Patents by Inventor Woo Seok Choi
Woo Seok Choi 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: 20150116008Abstract: A built-in gate driver includes a shift register provided in a non-display area of a panel, and configured to include first to gth stages outputting a scan signal, a clock supply line part configured to include m number of clock supply lines connected to the shift register, and a power supply line part configured to include n number of power supply lines connected to the shift register. At least one of the lines of the clock supply lines and the power supply lines are in a first side direction of the shift register, and the other at least one or more lines of the clock supply lines and the power supply lines are in a second side direction of the shift register.Type: ApplicationFiled: October 20, 2014Publication date: April 30, 2015Inventors: Yong Ho Jang, Woo Seok Choi
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Patent number: 8867697Abstract: A shift register is provided in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes stages for sequentially outputting scan pulses. An nth one of the stages includes a node controller for controlling voltages at nodes, and an output unit for outputting any one of a corresponding one of the scan pulses and a first discharging voltage according to the voltages at the nodes. The nodes include set and reset nodes. The node controller of the nth stage includes a first switching device controlled by a voltage supplied to the reset node for supplying a second discharging voltage to the set node, and an inverter circuit controlled by a voltage supplied to the set node for supplying any one of a charging voltage and a third discharging voltage to the reset node.Type: GrantFiled: March 18, 2013Date of Patent: October 21, 2014Assignee: LG Display Co., Ltd.Inventors: Yong-Ho Jang, Seung-Chan Choi, Jae-Yong You, Woo-Seok Choi
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Publication number: 20140293080Abstract: An image processing apparatus and method are provided. In the method, an image sensor including first pixels for detecting an image and second pixels for detecting a different type of signals, reads out values from at least one of the second pixels and at least one the first pixels, based on a predetermined rule, outputs a first sampling image, based on the read out pixels, restores values of the at least one of the second pixels to be image pixel values for locations of the at least one of the second pixels included in the first sampling image, outputs a restored image based on the restored values, performs binning on pixels of the restored image using a predetermined method; and outputs a reduced resolution image with a resolution reduced at a predetermined rate from the restored image, based on the binning.Type: ApplicationFiled: January 24, 2014Publication date: October 2, 2014Applicant: Samsung Electronics Co., Ltd.Inventor: Woo-Seok CHOI
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Patent number: 8823860Abstract: An apparatus for auto-focusing detection, a camera applying the same, and a method for calculating a distance to a subject are disclosed. The camera calculates a focusing control state based on synthetic image data output as an image passing through a pupil split unit provided with a filter arranged at one or more of the at least two holes as taken by an image pickup unit.Type: GrantFiled: February 25, 2011Date of Patent: September 2, 2014Assignee: Samsung Electronics Co., LtdInventors: Woo-Seok Choi, Jeong-Won Lee
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Publication number: 20140063859Abstract: A power supply device is provided. The power supply device includes: a transformer configured to include first and second windings; a half bridge circuit configured to be connected to first and second nodes and both ends of the first wiring; and a full bridge circuit configured to be connected to third and fourth nodes and both ends of the second winding. Since the leakage inductance of the transformer and the bridge capacitor of the half bridge circuit form a direct current (DC) resonant tank, switching loss that may occur during the turning on or off of switches can be reduced.Type: ApplicationFiled: September 5, 2013Publication date: March 6, 2014Applicants: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY, LG INNOTEK CO., LTD.Inventors: Chunfeng JIN, Sung Jun PARK, Woo Seok CHOI
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Patent number: 8613798Abstract: A transition metal oxide insulator composition having a tuned band gap includes a transition metal oxide having a perovskite or a perovskite-like crystalline structure. The transition metal oxide includes at least one first element selected from the group of Bi, Ca, Ba, Sr, Li, Na, Mg, K, Pb, and Pr; and at least one second element selected from the group of Ti, Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W, Re, Os, Ir, and Pt. At least one correlated insulator is integrated into the crystalline structure, including REMO3, wherein RE is at least one Rare Earth element, and wherein M is at least one element selected from the group of Co, V, Cr, Ni, Mn, and Fe. The composition is characterized by a band gap of less than 4.5 eV.Type: GrantFiled: February 21, 2012Date of Patent: December 24, 2013Assignee: UT-Battelle, LLCInventors: Ho Nyung Lee, Matthew F. Chisholm, Jr., Gerald Earle Jellison, Jr., David J. Singh, Woo Seok Choi
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Publication number: 20130321694Abstract: Image sensors include an array of image sensor pixels therein. This array of image sensor pixels includes a first focus detection pixel and at least a first color pixel. A switching network is provided, which is electrically coupled to the array. This switching network may be configured to generate a first mixed image signal by electronically mixing a focus detection signal generated by the first focus detection pixel with at least one color pixel signal generated by the at least a first color pixel. The first focus detection pixel can be a color-blind pixel, which may include a light-blocking shield mask therein.Type: ApplicationFiled: March 14, 2013Publication date: December 5, 2013Applicant: Samsung Electronics Co., Ltd.Inventors: Jin Hun Shin, Ji Min Cheon, Dong Hun Lee, Hyeok Jong Lee, Jin Ho Seo, Woo Seok Choi, Seog Heon Ham
