Patents by Inventor Chang Woo Choi
Chang Woo 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: 20240146257Abstract: Aspects of the subject technology provide miniaturization and improved power dissipation for communication systems that include a radio frequency power amplifier. In aspects, a radio frequency power amplifier may be mounted inside a cavity in a primary printed circuit board. Circuits related the power amplifier, such as output matching circuits, biasing circuits, and/or passive components, may be mounted on submodule printed circuit board that itself is mounted to the primary printed circuit board in a stacked configuration above the power amplifier and the cavity containing the power amplifier.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Inventors: Wangmyong WOO, Chang Kyu Choi, Wei-Shun Wang, Ricardo Javier Torres
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Patent number: 11967503Abstract: Provided are a method of depositing a thin film and a method of manufacturing a semiconductor device using the same, and the method of depositing a thin film uses a substrate processing apparatus including a chamber, a substrate support on which a substrate is mounted, a gas supply unit, and a power supply unit that supplies high-frequency and low-frequency power to the chamber, and includes: a step of mounting, on the substrate support, the substrate including a lower thin film deposited under the condition of a process temperature in a low temperature range; a step of depositing an upper thin film on the lower thin film under the condition of the process temperature in the low temperature range; and a step of treating a surface of the upper thin film under the condition of the process temperature in the low temperature range.Type: GrantFiled: June 28, 2021Date of Patent: April 23, 2024Assignee: WONIK IPS CO., LTD.Inventors: Su In Kim, Young Chul Choi, Chang Hak Shin, Min Woo Park, Ji Hyun Kim, Kyung Mi Kim
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Publication number: 20240128022Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.Type: ApplicationFiled: December 6, 2023Publication date: April 18, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
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Publication number: 20240118196Abstract: In the case of a gas in which several gases are mixed, a type and concentration of the gas may be incorrectly measured when measured using only an optical band-pass filter. The invention of the present application is directed to providing a technology in which a plurality of broadband band-pass filters having overlapping regions are provided to calculate a magnitude of absorption for each wavelength band for light passing through each broadband band-pass filter, thereby identifying the presence of a gas of interest and the presence of a gas other than the gas of interest.Type: ApplicationFiled: September 8, 2023Publication date: April 11, 2024Inventors: Cheol Woo NAM, Byung Yul MOON, Eung Yul KIM, Jae Hwan KIM, Chun Ho SHIN, Kwang Hun PARK, Myun Gu CHOI, Chang Hwang CHOI, Yong Geol KIM, Jae Min JEON
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Patent number: 11953273Abstract: Proposed is a heat dissipating device using turbulent flow. In the heat dissipating device, a plurality of block flow paths are formed in parallel inside a block body, a first cap and a second cap are mounted on side surfaces of the respective ends of the block body so as to connect the block flow paths, a working fluid flows into the block flow paths, and the working fluid which has passed through the block flow paths is transferred to the outside. Turbulence generators are mounted inside the block flow paths, and finishing end portions on the respective ends of the turbulence generators are supported by the first cap and the second cap and are positioned inside the block flow paths.Type: GrantFiled: January 28, 2021Date of Patent: April 9, 2024Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATIONInventors: Chang Woo Han, Young Joo Kim, Kang Min Choi, Seung Boong Jeong
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Patent number: 11949881Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.Type: GrantFiled: April 1, 2021Date of Patent: April 2, 2024Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong UniversityInventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
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Patent number: 11935703Abstract: A multilayer electronic component has a body and a non-conductive resin layer. The non-conductive resin layer includes a body cover portion disposed in a region of an external surface of the body in which an electrode layer of an external electrode is not disposed, and an extending portion extending from the body cover portion between the electrode layer and a conductive resin layer of the external electrode, to thereby suppress arc discharge, improve bending strength, and improve moisture resistance.Type: GrantFiled: January 9, 2023Date of Patent: March 19, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Seok Yi, Jung Min Kim, Bon Seok Koo, Chang Hak Choi, Il Ro Lee, Byung Woo Kang, San Kyeong, Hae Sol Kang
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Publication number: 20240075110Abstract: The present invention provides a method for preventing or treating a liver disease selected from the group consisting of non-alcoholic fatty liver, non-alcoholic steatohepatitis and hepatic fibrosis comprising administrating at least one selected from the group consisting of an Ssu72 peptide, a polynucleotide encoding the Ssu72 peptide, and an expression vector comprising the polynucleotide.Type: ApplicationFiled: September 15, 2023Publication date: March 7, 2024Inventors: Chang Woo LEE, Jin Kwan LEE, Hyun Soo KIM, Ji Hyun CHOI, Se Eun BYEON, HAE IN LEE, HYEONJU JO
