Patents by Inventor Jae-hyun Koo
Jae-hyun Koo 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: 11955529Abstract: A semiconductor device includes a substrate and a gate structure disposed over the substrate. The gate structure includes gate electrode layers and interlayer insulation structures that are alternately stacked with each other. The semiconductor device includes a dielectric structure disposed over the substrate to contact a sidewall surface of the gate structure, and a channel layer disposed on a sidewall surface of the dielectric structure over the substrate. Each of the interlayer insulation structure includes an insulation layer and a metal-organic framework layer that are disposed on the same plane.Type: GrantFiled: December 6, 2021Date of Patent: April 9, 2024Assignee: SK HYNIX INC.Inventors: Won Tae Koo, Jae Hyun Han
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Patent number: 11943927Abstract: A semiconductor memory device includes a tunnel insulating layer, a data storage layer, and a blocking insulating layer that are sequentially disposed. The tunnel insulating layer includes Metal Organic Frameworks (MOF) having a lower dielectric constant than a dielectric constant of the blocking insulating layer.Type: GrantFiled: August 18, 2021Date of Patent: March 26, 2024Assignee: SK hynix Inc.Inventors: Jae Hyun Han, Won Tae Koo
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Publication number: 20240098382Abstract: An image processing device including: a decision pixel manager for setting a decision area for a defect candidate pixel, and determining a first decision pixel and a second decision pixel, based on first phase information of pixels included in the decision area with respect to a first modulation frequency of a sensing light source among the pixels; a target pixel determiner for calculating a phase difference between the first decision pixel and the second decision pixel, based on second phase information of the pixels with respect to a second modulation frequency of the sensing light source, and determining the defect candidate pixel as a target pixel, corresponding to that the phase difference exceeds a predetermined reference value; and a phase corrector for changing a phase of the target pixel, based on the phase difference.Type: ApplicationFiled: February 28, 2023Publication date: March 21, 2024Applicant: SK hynix Inc.Inventors: Woo Young JEONG, Ja Min KOO, Tae Hyun KIM, Jae Hwan JEON, Chang Hun CHO
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Patent number: 7653859Abstract: A system, an apparatus and a method for transmitting/receiving data coded by a low density parity check matrix code are provided. The apparatus for transmitting data coded by a low density parity check code includes: a low density parity check encoder for encoding input data based on the low density parity check code; and a bit puncturer for puncturing columns in an order of columns which least degrade a performance caused by puncturing in the low density check code according to a code rate of an output data. Accordingly, the low density parity check code having superior performance can be implemented to the next generation mobile communication system supporting various code rates.Type: GrantFiled: April 22, 2005Date of Patent: January 26, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Eoi-Young Choi, Jaehong Kim, Jae-hyun Koo, Seung-bum Suh
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Patent number: 7577218Abstract: A signal acquisition apparatus and method for reducing a false alarm rate are disclosed. The apparatus includes a comparator for detecting a first peak by comparing a correlation value of a received signal with a first threshold and detecting second peaks in a sample interval of the detected first peak based on a second threshold which is different from the first threshold. Thus, a signal is acquired based on a number of the detected second peaks. Accordingly, the false alarm rate due to the noise can be reduced while the detection probability is maintained even at a high SNR.Type: GrantFiled: December 23, 2005Date of Patent: August 18, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Yun-young Kim, Jae-hyun Koo, Yeon-gon Cho, Jae-ho Roh
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Patent number: 7271678Abstract: A frequency generation apparatus and a method are provided. The frequency generation apparatus for generating a plurality of center frequencies for use in multi-band hopping communication, includes: an oscillator generating an oscillation frequency; a reference frequency generator multiplying the oscillation frequency by a first multiplication rate to generate a reference frequency; a compensation frequency generator multiplying the oscillation frequency by a second multiplication rate to generate a compensation frequency for compensating for the influence of a frequency offset of the oscillation frequency; and a center frequency generator generating the plurality of center frequencies using the reference frequency and the compensation frequency. Therefore, by compensating for the influence of a frequency offset of an oscillation frequency on the generation of center frequencies, it is possible to generate stable center frequencies.Type: GrantFiled: September 23, 2005Date of Patent: September 18, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Woo-kyung Lee, Jae-hyun Koo, Wan-jin Kim
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Publication number: 20070081613Abstract: An ultra wideband network transmitter and receiver, and a method capable of switching to a high-speed mode or a low-speed mode are provided. The transmitter includes a multi-band orthogonal frequency division multiplexing (MB-OFDM) modem; a direct sequence code division multiple access (DS-CDMA) modem; a mode switch which switches to the MB-OFDM modem or the DS-CDMA modem according to a mode control signal; a phase lock loop (PLL) which locks a frequency used for MB-OFDM type modulation or the DS-CDMA type modulation; and a central processing unit (CPU) controls the PLL and mode switch. The receiver includes an MB-OFDM modem; an DS-CDMA modem; an automatic gain controller; an analog-to-digital converter; an PLL; a mode switch; and an CPU. The method includes receiving a command to transmit data; and switching to an MB-OFDM modem to select to a high-speed operation mode.Type: ApplicationFiled: July 21, 2006Publication date: April 12, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Wan-jin Kim, Jae-hyun Koo
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Patent number: 7129867Abstract: A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.Type: GrantFiled: July 5, 2005Date of Patent: October 31, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Wan-jin Kim, Jae-hyun Koo
