Patents by Inventor Sang-Hoon Kwak
Sang-Hoon Kwak 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: 10719139Abstract: A sensing system and method are provided. The sensing system includes a sensor unit that is configured to output a voltage having a magnitude that corresponds to a detected physical quantity and an amplification unit that is configured to amplify a magnitude in the output of the sensor unit to a constant gain. An offset removal unit is configured to remove a direct current (DC) offset from an output amplified by the amplification unit to generate a first detection signal. An inversion circuit unit is configured to invert the first detection signal to generate a second detection signal. A microcomputer is configured to then calculate the physical quantity detected by the sensor unit based on the first detection signal and the second detection signal.Type: GrantFiled: November 30, 2017Date of Patent: July 21, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Hun Kong, Seong Han Kim, Gun Soo Kang, Sang Hoon Kwak
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Publication number: 20180348892Abstract: A sensing system and method are provided. The sensing system includes a sensor unit that is configured to output a voltage having a magnitude that corresponds to a detected physical quantity and an amplification unit that is configured to amplify a magnitude in the output of the sensor unit to a constant gain. An offset removal unit is configured to remove a direct current (DC) offset from an output amplified by the amplification unit to generate a first detection signal. An inversion circuit unit is configured to invert the first detection signal to generate a second detection signal. A microcomputer is configured to then calculate the physical quantity detected by the sensor unit based on the first detection signal and the second detection signal.Type: ApplicationFiled: November 30, 2017Publication date: December 6, 2018Inventors: Hun Kong, Seong Han Kim, Gun Soo Kang, Sang Hoon Kwak
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Publication number: 20180091123Abstract: Disclosed is an apparatus for generating high-quality sine waves through a simple circuit structure. The apparatus comprises a square wave generator for generating a plurality of square waves different in frequency from one to another; a combined circuit for combining the plurality of square waves into a synthetic wave; and a filter circuit for filtering the synthetic wave through a low-pass filter. Also, a method for generating high-quality sine waves is provided.Type: ApplicationFiled: December 9, 2016Publication date: March 29, 2018Applicant: HYUNDAI MOTOR COMPANYInventors: Jae Hyeon PARK, Sang Hoon KWAK, Gun Soo KANG
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Patent number: 9544990Abstract: An analog control system configured to operate a converter in an electric vehicle battery charging system is provided. The analog control system includes a pulse width modulation (PWM) output unit that is configured to output a PWM signal to the converter and an integrated control unit that is configured to sense an input voltage and an output voltage of the converter. The analog control system may be implemented on a printed circuit board having a first ground voltage stage connected to the PWM output unit, a second ground voltage stage separated from the first ground voltage stage by a first predetermined interval and connected to the integrated control unit. A filtering unit is disposed between the first ground voltage stage and the second ground voltage stage to pass an output signal of a predetermined band from the PWM unit to the integrated control unit.Type: GrantFiled: November 25, 2014Date of Patent: January 10, 2017Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jung Hwan Na, Sang Hoon Kwak, Tae Hwan Chung, Gun Soo Kang
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Patent number: 9531286Abstract: A method for control of an electric vehicle converter is provided. The converter is adapted to drop voltage and a counting unit is adapted to count a signal generated by the converter. The method includes inputting a signal that is generated by the converter to the counting unit during operation of the converter and counting the signal. Additionally, whether a counting result of the counting unit corresponds to a predetermined interval is determined and the converter is determined to be out-of-order when the counting result does not correspond to the predetermined interval.Type: GrantFiled: December 7, 2011Date of Patent: December 27, 2016Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Sung Kyu Kim, Jaewon Lee, Tae Hwan Chung, Ki Jong Lee, Jong Kyong Lim, Sang Hoon Kwak
