Patents by Inventor Hye-Young Lee
Hye-Young Lee 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: 8274318Abstract: A duty cycle correction circuit of a semiconductor memory apparatus includes a duty correction unit configured to determine a duty correction range in response to a duty correction range control signal, correct a duty of an inputted clock in response to duty correction codes to fall in the determined duty correction range, and generate a duty corrected clock; a duty detection unit configured to detect a duty of the duty corrected clock and output duty information; and a duty correction code generation unit configured to generate the duty correction codes based on the duty information.Type: GrantFiled: December 16, 2010Date of Patent: September 25, 2012Assignee: SK Hynix Inc.Inventor: Hye Young Lee
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Patent number: 8213354Abstract: Disclosed is a structure of a downlink common channel for transmitting an ACK/NACK to notify whether retransmission should be performed through a transmission position of the downlink common channel according to a channel code of a time slot allocated to a UE, and a method for distinguishing an ACK from a NACK, in using a HARQ scheme for uplink transmission of a TDD CDMA scheme in a 3G mobile communication.Type: GrantFiled: February 16, 2005Date of Patent: July 3, 2012Assignee: Samsung Electronics Co., LtdInventors: Hye-Young Lee, Seong-Ill Park, Ju-Ho Lee, Jin-Weon Chang, Young-Bin Chang, Jin-Seok Lee, Song-Hun Kim, Kwang-Yung Jeong
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Publication number: 20120105122Abstract: A duty cycle correction circuit of a semiconductor memory apparatus includes a duty correction unit configured to determine a duty correction range in response to a duty correction range control signal, correct a duty of an inputted clock in response to duty correction codes to fall in the determined duty correction range, and generate a duty corrected clock; a duty detection unit configured to detect a duty of the duty corrected clock and output duty information; and a duty correction code generation unit configured to generate the duty correction codes based on the duty information.Type: ApplicationFiled: December 16, 2010Publication date: May 3, 2012Applicant: Hynix Semiconductor Inc.Inventor: Hye Young LEE
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Patent number: 8149037Abstract: A clock duty correction circuit includes a first current sourcing unit that sources a current to a current path in response to a clock signal, a first current sinking unit that sinks the current of the current path in response to the clock signal, a second current sourcing unit that sources a current to the current path in response to a delay clock signal obtained by delaying the clock signal by a predetermined time, a second current sinking unit that sinks the current of the current path in response to the delay clock signal, a current adjustment unit that adjusts an amount of the current flowing through the current path according to a voltage level of a control voltage, and a clock output unit that outputs an output clock signal having a voltage level corresponding to the amount of the current flowing through the current adjustment unit.Type: GrantFiled: July 21, 2010Date of Patent: April 3, 2012Assignee: Hynix Semiconductor Inc.Inventor: Hye Young Lee
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Patent number: 8106693Abstract: A delay locked loop circuit includes a delay replica model unit for reflecting a delay time of an actual output path to a source clock and outputting the reflected source clock as a delay replica clock, a detector for detecting a remaining time after subtracting a time corresponding to a multiple of a clock cycle of the source clock from a time corresponding to a phase difference between the delay replica clock and the source clock, and a delay locking unit for delaying the source clock for a delay time to synchronize a clock generated by delaying the source clock for the detected remaining time of the detector with a phase of the source clock.Type: GrantFiled: March 25, 2011Date of Patent: January 31, 2012Assignee: Hynix Semiconductor Inc.Inventor: Hye-Young Lee
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Publication number: 20120018715Abstract: The present invention relates to a 2,7-carbazole-containing polymer represented by formula 1 and an organic photovoltaic device comprising the conductive polymer as a photoelectric conversion material. The conductive polymer has high photon absorption efficiency and improved hole mobility and is prepared by introducing a specific amount of a carbazole compound either into a polymer, consisting only of a donor functional group containing one or more aromatic monomers, or into a donor-acceptor type polymer comprising a repeating acceptor group introduced into a donor functional group. The conductive polymer can be used as a photoelectric conversion material for organic thin film transistors (OTFTs) or organic light-emitting diodes (OLEDs). Furthermore, the invention provides an organic photovoltaic device comprising the carbazole-containing conductive polymer as an electron donor, and thus can achieve high photoelectric conversion efficiency in organic thin film solar cells.Type: ApplicationFiled: March 31, 2010Publication date: January 26, 2012Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Sang Jin Moon, Won Suk Shin, Won Wook So, Hye Young Lee, Kyu Nam Kim, Sung Cheol Yoon, Chang Jin Lee
