Patents by Inventor Jung-Keun Ahn
Jung-Keun Ahn 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: 9136754Abstract: The described technology relates generally to a power supply, a display device including the same, and a driving method thereof to reduce power consumption of the display device. Embodiments include a power source voltage controller sensing a panel current flowing in the display panel and controlling a feedback voltage according to the panel current and the power source voltage, and a DC-DC converter generating a power source voltage according to the feedback voltage to respectively supply it to the plurality of light emitting elements.Type: GrantFiled: March 9, 2010Date of Patent: September 15, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jung-Keun Ahn, Shingo Kawashima
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Patent number: 8988321Abstract: A light emitting display is configured to reduce or prevent motion blur by shortening a time that a black frame is displayed between image frames. One embodiment includes display region, a data driver, a scan driver, and a controller. The display region displays frames of images according to a data signal and a scan signal. The data driver transmits data for displaying first frames and second (black) frames between the first frames. The scan driver includes first and second scan driving circuits for transmitting scan signals, and a switch unit for selectively coupling the first and second scan driving circuits. The scan driver transmits scan signals sequentially during the first frames and transmits scan signals to at least two of the scan lines concurrently by driving the first and second scan driving circuits in parallel during the second frames. The controller transmits a driving control signal to control the switch.Type: GrantFiled: November 3, 2009Date of Patent: March 24, 2015Assignee: Samsung Display Co., Ltd.Inventors: An-Su Lee, Myung-Ho Lee, June-Young Song, Kyoung-Soo Lee, Myoung-Seop Song, Yun-Tae Kim, Jong-Soo Kim, Jung-Keun Ahn, Min-Cheol Kim, Sang-Kyun Cho, Hye-Jin Shin, Hun-Tae Kim
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Patent number: 8957576Abstract: A pixel according to an embodiment includes: an organic light emitting diode (OLED); a first transistor coupled between a data line and a first node and configured to be turned on when a scan signal is supplied to a scan line; a third transistor coupled between a reference power source and a second node and configured to be concurrently turned on and off with the first transistor; a storage capacitor coupled between the first node and the second node; a second transistor coupled between a first power source and the OLED and having a gate electrode coupled to the first node; a fourth transistor coupled between the first power source and the second node and having a gate electrode coupled to a control line; and a fifth transistor coupled between the second transistor and the OLED and having a gate electrode coupled to an emission control line.Type: GrantFiled: July 5, 2011Date of Patent: February 17, 2015Assignee: Samsung Display Co., Ltd.Inventor: Jung-Keun Ahn
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Patent number: 8897492Abstract: Disclosed is a people counter including a setting interface and a setting method thereof. Since a reference width used to count of a moving object within an image is visibly arranged and displayed on a screen so that a detected width of the moving object can be compared with the reference width, setting and verification for count is very easy. In addition, since the interface can be freely moved for adjustment and comparison of a reference width using a pointing device such as a mouse, thereby providing verification and resetting which are intuitive and practical over conventional manual adjustment schemes, count accuracy can be easily increased in different environments depending on conditions or type of moving objects within an image.Type: GrantFiled: August 11, 2011Date of Patent: November 25, 2014Assignees: UDP Technology Ltd., VCA Technology Ltd.Inventors: Yeon Hag Chou, Jung Keun Ahn, Ben White, Etienne Eccles, Bin Cheng, Geoffrey Thiel, Neil Robinson
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Patent number: 8780177Abstract: The present invention provides an apparatus and method for camera parameter calibration which is capable of easily and simply setting physical and optical characteristic parameters of a camera in order to acquire information on actual measurement of an image provided through the camera with high accuracy. The camera parameter calibration apparatus and method has an advantage of correct image analysis that it is capable of increasing accuracy of information of measurement through an image only with an intuitive interface manipulation, without taking a time-consuming and incorrect actual measurement procedure, by determining parameters of the space model corresponding to the image by displaying a 3D space model corresponding to a real space of the image on the image and changing and adjusting visual point parameters such that the 3D space model matches the display image, and regarding the determined parameters of the space model as camera parameters of the image.Type: GrantFiled: August 27, 2010Date of Patent: July 15, 2014Assignees: UDP Technology Ltd., VCA TechnologyInventors: Etienne Eccles, Ben White, Geoff Thiel, Jung Keun Ahn
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Publication number: 20140119594Abstract: Disclosed is a people counter including a setting interface and a setting method thereof. Since a reference width used to count of a moving object within an image is visibly arranged and displayed on a screen so that a detected width of the moving object can be compared with the reference width, setting and verification for count is very easy. In addition, since the interface can be freely moved for adjustment and comparison of a reference width using a pointing device such as a mouse, thereby providing verification and resetting which are intuitive and practical over conventional manual adjustment schemes, count accuracy can be easily increased in different environments depending on conditions or type of moving objects within an image.Type: ApplicationFiled: August 11, 2011Publication date: May 1, 2014Inventors: Yeon Hag Chou, Jung Keun Ahn, Ben White, Etienne Eccles, Bin Cheng, Geoffrey Thiel, Neil Robinson