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Patent number: 8558601Abstract: Disclosed herein is a gate driving circuit including a first clock generator to sequentially output n output clock pulses, a second clock generator to sequentially output n output control clock pulses, and a shift register to receive the n output clock pulses and the n output control clock pulses and to sequentially output a plurality of scan pulses, wherein high sections of k-th to (k+s)-th output clock pulses output during adjacent periods overlap with one another, a k-th output control clock pulse rises before the k-th output clock pulse, the k-th output control clock pulse falls before a (k?a)-th output clock pulse, a high section of the output control clock pulses does not overlap with that of the k-th output clock pulse, and a (k+b)-th output clock pulse falls during the high section of the output control clock pulses not overlapping with that of the k-th output clock pulse.Type: GrantFiled: July 5, 2012Date of Patent: October 15, 2013Assignee: LG Display Co., Ltd.Inventors: Yong-Ho Jang, Seung-Chan Choi, Jae-Yong You, Woo-Seok Choi
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Publication number: 20130240710Abstract: An imaging apparatus and an image sensor, where the imaging apparatus includes a lens unit and an image sensor including a plurality of image detection pixels for detecting an image formed by the lens unit and a plurality of focus detection pixels for detecting a focus of the image, wherein the plurality of focus detection pixels are arranged in a non-uniform pattern in which arrangements within shared intervals between the plurality of focus detection pixels are not equal to each other. Accordingly, the focus of an image formed on the image sensor can be accurately measured while a loss of image quality of the image formed on the image sensor is minimized.Type: ApplicationFiled: February 1, 2013Publication date: September 19, 2013Applicant: Samsung Electronics Co., Ltd.Inventor: Woo-seok CHOI
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Publication number: 20130243150Abstract: A shift register is provided in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes stages for sequentially outputting scan pulses. An nth one of the stages includes a node controller for controlling voltages at nodes, and an output unit for outputting any one of a corresponding one of the scan pulses and a first discharging voltage according to the voltages at the nodes. The nodes include set and reset nodes. The node controller of the nth stage includes a first switching device controlled by a voltage supplied to the reset node for supplying a second discharging voltage to the set node, and an inverter circuit controlled by a voltage supplied to the set node for supplying any one of a charging voltage and a third discharging voltage to the reset node.Type: ApplicationFiled: March 18, 2013Publication date: September 19, 2013Applicant: LG DISPLAY CO., LTD.Inventors: Yong Ho JANG, Seung-Chan CHOI, Jae-Yong YOU, Woo-Seok CHOI
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Publication number: 20130213263Abstract: A transition metal oxide insulator composition having a tuned band gap includes a transition metal oxide having a perovskite or a perovskite-like crystalline structure. The transition metal oxide includes at least one first element selected from the group of Bi, Ca, Ba, Sr, Li, Na, Mg, K, Pb, and Pr; and at least one second element selected from the group of Ti, Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W, Re, Os, Ir, and Pt. At least one correlated insulator is integrated into the crystalline structure, including REMO3, wherein RE is at least one Rare Earth element, and wherein M is at least one element selected from the group of Co, V, Cr, Ni, Mn, and Fe. The composition is characterized by a band gap of less than 4.5 eV.Type: ApplicationFiled: February 21, 2012Publication date: August 22, 2013Applicant: UT-BATTELLE, LLCInventors: Ho Nyung Lee, Matthew F. Chisholm, Gerald Earle Jellison, JR., David J. Singh, Woo Seok Choi
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Patent number: 8422621Abstract: A shift register is provided in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes stages for sequentially outputting scan pulses. An nth one of the stages includes a node controller for controlling voltages at nodes, and an output unit for outputting any one of a corresponding one of the scan pulses and a first discharging voltage according to the voltages at the nodes. The nodes include set and reset nodes. The node controller of the nth stage includes a first switching device controlled by a voltage supplied to the reset node for supplying a second discharging voltage to the set node, and an inverter circuit controlled by a voltage supplied to the set node for supplying any one of a charging voltage and a third discharging voltage to the reset node.Type: GrantFiled: December 28, 2011Date of Patent: April 16, 2013Assignee: LG Display Co., Ltd.Inventors: Yong-Ho Jang, Seung-Chan Choi, Jae-Yong You, Woo-Seok Choi
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Publication number: 20130010916Abstract: Disclosed herein is a gate driving circuit including a first clock generator to sequentially output n output clock pulses, a second clock generator to sequentially output n output control clock pulses, and a shift register to receive the n output clock pulses and the n output control clock pulses and to sequentially output a plurality of scan pulses, wherein high sections of k-th to (k+s)-th output clock pulses output during adjacent periods overlap with one another, a k-th output control clock pulse rises before the k-th output clock pulse, the k-th output control clock pulse falls before a (k?a)-th output clock pulse, a high section of the output control clock pulses does not overlap with that of the k-th output clock pulse, and a (k+b)-th output clock pulse falls during the high section of the output control clock pulses not overlapping with that of the k-th output clock pulse.Type: ApplicationFiled: July 5, 2012Publication date: January 10, 2013Inventors: Yong-Ho JANG, Seung-Chan CHOI, Jae-Yong YOU, Woo-Seok CHOI
