Patents by Inventor Kwang Cho
Kwang Cho 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).
-
Patent number: 11970566Abstract: Disclosed is a method of manufacturing a polyurethane filter foam having excellent air permeability, elasticity, and restoring force. In the method of manufacturing the polyurethane filter foam, the cell size of the filter foam is made regular by controlling the pressure by adjusting the diameter of the foaming head of a foaming machine, rather than adding a cell opener, cell irregularity caused by poor dispersion of the cell opener is alleviated, and air permeability, porosity, and compression set are excellent.Type: GrantFiled: September 30, 2022Date of Patent: April 30, 2024Assignees: HYUNDAI TRANSYS INC., CHIN YANG CO., LTD.Inventors: Jae Yong Ko, Seung Keon Woo, Young Tae Cho, Won Sug Choi, Sung Yoon Lee, Jae Kwang Lee, Jun Ho Song
-
Publication number: 20240135587Abstract: A method of learning a parameter of a sensor filter and an apparatus for performing the method are provided. The learning method may include performing a simulation on a target image for each spectrum of a sensor filter, obtaining an output value by inputting the simulated image to a vision model for a vision task, and learning a parameter of the sensor filter based on a loss between a label of the vision model and the output value of the vision model.Type: ApplicationFiled: April 13, 2023Publication date: April 25, 2024Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Kwang CHO, Geonwoo Kim, Yang Ho Cho, Dong Kyung Nam
-
Patent number: 11967088Abstract: A target tracking method and apparatus is provided. The target tracking apparatus includes a memory configured to store a neural network, and a processor configured to extract feature information of each of a target included in a target region in a first input image, a background included in the target region, and a searching region in a second input image, using the neural network, obtain similarity information of the target and the searching region and similarity information of the background and the searching region based on the extracted feature information, obtain a score matrix including activated feature values based on the obtained similarity information, and estimate a position of the target in the searching region from the score matrix.Type: GrantFiled: December 2, 2022Date of Patent: April 23, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: HyunJeong Lee, Changbeom Park, Hana Lee, Sung Kwang Cho
-
Patent number: 11963439Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.Type: GrantFiled: August 24, 2022Date of Patent: April 16, 2024Assignee: Rohm and Haas Electronic Materials Korea Ltd.Inventors: Eun-Joung Choi, Young-Kwang Kim, Su-Hyun Lee, So-Young Jung, YeJin Jeon, Hong-Se Oh, Dong-Hyung Lee, Jin-Man Kim, Hyun-Woo Kang, Mi-Ja Lee, Hee-Ryong Kang, Hyo-Nim Shin, Jeong-Hwan Jeon, Sang-Hee Cho
-
Patent number: 11955625Abstract: Provided are a negative electrode active material including a three-dimensional composite. The three-dimensional composite includes secondary particles containing a silicon carbide-based (SiCx, 0<x?1) nanosheet having a bent portion and amorphous carbon. Also provided are a method of producing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.Type: GrantFiled: August 20, 2021Date of Patent: April 9, 2024Assignees: SK On Co., Ltd., UNIST (Ulsan National Institute of Science and Technology)Inventors: Eunjun Park, Joon-Sup Kim, Jaekyung Sung, Yoon Kwang Lee, Tae Yong Lee, Jae Phil Cho
-
Publication number: 20240106639Abstract: Disclosed are a method of calculating a cipher and an electronic device performing the method. The method of calculating the cipher according to an embodiment of the present invention includes reading predetermined secret information t and a first intermediate result based on the secret information t, generating a random value k, calculating a second intermediate result l using the secret information t and the random value k, and performing scalar point multiplication using the first intermediate result and the second intermediate result, wherein the first intermediate result is determined at a different time point from the calculating of the second intermediate result l and stored in a chip and/or memory included in the electronic device.Type: ApplicationFiled: September 15, 2023Publication date: March 28, 2024Applicant: ICTK CO., LTD.Inventor: Kwang Cho Shin
-