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Patent number: 8686760Abstract: A buffer and a driving method thereof are provided. The buffer includes a first transistor for transmitting a first power source voltage to an output terminal according to an input voltage, a second transistor for transmitting an inverted voltage of the input voltage to the output terminal, a capacitor including a first terminal coupled to a gate of the second transistor and a second terminal configured to be input with a first level voltage or a second level voltage according to the input voltage, and a third transistor for transmitting a second power source voltage to the gate of the second transistor according to the input voltage.Type: GrantFiled: January 31, 2011Date of Patent: April 1, 2014Assignee: Samsung Display Co., Ltd.Inventor: Jung-Keun Ahn
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Patent number: 8638276Abstract: In an organic light emitting display, a gamma can be applied according to color regardless of the sequence of data output from a data driver, even if a separate gamma by color is used. A method for driving the organic light emitting display is also provided.Type: GrantFiled: June 30, 2009Date of Patent: January 28, 2014Assignee: Samsung Display Co., Ltd.Inventors: An-Su Lee, Myung-Ho Lee, June-Young Song, Kyoung-Soo Lee, Myoung-Seop Song, Yun-Tae Kim, Jong-Soo Kim, Min-Cheol Kim, Jung-Keun Ahn, Hun-Tae Kim, Sang-Kyun Cho, Hye-Jin Shin
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Patent number: 8630449Abstract: The present invention relates to a water level monitoring device and method, which has an advantage of efficient water level monitoring and high device reliability by setting a portion of an area including the water area and the shore area in the image data, monitoring an area in the horizontal direction other than the vertical direction through the image, decreasing complexity by significantly reducing the computational amount over an existing vertical direction water level measuring system, excluding noises such as floating matters, irregular reflection and so on through a water level model generating process for area distinction, and generating a water level model adaptive to environmental factors such as algal bloom, muddy water and so on.Type: GrantFiled: February 9, 2012Date of Patent: January 14, 2014Assignees: UDP Technology Ltd., S1 Corporation, National Disaster Management InstituteInventors: Yeon Hak Choo, Jung Keun Ahn, Sang Wan Hong, Young Jin Park, Jae Hyun Shim, Sang Man Jeong
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Patent number: 8587575Abstract: A driving method of a display device that includes a display panel including a plurality of light emitting elements, is supplied with a power source voltage, and includes a saturation region and a non-saturation region according to variation of a panel current flowing to the display panel is provided. The driving method includes sensing the panel current, determining the power source voltage and the panel current, controlling a feedback voltage to drive the power source voltage to be equal to a saturation voltage corresponding to a saturation point at a boundary between the saturation region and the non-saturation region based on the determined power source voltage and the determined panel current, and controlling the power source voltage according to the feedback voltage to supply the controlled power source voltage to each of the plurality of light emitting elements.Type: GrantFiled: May 27, 2010Date of Patent: November 19, 2013Assignee: Samsung Display Co., Ltd.Inventor: Jung-Keun Ahn
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Patent number: 8462083Abstract: An inverter includes a first PMOS transistor having a gate electrode coupled to a first input port, a first electrode coupled to a first node and a second electrode coupled to the gate electrode or a second power source; a second PMOS transistor having a gate electrode coupled to the first input port, and first and second electrodes coupled respectively to a first power source and an output port; a third PMOS transistor having a gate electrode coupled to the first node, first and second electrodes coupled respectively to the output port and a second input port; and a capacitor coupled between the first node and the output port.Type: GrantFiled: April 13, 2009Date of Patent: June 11, 2013Assignee: Samsung Display Co., Ltd.Inventor: Jung-Keun Ahn
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Patent number: 8368675Abstract: An organic light emitting display device comprising: a data driver supplying data signals to data output lines; a scan driver supplying scan signals sequentially to scan output lines; a light emitting control line driver supplying light emitting control signals to light emitting control output lines; and a pixel unit including a plurality of pixels connected to the output lines of each driver, at least one driver having a buffer circuit disposed at each output line. Each buffer circuit comprises a transistor having a gate layer, source and drain layers and a metal layer for shielding Electro-Static Discharge (ESD), wherein the metal layer is formed over the gate layer when the gate layer is overlapped by one of the source or a drain electrodes, or the metal layer is formed to not overlap the gate layer when the gate layer is not overlapped by the source or a drain electrodes.Type: GrantFiled: September 18, 2009Date of Patent: February 5, 2013Assignee: Samsung Display Co., Ltd.Inventors: Dong-Wook Park, Se-Ho Kim, Jung-Keun Ahn, Han-Sung Bae, Dong-Hwi Kim, Chang-Yeop Kim, Ok-Kyung Park, Kwang-Min Kim
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Publication number: 20120269381Abstract: The present invention relates to a water level monitoring device and method, which has an advantage of efficient water level monitoring and high device reliability by setting a portion of an area including the water area and the shore area in the image data, monitoring an area in the horizontal direction other than the vertical direction through the image, decreasing complexity by significantly reducing the computational amount over an existing vertical direction water level measuring system, excluding noises such as floating matters, irregular reflection and so on through a water level model generating process for area distinction, and generating a water level model adaptive to environmental factors such as algal bloom, muddy water and so on.Type: ApplicationFiled: February 9, 2012Publication date: October 25, 2012Inventors: YEON HAK CHOO, Jung Keun Ahn, Sang Wan Hong, Young Jin Park, Jae Hyun Shim, Sang Man Jeong