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Patent number: 8340513Abstract: A camera and a method for performing auto-focusing applying thereto are provided. The camera adjusts a focus using two auto-focusing methods if specific photographing conditions are satisfied.Type: GrantFiled: December 21, 2010Date of Patent: December 25, 2012Assignee: Samsung Electronics Co., LtdInventor: Woo-Seok Choi
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Publication number: 20120269316Abstract: A shift register is provided in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes stages for sequentially outputting scan pulses. An nth one of the stages includes a node controller for controlling voltages at nodes, and an output unit for outputting any one of a corresponding one of the scan pulses and a first discharging voltage according to the voltages at the nodes. The nodes include set and reset nodes. The node controller of the nth stage includes a first switching device controlled by a voltage supplied to the reset node for supplying a second discharging voltage to the set node, and an inverter circuit controlled by a voltage supplied to the set node for supplying any one of a charging voltage and a third discharging voltage to the reset node.Type: ApplicationFiled: December 28, 2011Publication date: October 25, 2012Inventors: Yong-Ho JANG, Seung-Chan CHOI, Jae-Yong YOU, Woo-Seok CHOI
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Publication number: 20110234835Abstract: An apparatus for auto-focusing detection, a camera applying the same, and a method for calculating a distance to a subject are disclosed. The camera calculates a focusing control state based on synthetic image data output as an image passing through a pupil split unit provided with a filter arranged at one or more of the at least two holes as taken by an image pickup unit.Type: ApplicationFiled: February 25, 2011Publication date: September 29, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Woo-Seok CHOI, Jeong-Won Lee
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Publication number: 20110150445Abstract: A camera and a method for performing auto-focusing applying thereto are provided. The camera adjusts a focus using two auto-focusing methods if specific photographing conditions are satisfied.Type: ApplicationFiled: December 21, 2010Publication date: June 23, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Woo-Seok CHOI
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Publication number: 20110080817Abstract: An optical pickup compatible with different types of optically recorded media and an optical recording and/or reproducing system employing the compatible optical pickup, the compatible optical pickup including: a short wavelength light source emitting a short wavelength light; a low-density optical system emitting a long wavelength light; an objective lens focusing lights incident from the long wavelength light source and the low-density optical system onto an information storage medium; a single photodetector (PD) receiving the short and long wavelength lights reflected from the information storage medium; a detection lens focusing the short and long wavelength lights reflected from the information storage medium as a light spot onto the single PD; a first collimating lens positioned on an optical path of a light reflected, wherein the optical path is positioned between the objective lens and the single PD; and a driving unit adjusting a position of the first collimating lens.Type: ApplicationFiled: December 9, 2010Publication date: April 7, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-cheol Bae, Tae-kyung Kim, Kyong-tae Park, Woo-seok Choi
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Publication number: 20090252537Abstract: An optical deflector includes a driving mirror, which is driven to rotate and has a deflecting surface for deflecting an incident light. Gratings are formed on the deflecting surface, each grating having a shape that makes the intensities of light beams diffracted at a positive order and a negative order different from each other. A main scanning line formed by a trace of the deflected light according to the rotation of the driving mirror is a straight line. The optical deflector is used in an optical scanning apparatus with a light source. The optical scanning apparatus is utilized in an image forming apparatus for forming an electrostatic latent image onto an exposure object.Type: ApplicationFiled: October 17, 2008Publication date: October 8, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Woo-seok Choi, Taek-seong Jeong
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Publication number: 20090251754Abstract: A light scanning unit including a light source unit emitting a collimated light beam, and a beam deflector deflecting and scanning the collimated light beam and having a mirror surface that oscillates, a light scanning method and an image forming apparatus employing the light scanning unit are disclosed. The light source unit may be made to oscillate synchronously with the oscillation of the beam deflector so that the incident angle of the collimated light beam on the beam deflector changes in synchronization with the oscillation of the beam deflector, thereby allowing an increase of the maximum deflection angle of the light beam deflected and scanned by the beam deflector.Type: ApplicationFiled: November 4, 2008Publication date: October 8, 2009Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jong-chul CHOI, Woo-Seok Choi