Patents by Inventor YOUNG-SUN KWAK
YOUNG-SUN KWAK 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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Publication number: 20250062944Abstract: A method by which a first communication node operates in a communication system comprises the steps of: generating a first sequence and a second sequence; generating a first signal sequence on the basis of the first sequence and the second sequence; and transmitting a first signal generated by modulating the first signal sequence, wherein even-numbered elements and odd numbered elements of the first signal sequence are classified into a first element group and a second element group, respectively, and any one of the first sequence and the second sequence can be mapped in ascending order in the first element group, and the other one thereof can be mapped in descending order in the second element group.Type: ApplicationFiled: December 21, 2022Publication date: February 20, 2025Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kapseok CHANG, Byung Jae KWAK, Won Cheol CHO, Young-Jo KO, Yong Sun KIM
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Patent number: 9691337Abstract: A digital gamma correction part includes a memory and a selector. The memory is configured to store a basic gamma reference data, a first compensated gamma reference data and a second compensated gamma reference data, where respective data of the first compensated gamma reference data are greater than respective data of the basic gamma reference data, and respective data of the second compensated gamma reference data are less than respective data of the basic gamma reference data. The selector is configured to receive a luminance data determined based on a luminance of a display panel, and to output a gamma reference data by selecting one from the basic gamma reference data, the first compensated gamma reference data and the second compensated gamma reference data based on the luminance data and a gamma converted reference range.Type: GrantFiled: August 13, 2014Date of Patent: June 27, 2017Assignee: Samsung Display Co., Ltd.Inventors: Ho-In Kim, Young-Sun Kwak, Jun-Ho Hwang
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Patent number: 9633618Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.Type: GrantFiled: May 19, 2014Date of Patent: April 25, 2017Assignee: Samsung Display Co., Ltd.Inventors: Young-Sun Kwak, Kyung Won Kang, Ji Hyun Kim, Hyeon-Do Park, Won Jin Seo, Jun-Ho Hwang
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Patent number: 9564096Abstract: A display panel driving apparatus is disclosed. In one aspect the apparatus includes a gate driving part and a data driving part. The gate driving part is configured to increase a gate signal applied to a gate line of a display panel from an OFF voltage to a ON voltage, in response to an activation of a gate clock signal. It is also configured to decrease the gate signal from the ON voltage to a kickback compensation voltage between the OFF voltage and the ON voltage through a plurality of steps in response to an activation of a kickback compensation signal. The data driving part is configured to apply a data signal to a data line of the display panel. Therefore, a data-charging rate may be increased, and thus a display quality of the display apparatus may be increased.Type: GrantFiled: October 23, 2013Date of Patent: February 7, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jun-Ho Hwang, Young-Sun Kwak, Ki-Hyun Pyun
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Patent number: 9368694Abstract: A method of fabricating a light-emitting device package includes preparing a carrier including a first surface and a second surface disposed opposite the first surface, forming a phosphor layer on the first surface of the carrier, emitting first light from a test light-emitting device toward the second surface of the carrier, analyzing second light passing through the phosphor layer, and determining a thickness of the phosphor layer based on the analysis.Type: GrantFiled: June 16, 2015Date of Patent: June 14, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Raphael Jung, Jae-hyung Im, Young-sun Kwak
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Publication number: 20160099388Abstract: A method of fabricating a light-emitting device package includes preparing a carrier including a first surface and a second surface disposed opposite the first surface, forming a phosphor layer on the first surface of the carrier, emitting first light from a test light-emitting device toward the second surface of the carrier, analyzing second light passing through the phosphor layer, and determining a thickness of the phosphor layer based on the analysis.Type: ApplicationFiled: June 16, 2015Publication date: April 7, 2016Inventors: Raphael JUNG, Jae-hyung IM, Young-sun KWAK
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Patent number: 9262979Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.Type: GrantFiled: March 19, 2014Date of Patent: February 16, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ho In Kim, Kyung Won Kang, Young-Sun Kwak, Sang An Kwon, Hyeon-Do Park, Won Jin Seo, Myung Bo Sim, Yoon Seop Shim
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Patent number: 9129888Abstract: A nitride-based semiconductor device includes a buffer layer on a substrate, a nitride-based semiconductor layer on the buffer layer, at least one ion implanted layer within the nitride-based semiconductor layer, and a channel layer on the nitride-based semiconductor layer.Type: GrantFiled: July 22, 2013Date of Patent: September 8, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Hoon Lee, Young Sun Kwak
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Publication number: 20150206485Abstract: A digital gamma correction part includes a memory and a selector. The memory is configured to store a basic gamma reference data, a first compensated gamma reference data and a second compensated gamma reference data, where respective data of the first compensated gamma reference data are greater than respective data of the basic gamma reference data, and respective data of the second compensated gamma reference data are less than respective data of the basic gamma reference data. The selector is configured to receive a luminance data determined based on a luminance of a display panel, and to output a gamma reference data by selecting one from the basic gamma reference data, the first compensated gamma reference data and the second compensated gamma reference data based on the luminance data and a gamma converted reference range.Type: ApplicationFiled: August 13, 2014Publication date: July 23, 2015Inventors: Ho-In KIM, Young-Sun KWAK, Jun-Ho HWANG
