pulse in the address period; and a pulse width controller for changing the width of the scanning pulse when the panel is driven at a low temperature.Type: GrantFiled: March 30, 2007Date of Patent: June 25, 2013Assignee: LG Electronics Inc.Inventors: Soo Seok Sim, Won Tae Kim, Bon Cheol Koo, Seong Ho Kang
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Patent number: 7760159Abstract: The present invention relates to an apparatus and method for driving a plasma display panel, and more particularly, to a scan drive apparatus and method of a plasma display panel. The present invention includes a data conversion unit converting video data to converted video data suitable for the PDP, a subfield mapping unit mapping a subfield corresponding to the converted video data, a data comparison unit computing a size of a displacement current by comparing video data of a cell bundle including at least one cell situated on a specific scan line to video data of a cell bundle situated in vertical and horizontal directions of the cell bundle according to each scan type of a plurality of scan types, and a scan sequence decision unit deciding a scan sequence according to the scan type having a small displacement current inputted from the data comparison unit.Type: GrantFiled: June 20, 2005Date of Patent: July 20, 2010Assignee: LG Electronics Inc.Inventors: Takuya Watanabe, Seong Ho Kang, Sang Jin Yoon, Soo Seok Sim
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Patent number: 7714805Abstract: Disclosed therein a method of driving a plasma display panel, which can improve display quality. The method is separately driven by a data driving period for supplying a driving waveform and a preliminary period for raising voltages for supplying the driving waveform up to a desired voltage, in order to display an image in each discharge cell, wherein a waveform supplied to electrodes during a sustain period of the data driving period is different from a waveform supplied to the electrodes during a sustain period of the preliminary period. The method does not create a sustain discharge during a sustain period and prevents an afterimage caused by a previous state when the PDP is turned on from being displayed, improving display quality. Moreover, charges within a discharge cell are eliminated by supplying a ground voltage to electrodes for 1 to 3 seconds, preferably 2 seconds, before a data driving waveform is supplied.Type: GrantFiled: December 29, 2004Date of Patent: May 11, 2010Assignee: LG Electronics Inc.Inventors: Jung Gwan Han, Soo Seok Sim
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Patent number: 7557777Abstract: A method and apparatus for adjusting a gain for each position of a plasma display panel for improving a brightness uniformity of a picture field is disclosed. In the method and apparatus, a gain of data to be displayed at a first position of a field of the plasma display panel is controlled into a first gain value. A gain of data to be displayed at a second position of said field is controlled into a second gain value.Type: GrantFiled: June 18, 2004Date of Patent: July 7, 2009Assignee: LG Electronics Inc.Inventors: Hyun Mok Yu, Soo Seok Sim
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Patent number: 7538748Abstract: This invention relates to a driving apparatus of a plasma display panel that is capable of being operated stable, regardless of temperature. A driving apparatus of a plasma display panel according to the present invention includes a panel having a scanning electrode for receiving a scanning pulse in an address period and an address electrode for receiving a date pulse synchronized with the scanning pulse in the address period; and a pulse width controller for changing the width of the scanning pulse when the panel is driven at a low temperature.Type: GrantFiled: March 30, 2007Date of Patent: May 26, 2009Assignee: LG Electronics Inc.Inventors: Soo Seok Sim, Won Tae Kim, Bon Cheol Koo, Seong Ho Kang
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Patent number: 7425935Abstract: An apparagraph and method of driving a plasma display panel that enables the display of an image wherein contour noise is minimized and that prevents flickering mal-discharge and mis-discharge when the plasma display panel is being driven at high/low temperature is provided. The method includes detecting a drive temperature of a panel, mapping data using a first sub-field pattern mapping when the panel is driven at a low temperature or a high temperature, and mapping the data using a second sub-field pattern mapping different from the first sub-field pattern mapping when the panel is driven at a temperature between the low temperature and the high temperature.Type: GrantFiled: October 14, 2004Date of Patent: September 16, 2008Assignee: LG Electronics, Inc.Inventors: Young Dae Kim, Soo Seok Sim
