Patents by Inventor Eun-Chul Park
Eun-Chul Park 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: 11974115Abstract: An active sound design (ASD) tuning device and a method thereof may include an ASD device that generates a virtual engine sound for each vehicle situation and a control device that outputs a composite sound by correcting and synthesizing the virtual engine sound and an internal sound measured for each vehicle situation based on a binaural vehicle impulse response (BVIR).Type: GrantFiled: September 8, 2021Date of Patent: April 30, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Ki Chang Kim, Dong Chul Park, Eun Soo Jo, Jin Sung Lee
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CATALYST FOR ELECTRODE OF FUEL CELL, METHOD FOR PREPARING THE SAME AND FUEL CELL COMPRISING THE SAME
Publication number: 20240128476Abstract: The present disclosure relates to a catalyst for a fuel cell electrode including an active particle which includes a core comprising platinum, a transition metal excluding platinum, and an oxide of a non-transition metal; and a shell disposed on the core and including platinum, wherein the active particle includes platinum and the non-transition metal in a molar ratio of 100:1.80 to 100:4.00, a method of preparing the same, and a fuel cell including the same.Type: ApplicationFiled: September 29, 2023Publication date: April 18, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Jung Hoon KIM, Jong Jun PARK, Eun Young YOU, Lim KIM, Sung Chul LEE, Jong Myung LEE, Young Ick CHO -
Publication number: 20240091730Abstract: The present invention relates to the stabilization of an effective ingredient by using a mineral material. In the present invention, the effective ingredient can be stably supported using the mineral material, and a microcapsule obtained by the manufacturing method according to the present invention, when discharged to nature, causes no environmental problems due to encapsulation ingredients thereof being the same as soil ingredients, and thus can avoid micro-plastic issues.Type: ApplicationFiled: December 28, 2021Publication date: March 21, 2024Applicants: LG HOUSEHOLD & HEALTH CARE LTD., IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Jun Seok YEOM, Eun Chul CHO, Ji Won LIM, Hyo Jin BONG, Seon A JEONG, No Jin PARK, Woo Sun SHIM
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Publication number: 20240092228Abstract: A seat for a vehicle, includes a second row center seat and a second row side seat provided on a partition wall positioned rearward of a driver seat, the second row center seat may move leftward or rightward, and an interval between the seats may be increased in a state in which the second row center seat is moved in a right direction away from the second row side seat, which makes it possible to maximally prevent body contact between a passenger in the second row center seat and a passenger in the second row side seat.Type: ApplicationFiled: January 20, 2023Publication date: March 21, 2024Applicants: Hyundai Motor Company, Kia Corporation, Hyundai Transys Inc.Inventors: Jung Sang YOU, Yong Chul Kim, Dae Hee Lee, Eun Sue Kim, Jae Hoon Cho, Han Kyung Park, Jae Sung Shin, Hae Dong Kwak, Jun Sik Hwang, Gwon Hwa Bok
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Publication number: 20240067056Abstract: The present disclosure relates to a vehicle rear seat including: a center seat; and side seats located on the left and right of the center seat, wherein, the center seat is capable of protruding by moving the center seat forward with respect to the side seats, and in the state in which the center seat protrudes forward, it is possible to increase an inter-passenger distance so that physical contact between the passenger of the center seat and the passenger of each of the side seats can be prevented as much as possible.Type: ApplicationFiled: March 6, 2023Publication date: February 29, 2024Inventors: Jung Sang You, Yong Chul Kim, Dae Hee Lee, Eun Sue Kim, Jae Hoon Cho, Han Kyung Park, Jae Sung Shin, Hae Dong Kwak, Jun Sik Hwang, Gwon Hwa Bok
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Patent number: 7933359Abstract: Provided is a polar transmitter which increases a modulation rate using a multi-phase generator and includes: a data processor which processes and separates incoming data to an amplitude component and a phase component; a multi-phase generator which generates a plurality of carriers having a plurality of phase components by processing a carrier having a certain frequency; a selection output part which selects and outputs a carrier having a phase substantially equal to the phase component; and a carrier output part which synthesizes the output carrier with the amplitude component and outputs a carrier. Accordingly, the modulation rate of the carrier can be increased and the bandwidth can be extended with the related art polar transmitter. Therefore, the polar transmitter is applicable to the wideband communications, the multi-mode, and the multi-band.Type: GrantFiled: December 4, 2006Date of Patent: April 26, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-hoon Lee, Seung-woo Kim, Jae-sup Lee, Eun-chul Park
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Patent number: 7701300Abstract: A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and a second signal. The first signal is generated based on a VCO and a PPF. Also, the second signal is selected from a plurality of frequency divided signals which are generated by dividing a signal generated in the VCO via a plurality of dividers.Type: GrantFiled: July 7, 2006Date of Patent: April 20, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Eun Chul Park, Hyun Soo Chae, Hoon Tae Kim