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Publication number: 20150091949Abstract: A display device may include a display panel that includes a first region and a second region. The display device may include a controller that may receive a first gamma value and a second gamma value, use the first gamma value or a third gamma value to generate first image data, use the first gamma value and the second gamma value to generate a fourth gamma value, and use the fourth gamma value to generate second image data. The display device may include a data driver that may use the first image data and the second image data to generate a first data voltage set and a second data voltage set. The first region may use the first data voltage set to display a first portion of an image. The second region may use the second data voltage set to display a second portion of the image.Type: ApplicationFiled: March 19, 2014Publication date: April 2, 2015Applicant: Samsung Display Co., Ltd.Inventors: Ho In KIM, Kyung Won KANG, Young-Sun KWAK, Sang An KWON, Hyeon-Do PARK, Won Jin SEO, Myung Bo SIM, Yoon Seop SHIM
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Publication number: 20140347258Abstract: A display panel driving apparatus is disclosed. In one aspect the apparatus includes a gate driving part and a data driving part. The gate driving part is configured to increase a gate signal applied to a gate line of a display panel from an OFF voltage to a ON voltage, in response to an activation of a gate clock signal. It is also configured to decrease the gate signal from the ON voltage to a kickback compensation voltage between the OFF voltage and the ON voltage through a plurality of steps in response to an activation of a kickback compensation signal. The data driving part is configured to apply a data signal to a data line of the display panel. Therefore, a data-charging rate may be increased, and thus a display quality of the display apparatus may be increased.Type: ApplicationFiled: October 23, 2013Publication date: November 27, 2014Applicant: Samsung Display Co., Ltd.Inventors: Jun-Ho Hwang, Young-Sun Kwak, Ki-Hyun Pyun
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Publication number: 20140347384Abstract: An image signal modifying method is disclosed. In one aspect, the image signal modifying method includes inputting a gray level interval of a first dynamic capacitance compensation (DCC) lookup table to a current gray level which is a target in a previous image signal when it is overdriven (DTG) and 0 to a gray level of the previous image signal (PIG). The method also includes searching for a data value in an adaptive color correction (ACC) lookup table corresponding to a gray level equal to a numerical value of the DTG (ALT) and performing an algorithm based on the DTG, the ALT, and the gray level interval of the first DCC lookup table. The method further includes generating a second DCC lookup table based on the algorithm, and performing second DCC processing on the input image signal based on the second DCC lookup table.Type: ApplicationFiled: May 19, 2014Publication date: November 27, 2014Applicant: Samsung Display Co., Ltd.Inventors: Young-Sun Kwak, Kyung Won Kang, Ji Hyun Kim, Hyeon-Do Park, Won Jin Seo, Jun-Ho Hwang
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Patent number: 8884995Abstract: A system for compensating for gamma data is provided comprising a display panel including at least one feedback line connected to at least one pixel, a gray voltage generator generating a reference gray voltage based on first gamma data, a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line, a multiplexer receiving at least one feedback voltage from the at least one feedback line and selecting a feedback voltage from the received at least one feedback voltage and outputting the selected feedback voltage, an A/D converter converting the selected feedback voltage into feedback data, and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data.Type: GrantFiled: November 4, 2011Date of Patent: November 11, 2014Assignee: Samsung Display Co., Ltd.Inventors: Young-Sun Kwak, Nam-Suk Bang, Ji-Won Kim, Won-Hee Lee
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Publication number: 20140168186Abstract: A display device includes a display panel including gate lines, data lines, and pixels connected to the gate lines and the data lines, a gate driver driving the gate lines, a data driver driving the data lines, a voltage generator generating first and second voltages to drive the gate driver, and a timing controller receiving an image signal, applying a data signal and first control signals to the data driver, and applying second control signals to the gate driver. The timing controller calculates a total operation time of the display panel and applies a first voltage control signal and a second voltage control signal to the voltage generator to correspondingly change a voltage level of at least one of the first and second voltages when the total operation time exceeds a predetermined reference time.Type: ApplicationFiled: April 12, 2013Publication date: June 19, 2014Applicant: Samsung Display Co., Ltd.Inventors: Kyungwon KANG, Young-Sun KWAK
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Publication number: 20140021481Abstract: A nitride-based semiconductor device includes a buffer layer on a substrate, a nitride-based semiconductor layer on the buffer layer, at least one ion implanted layer within the nitride-based semiconductor layer, and a channel layer on the nitride-based semiconductor layer.Type: ApplicationFiled: July 22, 2013Publication date: January 23, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Hoon LEE, Young Sun KWAK
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Publication number: 20120320098Abstract: A system for compensating for gamma data is provided comprising a display panel including at least one feedback line connected to at least one pixel, a gray voltage generator generating a reference gray voltage based on first gamma data, a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line, a multiplexer receiving at least one feedback voltage from the at least one feedback line and selecting a feedback voltage from the received at least one feedback voltage and outputting the selected feedback voltage, an A/D converter converting the selected feedback voltage into feedback data, and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data.Type: ApplicationFiled: November 4, 2011Publication date: December 20, 2012Inventors: YOUNG-SUN KWAK, Nam-Suk Bang, Ji-Won Kim, Won-Hee Lee