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Patent number: 7215316Abstract: This invention relates to a driving apparatus of a plasma display panel that is capable of being operated stable, regardless of temperature. A driving apparatus of a plasma display panel according to the present invention includes a panel having a scanning electrode for receiving a scanning pulse in an address period and an address electrode for receiving a data pulse synchronized with the scanning pulse in the address period; and a pulse width controller for changing the width of the scanning pulse when the panel is driven at a low temperature.Type: GrantFiled: October 23, 2002Date of Patent: May 8, 2007Assignee: LG Electronics Inc.Inventors: Soo Seok Sim, Won Tae Kim, Bon Cheol Koo, Seong Ho Kang
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Patent number: 7053559Abstract: A method and apparatus of driving a plasma display panel wherein an abnormal discharge generated from a non-display area can be prevented to thereby improve a picture quality. In the method and apparatus, at least partial ones of electrodes at the active area and at least partial ones of dummy electrodes positioned within the non-display area are driven with an identical signal.Type: GrantFiled: July 8, 2003Date of Patent: May 30, 2006Assignee: LG Electronics Inc.Inventors: Won Tae Kim, Soo Seok Sim
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Publication number: 20040258312Abstract: A discriminating method and apparatus between a moving image and a still image in a plasma display panel for accurately discriminating a moving image from a still image as well as reducing a deterioration of picture quality is disclosed. In the method and apparatus, an average picture level is independently detected with respect to each data block. Average picture levels detected from said data blocks are compared between frames to discriminate a still image from a moving image.Type: ApplicationFiled: June 18, 2004Publication date: December 23, 2004Applicant: LG Electronics Inc.Inventor: Soo Seok Sim
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Publication number: 20040257310Abstract: A method and apparatus for adjusting a gain for each position of a plasma display panel for improving a brightness uniformity of a picture field is disclosed. In the method and apparatus, a gain of data to be displayed at a first position of a field of the plasma display panel is controlled into a first gain value. A gain of data to be displayed at a second position of said field is controlled into a second gain value.Type: ApplicationFiled: June 18, 2004Publication date: December 23, 2004Applicant: LG Electronics Inc.Inventors: Hyun Mok Yu, Soo Seok Sim
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Publication number: 20040021653Abstract: A method and apparatus of driving a plasma display panel wherein an abnormal discharge generated from a non-display area can be prevented to thereby improve a picture quality. In the method and apparatus, at least partial ones of electrodes at the active area and at least partial ones of dummy electrodes positioned within the non-display area are driven with an identical signal.Type: ApplicationFiled: July 8, 2003Publication date: February 5, 2004Applicant: LG Electronics Inc.Inventors: Won Tae Kim, Soo Seok Sim
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Publication number: 20030080927Abstract: This invention relates to a driving apparatus of a plasma display panel that is capable of being operated stable, regardless of temperature.Type: ApplicationFiled: October 23, 2002Publication date: May 1, 2003Applicant: LG Electronics Inc.Inventors: Soo Seok Sim, Won Tae Kim, Bon Cheol Koo, Seong Ho Kang
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Patent number: 6166720Abstract: YUV to RGB converter for converting a digital YUV signal having a Y signal, a U signal, and a V signal to a digital RGB signal having an R signal, a G signal, and a B signal according to equations:R=Y+N.sub.1 .times.VG=Y-N.sub.2 .times.V-N.sub.3 .times.UB=Y+N.sub.4 .times.Uwherein the YUV to RGB converter performs only bit shifting and adding/subtracting operations, and N.sub.1, N.sub.2, N.sub.3, and N.sub.4 are constants.Type: GrantFiled: April 28, 1998Date of Patent: December 26, 2000Assignee: LG Semicon Co., Ltd.Inventor: Soo-Seok Sim
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Patent number: 6091390Abstract: A driver of an LCD having a plurality of channels includes a counter for counting a signal having a predetermined level; a DAC for sequentially increasing or decreasing one level of a plurality of input voltage levels when the counter counts; a plurality of comparators for comparing its input data with the output of the counter, a comparator being formed for each channel; a plurality of level shifters for compensating for the level difference between the DAC and relevant comparator; and a plurality of sample/hold portions for sampling a current output from the DAC according to the output signal of the level shifter, and for holding the sampled value when the counter counts.Type: GrantFiled: July 9, 1997Date of Patent: July 18, 2000Assignee: LG Semicon Co., Ltd.Inventor: Soo Seok Sim