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Patent number: 9400293Abstract: A voltage sensing circuit of a converter senses input and output voltages of a converter with only one sensing circuit. The voltage sensing circuit is capable of reducing the number of the components for a controller and the volume thereof to save cost, and detecting whether the discontinuous mode (DCM) is entered or not, thereby to apply a separate control algorithm thereto when the DCM is entered.Type: GrantFiled: October 14, 2013Date of Patent: July 26, 2016Assignee: HYUNDAI MOTOR COMPANYInventors: Jung Hwan Na, Tae Hwan Chung, Sang Hoon Kwak, Hyun Wook Seong
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Publication number: 20160023561Abstract: An analog control system configured to operate a converter in an electric vehicle battery charging system is provided. The analog control system includes a pulse width modulation (PWM) output unit that is configured to output a PWM signal to the converter and an integrated control unit that is configured to sense an input voltage and an output voltage of the converter. The analog control system may be implemented on a printed circuit board having a first ground voltage stage connected to the PWM output unit, a second ground voltage stage separated from the first ground voltage stage by a first predetermined interval and connected to the integrated control unit. A filtering unit is disposed between the first ground voltage stage and the second ground voltage stage to pass an output signal of a predetermined band from the PWM unit to the integrated control unit.Type: ApplicationFiled: November 25, 2014Publication date: January 28, 2016Inventors: Jung Hwan Na, Sang Hoon Kwak, Tae Hwan Chung, Gun Soo Kang
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Publication number: 20140354265Abstract: A voltage sensing circuit of a converter senses input and output voltages of a converter with only one sensing circuit. The voltage sensing circuit is capable of reducing the number of the components for a controller and the volume thereof to save cost, and detecting whether the discontinuous mode (DCM) is entered or not, thereby to apply a separate control algorithm thereto when the DCM is entered.Type: ApplicationFiled: October 14, 2013Publication date: December 4, 2014Applicant: HYUNDAI MOTOR COMPANYInventors: Jung Hwan NA, Tae Hwan CHUNG, Sang Hoon KWAK, Hyun Wook SEONG
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Patent number: 8880262Abstract: Disclosed herein is a system and method for incipient drive of a slow charger for a vehicle. Specifically, an incipient drive entry of the slow charger used when a battery is charged in an electric vehicle (EV) or a plug-in hybrid electric vehicle (PHEV) may be performed. The method includes operating, by a controller, a regulator by outputting a control pilot (CP) signal from electric vehicle supply equipment (EVSE). Additionally, the method includes operating, by the controller, a flip-flop by outputting a driving signal from the regulator and operating a switching mode power supply (SMPS) by outputting a driving signal from the flip-flop. The method further includes resetting, by the controller, the flip-flop by outputting a reset signal from a central processing unit (CPU) turned on by the SMPS.Type: GrantFiled: April 18, 2013Date of Patent: November 4, 2014Assignee: Hyundai Motor CompanyInventors: Sang Hoon Kwak, Jee Hye Jeong, Dong Jun Lee, Gyu Yeong Choe, Gun Soo Kang
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Patent number: 8802062Abstract: Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.Type: GrantFiled: April 28, 2006Date of Patent: August 12, 2014Assignee: LG Household & Healthcare Ltd.Inventors: Ji-Young Kim, Jong-Ho Kim, Sug-Youn Chang, Sei-Young Yun, Hae-Young Yang, Sang-Hoon Kwak
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Patent number: 8652446Abstract: Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.Type: GrantFiled: November 19, 2003Date of Patent: February 18, 2014Assignee: LG Household & Healthcare Ltd.Inventors: Ji-Young Kim, Jong-Ho Kim, Sug-Youn Chang, Sei-Young Yun, Hae-Young Yang, Sang-Hoon Kwak
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Publication number: 20120292989Abstract: Control of a converter for an electric vehicle may control the converter of the electric vehicle where the converter is adapted to drop voltage and a counting unit is adapted to count a signal generated by the converter. The control includes inputting a signal generated by the converter to the counting unit during operation of the converter; counting the signal by the counting unit; determining whether a counting result of the counting unit corresponds to a predetermined interval; and deciding that the converter is out-of-order in a case that the counting result does not correspond to the predetermined interval.Type: ApplicationFiled: December 7, 2011Publication date: November 22, 2012Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventors: Sung Kyu Kim, Jaewon Lee, Tae Hwan Chung, Ki Jong Lee, Jong Kyong Lim, Sang Hoon Kwak