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Publication number: 20110291718Abstract: A clock generation circuit includes a plurality of variable delay units configured to control a delay of an input clock signal under the control of delay control signals assigned thereto among a plurality of delay control signals, and output a plurality of delayed clock signals; a phase comparison unit configured to compare a phase of a reference clock signal which has a predetermined phase difference from the input clock signal and a phase of a delayed clock signal which is outputted from any one variable delay unit among the plurality of variable delay units; and a delay control unit configured to generate the plurality of delay control signals based on a comparison result from the phase comparison unit.Type: ApplicationFiled: December 8, 2010Publication date: December 1, 2011Applicant: Hynix Semiconductor Inc.Inventor: Hye Young LEE
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Publication number: 20110267123Abstract: A clock duty correction circuit includes a first current sourcing unit that sources a current to a current path in response to a clock signal, a first current sinking unit that sinks the current of the current path in response to the clock signal, a second current sourcing unit that sources a current to the current path in response to a delay clock signal obtained by delaying the clock signal by a predetermined time, a second current sinking unit that sinks the current of the current path in response to the delay clock signal, a current adjustment unit that adjusts an amount of the current flowing through the current path according to a voltage level of a control voltage, and a clock output unit that outputs an output clock signal having a voltage level corresponding to the amount of the current flowing through the current adjustment unit.Type: ApplicationFiled: July 21, 2010Publication date: November 3, 2011Applicant: Hynix Semiconductor Inc.Inventor: Hye Young Lee
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Publication number: 20110169539Abstract: A delay locked loop circuit includes a delay replica model unit for reflecting a delay time of an actual output path to a source clock and outputting the reflected source clock as a delay replica clock, a detector for detecting a remaining time after subtracting a time corresponding to a multiple of a clock cycle of the source clock from a time corresponding to a phase difference between the delay replica clock and the source clock, and a delay locking unit for delaying the source clock for a delay time to synchronize a clock generated by delaying the source clock for the detected remaining time of the detector with a phase of the source clock.Type: ApplicationFiled: March 25, 2011Publication date: July 14, 2011Inventor: Hye-Young LEE
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Patent number: 7961017Abstract: A delay locked loop (DLL) circuit includes a first feedback loop configured to delay a reference clock signal with a delay line, wherein the first feedback loop is further configured to generate a correction clock signal by correcting a duty cycle of the reference clock signal by adjusting a delay of the delay line; and a second feedback loop configured to generate an output clock signal by detecting a phase of the reference clock signal and delaying the correction clock signal with a delay according to the detection result.Type: GrantFiled: June 29, 2009Date of Patent: June 14, 2011Assignee: Hynix Semiconductor Inc.Inventor: Hye Young Lee
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Patent number: 7932758Abstract: A delay locked loop circuit includes a delay replica model unit for reflecting a delay time of an actual output path to a source clock and outputting the reflected source clock as a delay replica clock, a detector for detecting a remaining time after subtracting a time corresponding to a multiple of a clock cycle of the source clock from a time corresponding to a phase difference between the delay replica clock and the source clock, and a delay locking unit for delaying the source clock for a delay time to synchronize a clock generated by delaying the source clock for the detected remaining time of the detector with a phase of the source clock.Type: GrantFiled: April 28, 2009Date of Patent: April 26, 2011Assignee: Hynix Semiconductor Inc.Inventor: Hye-Young Lee
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Patent number: 7914762Abstract: A method for preparing a chalcopyrite-type semiconductor compound which is widely used as a sunlight-absorbing material. More specifically, disclosed is a method for preparing a chalcopyrite-type compound, in which microwaves are used as heat sources in the preparation of the chalcopyrite-type compound, and the chalcopyrite-type compound can be produced in a large amount in a short reaction time using a batch or continuous reactor.Type: GrantFiled: September 28, 2007Date of Patent: March 29, 2011Assignee: Korea Research Institute of Chemical TechnologyInventors: Young Kyu Hwang, Jong-San Chang, Sung Hwa Jhung, Jin-Soo Hwang, Hye-Young Lee
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Patent number: 7817600Abstract: A method is provided for performing handover by a terminal in a digital broadcasting system. The method includes measuring strength of a received signal from a serving broadcast transmitter while receiving a broadcast service, and comparing the measured strength of the received signal with a predetermined reference value; periodically measuring strength of the received signal while continuously receiving the broadcast service when the measured strength of the received signal is greater than the reference value; sending a handover start request message for the broadcasting system to a base station of a mobile communication system when the measured strength of the received signal is less than or equal to the reference value; and performing handover from the serving broadcast transmitter to a target broadcast transmitter upon receipt of an accept message for the handover start request for the broadcasting system from the base station.Type: GrantFiled: September 22, 2006Date of Patent: October 19, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Hye-Young Lee, Jae-Yeon Song, Jong-Hyo Lee, Kook-Heui Lee