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Publication number: 20060140314Abstract: A signal acquisition apparatus and method for reducing a false alarm rate are disclosed. The apparatus includes a comparator for detecting a first peak by comparing a correlation value of a received signal with a first threshold and detecting second peaks in a sample interval of the detected first peak based on a second threshold which is different from the first threshold. Thus, a signal is acquired based on a number of the detected second peaks. Accordingly, the false alarm rate due to the noise can be reduced while the detection probability is maintained even at a high SNR.Type: ApplicationFiled: December 23, 2005Publication date: June 29, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-young Kim, Jae-hyun Koo, Yeon-gon Cho, Jae-ho Roh
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Publication number: 20060083326Abstract: A multi-band orthogonal frequency division multiplexing (OFDM) system transmits the same symbol at least two times, and a receiving end can receive transmission data from a transmitting end accurately even when an error occurs from a wireless resource used by the multi-band OFDM system. To this end, the multi-band OFDM system has a transmitting end which selects one among at least three symbols being repetitively transmitted at least two times, and transmits the selected symbol by using different wireless resources so that the selected symbol is not consecutively transmitted, and a receiving end which receives the symbols from the transmitting end.Type: ApplicationFiled: October 17, 2005Publication date: April 20, 2006Inventors: Jae-ho Roh, Jae-hyun Koo, Sung-hyun Chung, Jae-min Ahn, Min-Joong Rim
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Publication number: 20060077887Abstract: A method is provided for reducing error occurring when a receiving end of a multiband OFDM system estimates original data from the received data. The multiband OFDM system, which transmits data using at last two radio resources, maps the data to at least two mapping data among a plurality of mapping data not to overlap each other and transmits the mapped data at least two times.Type: ApplicationFiled: October 12, 2005Publication date: April 13, 2006Inventors: Jae-ho Roh, Jae-hyun Koo
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Publication number: 20060072689Abstract: Disclosed is a matched filter and a method for performing cross correlation thereof. The matched filter includes a demultiplexer for demultiplexing an input sample signal into a predetermined number of signals; and cross correlators that perform a cross correlation of each of the demultiplexed sample signals with a predetermined sequence. Therefore, when the matched filter of the present invention is applied to a UWB system having a high sampling rate, the cross correlation operation can be performed at a high rate simply by using low-rate multipliers.Type: ApplicationFiled: September 28, 2005Publication date: April 6, 2006Inventors: Yun-young Kim, Sung-hyun Chung, Jae-min Ahn, Min-joong Rim, Jae-ho Roh, Jae-hyun Koo
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Publication number: 20060068720Abstract: A frequency generation apparatus and a method are provided. The frequency generation apparatus for generating a plurality of center frequencies for use in multi-band hopping communication, includes: an oscillator generating an oscillation frequency; a reference frequency generator multiplying the oscillation frequency by a first multiplication rate to generate a reference frequency; a compensation frequency generator multiplying the oscillation frequency by a second multiplication rate to generate a compensation frequency for compensating for the influence of a frequency offset of the oscillation frequency; and a center frequency generator generating the plurality of center frequencies using the reference frequency and the compensation frequency. Therefore, by compensating for the influence of a frequency offset of an oscillation frequency on the generation of center frequencies, it is possible to generate stable center frequencies.Type: ApplicationFiled: September 23, 2005Publication date: March 30, 2006Inventors: Woo-kyung Lee, Jae-hyun Koo, Wan-jin Kim
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Publication number: 20060001558Abstract: A DC offset correction apparatus and method of a receiver in a multiband-hopping communication system is provided. The DC offset correction apparatus of the receiver in the communication system which hops to a plurality of bands, includes a controller for generating and outputting a plurality of DC offset correction signals different from each other for the respective bands; a plurality of digital-to-analog converters (DACs) for receiving, digital-to-analog converting and outputting the plurality of the DC offset correction signals from the controller; an analog multiplexer (MUX) for switching to output one of the plurality of the DC offset correction signals output from the plurality of the DACs, respectively; and an adder for adding and outputting an input signal with the output signal of the analog MUX. Accordingly, the DC offset correction apparatus can be implemented by low-speed DACs and the fast analog MUX that are relatively small-sized and low-cost elements.Type: ApplicationFiled: July 5, 2005Publication date: January 5, 2006Inventors: Wan-jin Kim, Jae-hyun Koo
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Publication number: 20050271154Abstract: A method for seamlessly receiving a symbol from a transmitting end at a receiving end even when error occurs in a certain radio resource of a multiband OFDM system that transmits a same symbol at least two times. The multiband OFDM system includes a transmitting end selecting two radio resources from at least three radio resources and consecutively transmitting a symbol using the selected radio resources, and a receiving end receiving the symbol from the transmitting end.Type: ApplicationFiled: June 8, 2005Publication date: December 8, 2005Inventors: Jae-ho Roh, Jae-hyun Koo, Jae-Min Ahn, Min-joong Rim, Sung-hyun Chung
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Publication number: 20050246616Abstract: A system, an apparatus and a method for transmitting/receiving data coded by a low density parity check matrix code are provided. The apparatus for transmitting data coded by a low density parity check code includes: a low density parity check encoder for encoding input data based on the low density parity check code; and a bit puncturer for puncturing columns in an order of columns which least degrade a performance caused by puncturing in the low density check code according to a code rate of an output data. Accordingly, the low density parity check code having superior performance can be implemented to the next generation mobile communication system supporting various code rates.Type: ApplicationFiled: April 22, 2005Publication date: November 3, 2005Inventors: Eoi-Young Choi, Jaehong Kim, Jae-hyun Koo, Seung-bum Suh