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Publication number: 20120249514Abstract: An organic light emitting display device comprises: a display unit; a power supply unit including a power source which generates a power supply voltage to drive the display unit; a data compensator that adapts a voltage drop, caused by a resistance of power lines supplying the power supply voltage from the power source to a pixel included in the display unit, to a data voltage of the pixel and generates a compensated data voltage of the pixel; and a data driver that applies the compensated data voltage to the display unit.Type: ApplicationFiled: September 23, 2011Publication date: October 4, 2012Inventor: Jung-Keun Ahn
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Publication number: 20120161611Abstract: A pixel according to an embodiment includes: an organic light emitting diode (OLED); a first transistor coupled between a data line and a first node and configured to be turned on when a scan signal is supplied to a scan line; a third transistor coupled between a reference power source and a second node and configured to be concurrently turned on and off with the first transistor; a storage capacitor coupled between the first node and the second node; a second transistor coupled between a first power source and the OLED and having a gate electrode coupled to the first node; a fourth transistor coupled between the first power source and the second node and having a gate electrode coupled to a control line; and a fifth transistor coupled between the second transistor and the OLED and having a gate electrode coupled to an emission control line.Type: ApplicationFiled: July 5, 2011Publication date: June 28, 2012Inventor: Jung-Keun Ahn
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Patent number: 8188659Abstract: An electrode composition includes a metal in an amount of about 52% to about 62% by weight of the composition, a glass insulation material in an amount of about 5% to about 7% by weight of the composition, a coloring agent in an amount of about 3% to about 9% by weight of the composition, and a vehicle.Type: GrantFiled: April 8, 2008Date of Patent: May 29, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Chul-Hong Kim, Jung-Keun Ahn, Hyun-Mi Jeong, Yeon-Joo Choi
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Patent number: 8174822Abstract: A plasma display device includes a plasma display panel (PDP) having electrodes between front and rear substrates, a chassis base on an outer surface of the PDP, a printed circuit board assembly (PBA) on the chassis base, a flexible printed circuit (FPC) connecting the PBA to the electrodes of the PDP, an anisotropic conductive film between terminals of the electrodes and a terminal of the FPC, and a sealing member surrounding the terminals of the electrodes and the terminal of the FPC, the sealing member including a surface hydrophobic modifying layer and an insulation layer.Type: GrantFiled: October 30, 2007Date of Patent: May 8, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Chul-Hong Kim, Jung-Keun Ahn, Hyun-Mi Jeong, Sung-Bae Kim, Bu-Kyeong Mo, Jeong-Rok Cha
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Publication number: 20120062623Abstract: A method of driving an organic light emitting display in which a frame is divided into a plurality of sub frames, includes: storing a plurality of bit change values corresponding to emission times in a plurality of lookup tables; selecting one of the lookup tables from among the plurality of lookup tables; measuring and storing emission times of pixels included in the organic light emitting display; extracting one of the bit change values from the selected lookup table corresponding to the emission time of one of the pixels when first data to be supplied to the one of the pixels is input; and changing a bit value of the first data to generate second data to be supplied to the one of the pixels utilizing the extracted bit change value.Type: ApplicationFiled: June 28, 2011Publication date: March 15, 2012Inventors: Do-Ik KIM, Jae-Woo Ryu, Jung-Keun Ahn
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Publication number: 20110316838Abstract: An apparatus for supplying a power source voltage, a display device having the same, and a driving method thereof, includes: a DC-DC converter for generating a power source voltage corresponding to an input voltage and a feedback voltage, and for supplying the power source voltage to a display region comprising a plurality of light emitting elements; and a power source voltage controller for detecting an input current flowing to the DC-DC converter and the power source voltage outputted from the DC-DC converter, for generating the feedback voltage corresponding to the input current and the power source voltage, and for supplying the feedback voltage to the DC-DC converter.Type: ApplicationFiled: April 21, 2011Publication date: December 29, 2011Inventor: Jung-Keun AHN
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Publication number: 20110279151Abstract: A buffer and a driving method thereof are provided. The buffer includes a first transistor for transmitting a first power source voltage to an output terminal according to an input voltage, a second transistor for transmitting an inverted voltage of the input voltage to the output terminal, a capacitor including a first terminal coupled to a gate of the second transistor and a second terminal configured to be input with a first level voltage or a second level voltage according to the input voltage, and a third transistor for transmitting a second power source voltage to the gate of the second transistor according to the input voltage.Type: ApplicationFiled: January 31, 2011Publication date: November 17, 2011Inventor: Jung-Keun Ahn