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Publication number: 20100260661Abstract: A method for preparing a chalcopyrite-type semiconductor compound which is widely used as a sunlight-absorbing material. More specifically, disclosed is a method for preparing a chalcopyrite-type compound, in which microwaves are used as heat sources in the preparation of the chalcopyrite-type compound, and the chalcopyrite-type compound can be produced in a large amount in a short reaction time using a batch or continuous reactor.Type: ApplicationFiled: September 28, 2007Publication date: October 14, 2010Applicant: Korea Research Institute of Chemical TechnologyInventors: Young Kyu Hwang, Jong-San Chang, Sung Hwa Jhung, Jin-Soo Hwang, Hye-Young Lee
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Patent number: 7768327Abstract: A delay locked loop (DLL) of a semiconductor device includes: a first delay line for delaying a first clock signal in synchronization with a first edge of an external clock signal to output a first delayed clock signal; a second delay line for delaying a second clock signal in synchronization with a second edge of the external clock to output a second delayed clock signal; a duty cycle corrector (DCC) for mixing phases of the first and second delayed clock signals to output a DLL clock signal with a corrected duty cycle; and a DCC controller for disabling the duty cycle corrector in a section during which a phase difference between the first and second delayed clock signals is greater than a preset time after a delay locking.Type: GrantFiled: June 29, 2007Date of Patent: August 3, 2010Assignee: Hynix Semiconductor, Inc.Inventor: Hye-Young Lee
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Publication number: 20100171537Abstract: A delay locked loop (DLL) circuit includes a first feedback loop configured to delay a reference clock signal with a delay line, wherein the first feedback loop is further configured to generate a correction clock signal by correcting a duty cycle of the reference clock signal by adjusting a delay of the delay line; and a second feedback loop configured to generate an output clock signal by detecting a phase of the reference clock signal and delaying the correction clock signal with a delay according to the detection result.Type: ApplicationFiled: June 29, 2009Publication date: July 8, 2010Inventor: Hye Young Lee
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Publication number: 20100141312Abstract: A delay locked loop circuit includes a delay replica model unit for reflecting a delay time of an actual output path to a source clock and outputting the reflected source clock as a delay replica clock, a detector for detecting a remaining time after subtracting a time corresponding to a multiple of a clock cycle of the source clock from a time corresponding to a phase difference between the delay replica clock and the source clock, and a delay locking unit for delaying the source clock for a delay time to synchronize a clock generated by delaying the source clock for the detected remaining time of the detector with a phase of the source clock.Type: ApplicationFiled: April 28, 2009Publication date: June 10, 2010Inventor: Hye-Young LEE
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Publication number: 20090312250Abstract: The present inventors show that a brief exposure to EGF stimulates insulin secretion glucose-independently via a Ca2+ influx- and PLD2-dependent mechanism. Furthermore, the present invention shows that EGF is a novel secretagogue that lowers plasma glucose levels in normal and diabetic mice, suggesting the potential for EGF treatment in diabetes.Type: ApplicationFiled: July 16, 2007Publication date: December 17, 2009Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Sung-Ho Ryu, Hye-Young Lee, Kyung-Moo Yea, Byoung-Dae Lee, Young-Chan Chae, Hyeon-Soo Kim, Seon-Hee Kim, Pann-Ghill Suh
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Patent number: 7633323Abstract: A delay locked loop is disclosed which includes a clock selector for selecting and outputting any one of normal-phase and reverse-phase external clocks in response to a clock selection information signal, a first delay line for delaying an output signal from the clock selector by a predetermined amount of time, a second delay line for delaying an inverted version of an output signal from the first delay line by a predetermined amount of time, and a phase mixer for mixing a phase of the output signal from the first delay line and a phase of an output signal from the second delay line and outputting an internal clock having a corrected duty cycle as a result of the mixing.Type: GrantFiled: June 29, 2007Date of Patent: December 15, 2009Assignee: Hynix Semiconductor Inc.Inventor: Hye Young Lee
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Publication number: 20090156087Abstract: The present invention relates to a blowout for a party including: a blow pipe to which air is introduced; a moving part connected to one side of the blow pipe and having an elastic body mounted along one side surface thereof in such a manner as to elastically spread out and roll by a force of the air supplied from the blow pipe; a switch member disposed at the inside of the blow pipe in such a manner as to be switched to an ‘on’ state if the air is introduced to the blow pipe and to an ‘off’ state if the air blowing stops; and an electronic module connected to the switch member so as to generate an audible sound upon the ‘on’ state of the switch member.Type: ApplicationFiled: December 12, 2008Publication date: June 18, 2009Inventor: Hye-Young Lee