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Patent number: 7668263Abstract: A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and a second signal. The first signal is generated based on a VCO and a PPF. Also, the second signal is selected from a plurality of frequency divided signals which are generated by dividing a signal generated in the VCO via a plurality of dividers.Type: GrantFiled: October 31, 2008Date of Patent: February 23, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Eun Chul Park, Hyun Soo Chae, Hoon Tae Kim
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Patent number: 7580486Abstract: A multi-input multi-frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver. The frequency synthesizing apparatus may generate an output from a greater number of high frequency signals by using one multi-input single side band (SSB) mixer. The multi-input SSB mixer may generate a signal whose frequency is an addition of frequencies of two signals selected from a signal selection control unit, or a difference of frequencies therebetween. According to a circuit configuration of the multi-input SSB mixer, the signal selection control unit may select more than two signals.Type: GrantFiled: May 24, 2006Date of Patent: August 25, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Choong-Yul Cha, Eun Chul Park, Hoon Tae Kim
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Patent number: 7536163Abstract: An apparatus and method for converting a frequency of a high frequency signal received from an antenna in an ultra wide band communication system transmitting and receiving using at least two reference frequencies. The method includes generating generation frequencies having frequencies set to convert the frequency of the high frequency signal and mixing the frequency of the high frequency signal and the generation frequencies in at least two stages.Type: GrantFiled: May 25, 2005Date of Patent: May 19, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Min-suk Kang, Tuan-anh Phan, Eun-chul Park, Chun-deok Suh, Chang-wam Kim, Sang-gug Lee
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Publication number: 20090061811Abstract: A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and a second signal. The first signal is generated based on a VCO and a PPF. Also, the second signal is selected from a plurality of frequency divided signals which are generated by dividing a signal generated in the VCO via a plurality of dividers.Type: ApplicationFiled: October 31, 2008Publication date: March 5, 2009Applicant: SAMSUNG ELECTRONCS CO., LTD.Inventors: Eun Chul Park, Hyun Soo Chae, Hoon Tae Kim
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Publication number: 20080315950Abstract: Integrated circuit devices include a pair of field effect transistors having shared source terminals, shared drain terminals and shared gate terminals, which may be treated herein as being electrically coupled in parallel. A switch circuit is also provided, which is configured to drive a body terminal of a first one of the pair of field effect transistors with an alternating sequence of first and second unequal body voltages. This alternating sequence is synchronized with a first clock signal. The switch circuit is also configured to drive a body terminal of a second one of the pair of field effect transistors with an alternating sequence of third and fourth unequal body voltages, which is synchronized with a second clock signal. The first and third body voltages may have equivalent magnitudes and the second and fourth body voltages may have equivalent magnitudes. The first and second clock signals may have 50% duty cycles and may be 180 degrees out-of-phase relative to each other.Type: ApplicationFiled: September 3, 2008Publication date: December 25, 2008Inventors: Jeongwook Koh, Chun-Deok Suh, Eun-Chul Park
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Patent number: 7450925Abstract: A receiver includes first switches for applying either differential signals of an oscillator or a data signal of a transmitter to down-converting mixers; a frequency conversion unit for mixing and applying to the down-converting mixers quadrature signals generated from an arbitrary clock signal generator and the oscillator, and having a PPF for changing a phase difference of I/Q signals according to a control voltage externally applied; a phase difference detection part for checking a phase difference between the I/Q signals and generating the control voltage to be applied to the PPF according to the phase difference so as to correct the phase difference; third switches for applying the data signal processed through the down-converting mixers, filters, and amplifiers to A/D converters and applying the I/Q signals having a predetermined frequency to the phase difference detection part; and a control unit for switching the first and third switches.Type: GrantFiled: January 24, 2006Date of Patent: November 11, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-su Chae, Hoon-tae Kim, Eun-chul Park
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Patent number: 7397317Abstract: A quadrature signal generator capable of phase-tuning with respect to all of four generated quadrature signals. The quadrature signal generator includes four phase tuning units each having two input terminals, one receiving a differential signal, the other being grounded, and changing a phase of the differential signal to thereby generate quadrature signals. Accordingly, it is possible to tune phases of all the four generated quadrature signals. It is also possible to prevent the amplitude of quadrature signals from being deviated from a reference value.Type: GrantFiled: February 1, 2006Date of Patent: July 8, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-chul Park, Chun-deok Suh, Choong-yul Cha