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Publication number: 20120134936Abstract: A tooth whitener is provided, including a water-in-oil (W/O) emulsion phase including: a discontinuous phase comprising a peroxide, a hydrophilic solvent, and a polyol, and a continuous phase comprising a glycerol monooleate, a polymer and a polyol, wherein the tooth whitener is flowable upon being applied to teeth and is solidified by the action of moisture after being applied to teeth, and then is adhered and fixed to teeth, and wherein the glycerol monooleate is in an amount of 15% to 95% by weight, based on total weight of the tooth whitener composition.Type: ApplicationFiled: January 6, 2012Publication date: May 31, 2012Applicant: LG HOUSEHOLD & HEALTH CARE LTD.Inventors: Sang-Hoon Kwak, Sei-Young Yun, Kyo-Tae Moon, Sang-Nyun Kim, Han-Soo Kim, Sug-Youn Chang
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Publication number: 20080219935Abstract: Disclosed herein is a breath freshener whose phase is changed depending on the condition of use. A breath freshener of W/O emulsion phase comprises a monoglyceride as a main base, a polymer, an effective component for breath freshening, and a solvent. A breath freshener of solution phase comprises a monoglyceride as a main base, a polyol, a polymer, an effective component for breath freshening, and a solvent. Since the breath fresheners are sufficiently flowable to spray when being sprayed into the oral cavity, they are easy to use. In addition, the breath fresheners are phase-changed into a cubic phase by moisture, e.g., saliva, after being sprayed into the oral cavity, resulting in an increase in the viscosity and adhesiveness of the breath fresheners. Therefore, the effective breath freshening ingredient is slowly released from the breath fresheners, and as a result, continuous breath freshening effects are achieved.Type: ApplicationFiled: July 7, 2002Publication date: September 11, 2008Inventors: Sang-Hoon Kwak, Byung-Jun Kim, Sang-Jin Kang, Sei-Young Yun, Hoo-Deok Kim, Sang-Nyun Kim
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Publication number: 20080193392Abstract: Disclosed herein is a tooth whitener using glycerol monooleate. The tooth whitener is a composition that exhibits teeth whitening effects when being applied to teeth. Specifically, the tooth whitener comprises a glycerol monooleate, a polyol, a polymer, a peroxide and a hydrophilic solvent, and has a W/O emulsion phase. The tooth whitener is flowable before being applied to teeth and is spreadable when being applied to teeth. In addition, the tooth whitener is solidified by the action of moisture, such as saliva, after being applied to teeth, and can thus be adhered and fixed to the teeth. Further-more, changes in viscosity of the tooth whitener with varying temperature can he minimized and the release rate of the whitening ingredient can he controlled by the addition of polyol.Type: ApplicationFiled: March 17, 2006Publication date: August 14, 2008Applicant: LG HOUSEHOLD & HEALTH CARE LTD.Inventors: Sang-Hoon Kwak, Sei-Young Yun, Han-Soo Kim, Sug-Youn Chang, Sang-Nyun Kim, Kyo-Tae Moon
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Publication number: 20060193793Abstract: Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.Type: ApplicationFiled: April 28, 2006Publication date: August 31, 2006Inventors: Ji-Young Kim, Jong-Ho Kim, Sug-Youn Chang, Sei-Young Yun, Hae-Young Yang, Sang-Hoon Kwak
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Publication number: 20040136927Abstract: Disclosed herein is a pair of dry type patches for teeth whitening, having a patch for upper teeth and a patch for lower teeth, in which the patch for upper teeth has a shape different from the patch for lower teeth, and each patch has a controlled width and shape such that the contact area of each patch with gums is minimized. In the patch for upper teeth, a central portion covering right and left upper central incisors is widest. In the patch for lower teeth, either portion covering right and left lower canine teeth is widest. Since the dry type patches covers all the portions of the teeth while minimizing the contact area with gums, no or little irritation is caused and wearability is excellent.Type: ApplicationFiled: November 19, 2003Publication date: July 15, 2004Inventors: Ji-Young Kim, Jong-Ho Kim, Sug-Youn Chang, Sei-Young Yun, Hae-Young Yang, Sang-Hoon Kwak