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Publication number: 20240080320Abstract: A server according to an embodiment includes a processor configured to receive a friend add request for a target account from a user terminal accessed with a user account; based on one of the user account and the target account being a protected account, transmit an approval request for the friend add request to a protector account connected to the protected account; and based on receiving a reply to the approval request from the protector terminal, add the target account to a friend list of the user account.Type: ApplicationFiled: April 27, 2023Publication date: March 7, 2024Inventors: You Jin KIM, Jung Woo CHOI, Jenog Ryeol CHOI, Joong Seon KIM, Hong Chan YUN, Ju Ho CHUNG, Do Hyun YOUN, Hyung Min KIM, Hyun Ok CHOI, Chun Ho KIM, Soo Beom KIM, Min Jeong KIM, Chang Oh HEO, Eun Soo HEO
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Publication number: 20230329644Abstract: The present invention relates to a device for analyzing a bio-signal, and a method therefor, and the method for analyzing a bio-signal comprises the steps of: removing bio-signal noise generated by a sensor; estimating the signal quality of the bio-signal for a preset unit time; classifying the bio-signal for the preset unit time into an abnormal signal or a normal signal; and determining whether an abnormal state episode occurs and a duration time thereof on the basis of the signal quality of the bio-signal for a plurality of unit times and the result of the classification.Type: ApplicationFiled: October 1, 2021Publication date: October 19, 2023Inventors: Byung Hwan LEE, Chang Hyun BAIK, Chang Hyun KIM, Chang Woo CHOI, Hyung Min CHANG, Sung Mi Jo, Hae Na KIM, Dae Sung KIM, Yu Mi JI
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Publication number: 20230329623Abstract: The present invention relates to a device and a method for analyzing an abnormal physiological signal, and the method for analyzing an abnormal physiological signal comprises the steps of: removing bio-signal noise generated by a sensor; estimating the signal quality of the bio-signal for a preset unit time; performing classification of an atrial fibrillation (AF), which is an abnormal signal, on the bio-signal for the unit time to classify same into an AF, which is an abnormal signal, and a normal sinus rhythm (NSR), which is a normal signal; determining whether an AF episode, which is an abnormal state episode, occurs and a duration time thereof, on the basis of the signal quality of preset number of consecutive unit times and the result of the classification of the AF, which is an abnormal signal; and calculating the load of the AF, which is an abnormal signal, on the basis of whether an AF episode, which is an abnormal state episode, occurs and the duration time thereof.Type: ApplicationFiled: October 1, 2021Publication date: October 19, 2023Inventors: Byung Hwan LEE, Chang Hyun BAIK, Chang Hyun KIM, Chang Woo CHOI, Hyung Min CHANG, Sung Mi JO, Hae Na KIM, Dae Sung KIM, Yu Mi JI
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Patent number: 7766296Abstract: A wall mounting structure includes a display screen, a stand, and a base. The stand has an upper end connected to a rear surface of the display screen via a first hinge so as to enable the display screen to be rotated forward and backward. The base is fixed to a lower end of the stand and includes at least two rotatable mounting members formed on a lower part of the base. The rotatable mounting members enable the base to be detachably mounted on mounting brackets of a wall. The wall mounting structure enables a user to not only use a flat panel display on a table, but also to hang the flat panel display on mounting brackets fixed to a wall in an easy and simple manner without disassembling the display screen and the stand assembly from each other.Type: GrantFiled: July 15, 2005Date of Patent: August 3, 2010Assignee: LG Electronics Inc.Inventors: Chang Woo Choi, Jin Uk Baek
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Patent number: 7651058Abstract: A stand assembly for a monitor is provided. The stand assembly includes a base and a stand having an upper end rotatably coupled to a monitor body, and a lower end rotatably coupled to the base. The stand assembly also includes torque correcting means for generating a torque which varies non-linearly with rotation of the stand, thus allowing a tilt angle of a monitor body coupled to the stand assembly to be easily adjusted throughout a large range of motion.Type: GrantFiled: June 9, 2006Date of Patent: January 26, 2010Assignee: LG Electronics Inc.Inventors: Gyu Yeol Cho, Chang Woo Choi
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Patent number: 7384019Abstract: A flat panel display that has a stand is designed to be easily fixed onto a base without a separate immobilization device. The flat panel display includes a display screen, a base installed on a bottom side, and a stand having an upper end pivotably connected to a rear side of the display screen, and a lower end pivotably connected to a top surface of the base. A clamping device is movably installed inside the base. The clamping device is configured to fix the stand onto the base when the stand is folded over the base.Type: GrantFiled: August 12, 2005Date of Patent: June 10, 2008Assignee: LG Electronics Inc.Inventor: Chang Woo Choi
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Patent number: 7198237Abstract: A stand assembly for a monitor is provided. The stand assembly includes a base and a stand having an upper end rotatably coupled to a monitor body, and a lower end rotatably coupled to the base. The stand assembly also includes torque correcting means for generating a torque which varies non-linearly with rotation of the stand, thus allowing a tilt angle of a monitor body coupled to the stand assembly to be easily adjusted throughout a large range of motion.Type: GrantFiled: December 7, 2004Date of Patent: April 3, 2007Assignee: LG Electronics Inc.Inventors: Gyu Yeol Cho, Chang Woo Choi