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Patent number: 7345527Abstract: An ultra wideband filter is provided that filters an input signal using a pair of cross-coupled transistors with a small size and small power consumption. The ultra wideband filter includes a reference current generator unit generating a reference current using a bias signal of a predetermined level, a transconductor unit that is biased by the reference current and converts a predetermined input voltage into a current of a predetermined amount to output the current if the input voltage is applied thereto, and a filter unit that outputs a predetermined output voltage corresponding to the output current of the transconductor unit using a plurality of cross-coupled transistors and capacitors. The filter unit may include cross-coupled nMOS and pMOS transistors, and first and second capacitors respectively connected to respective drain terminals of the nMOS and pMOS transistors. Accordingly, the ultra wideband filter can be designed in a minimum size.Type: GrantFiled: February 1, 2006Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-chul Park, Han-seung Lee, Gyu-hyung Cho, Hee-seok Han
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Publication number: 20070298732Abstract: A polar transmitter using a binary phase shift key (BPSK) method includes a data dividing unit which divides input data into an amplitude component and a phase component, a frequency synthesizer which produces an I value of a passband having a phase component of an I signal and a Q value of a passband having a phase component of a Q signal, a polar modulation circuit for the I signal which produces an I carrier wave to the I signal using the amplitude component from the data dividing unit and the I value from the frequency synthesizer, a polar modulation circuit for the Q signal which produces a Q carrier wave to the Q signal using the amplitude component and the Q value, and a carrier wave producing unit which combines the I carrier wave and the Q carrier wave thus to produce a carrier wave.Type: ApplicationFiled: December 6, 2006Publication date: December 27, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong-hoon Lee, Seung-woo Kim, Jae-sup Lee, Eun-chul Park, Young-sik Kim
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Publication number: 20070291875Abstract: Provided is a polar transmitter which increases a modulation rate using a multi-phase generator and includes: a data processor which processes and separates incoming data to an amplitude component and a phase component; a multi-phase generator which generates a plurality of carriers having a plurality of phase components by processing a carrier having a certain frequency; a selection output part which selects and outputs a carrier having a phase substantially equal to the phase component; and a carrier output part which synthesizes the output carrier with the amplitude component and outputs a carrier. Accordingly, the modulation rate of the carrier can be increased and the bandwidth can be extended with the related art polar transmitter. Therefore, the polar transmitter is applicable to the wideband communications, the multi-mode, and the multi-band.Type: ApplicationFiled: December 4, 2006Publication date: December 20, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong-hoon Lee, Seung-woo Kim, Jae-sup Lee, Eun-chul Park
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Patent number: 7161441Abstract: The present invention relates to a distributed oscillator, and more particularly, to a high frequency distributed oscillator using coupled transmission lines. According to the present invention, coupled transmission lines capable of increasing the frequency selectivity are used as transmission lines. Signal interference occurs among the coupled transmission lines because of mutual approximation. The coupled transmission lines serve as a filter due to the signal interference. A phase noise characteristic can be thus increased.Type: GrantFiled: February 17, 2005Date of Patent: January 9, 2007Assignee: Korea Advanced Institute of Science and TechnologyInventors: Euisik Yoon, Eun-Chul Park
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Patent number: 7119332Abstract: A probe is provided for an SPM (Scanning Probe Microscope), and a method is provided for fabricating the probe in which a double side alignment process is not required to simplify the fabricating. The probe includes a cantilever; a body supporting the cantilever; and a tip formed at an end of the cantilever, wherein the cantilever, the body and the tip are made of silicon, and boron is diffused into the cantilever and a predetermined area of the body.Type: GrantFiled: February 12, 2004Date of Patent: October 10, 2006Assignee: Korea Advanced Institute of Science and TechnologyInventors: Il-Joo Cho, Eun-Chul Park, Songcheol Hong, Euisik Yoon
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Publication number: 20060176104Abstract: An ultra wideband filter is provided that filters an input signal using a pair of cross-coupled transistors with a small size and small power consumption. The ultra wideband filter includes a reference current generator unit generating a reference current using a bias signal of a predetermined level, a transconductor unit that is biased by the reference current and converts a predetermined input voltage into a current of a predetermined amount to output the current if the input voltage is applied thereto, and a filter unit that outputs a predetermined output voltage corresponding to the output current of the transconductor unit using a plurality of cross-coupled transistors and capacitors. The filter unit may include cross-coupled nMOS and pMOS transistors, and first and second capacitors respectively connected to respective drain terminals of the nMOS and pMOS transistors. Accordingly, the ultra wideband filter can be designed in a minimum size.Type: ApplicationFiled: February 1, 2006Publication date: August 10, 2006Inventors: Eun-chul Park, Han-seung Lee, Gyu-hyung Cho, Hee-seok Han