Publication number: 20240107181Abstract: An optimization method includes determining first information related to a difference between the color filter spectrum and the color spectrum or a difference between an image transformed by the color transformation matrix and a ground truth (GT) image in the reset color space, determining second information representing smoothness of the color filter spectrum, third information representing a transmittance of the color filter spectrum, calculating a cost value based on the first information, the second information, and the third information, compare the calculated cost value and a threshold, and updating one of the filter spectrum information and the color transformation matrix in response to the calculated cost value being equal to or greater than the threshold.Type: ApplicationFiled: March 31, 2023Publication date: March 28, 2024Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Geonwoo Kim, Sung Kwang Cho, Yang Ho Cho, Dong Kyung Nam
-
Publication number: 20240090328Abstract: The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.Type: ApplicationFiled: October 26, 2023Publication date: March 14, 2024Inventors: Hee-Choon AHN, Young-Kwang KIM, Su-Hyun LEE, Ji-Song JUN, Seon-Woo LEE, Chi-Sik KIM, Kyoung-Jin PARK, Nam-Kyun KIM, Kyung-Hoon CHOI, Jae-Hoon SHIM, Young-Jun CHO, Kyung-Joo LEE
-
Publication number: 20240059935Abstract: The present invention relates to a photocurable adhesive film and a preparation method thereof, and provides an adhesive film having excellent peeling adhesion and creep resistance at both room temperature and high temperature and a low modulus at a low temperature of ?20° C. by using an acrylic monomer having a specific structure in a specific content range. Furthermore, since the adhesive film of the present invention may provide folding reliability and stability of a display device, the adhesive film can be usefully applied as an adhesive of a display device, particularly, a foldable display device field.Type: ApplicationFiled: December 17, 2021Publication date: February 22, 2024Inventors: Seongwoo Kim, Do-Kwang Cho, Youhoon Kim
-
Publication number: 20230372840Abstract: The disclosed gas-liquid separation device separates, from a liquid, gas mixed in the liquid. The gas-liquid separation device includes a body configured to allow mixed fluid to be introduced into a longitudinally central portion thereof, and to have a cylindrical structure having an inner diameter gradually reduced as the body extends from the central portion to opposite ends thereof, a pair of gas discharge pipes respectively provided at the opposite ends of the body and configured to discharge, to an exterior of the body, gas separated from the mixed fluid in an interior of the body, and a pair of liquid discharge pipes respectively provided at the opposite ends of the body and configured to discharge, to the exterior of the body, the mixed fluid from which the gas has been separated.Type: ApplicationFiled: December 16, 2022Publication date: November 23, 2023Inventors: Ho Chan AN, Yeon Ho KIM, Jae Wan KIM, Ho Young JEONG, Yeong Jun KIM, Jae Yeon KIM, Man Hee PARK, Tae Sung KIM, Yeong Kwang CHO, Jun Ho YUN
-
Patent number: 11811320Abstract: A power conversion circuit includes a first and a second power converters for generating a first and a second driving voltages respectively. The second power converter is a switching converter. In a short-circuit detection mode, the first driving voltage is regulated to the first driving level, and the second power converter is configured to operate in a pulse frequency modulation mode to regulate the second driving voltage to a short-circuit detection level, and when a switching frequency of the second power converter exceeds a threshold frequency, a short-circuit condition between the second driving voltage and the first driving voltage is determined.Type: GrantFiled: December 16, 2021Date of Patent: November 7, 2023Assignee: RICHTEK TECHNOLOGY CORPORATIONInventor: Je-Kwang Cho
-
Patent number: 11812531Abstract: A digital-to-analog converter (DAC) for generating an output voltage according to an input code includes a first-type and a second-type sub-DAC's connected in series. The first-type sub-DAC includes a first resistor string and plural first switches, and receives a reference current to determine a first voltage drop. The first switches are controlled by a first portion of the input code to determine a voltage division of the first voltage drop. The second-type sub-DAC includes a second resistor string and plural second switches. The second switches are controlled by a second portion of the input code to determine a portion of the second resistor string to receive the reference current, wherein the portion of the second resistor string and the reference current determines a second voltage drop. The output voltage includes a sum of the second voltage drop and the voltage division of the first voltage drop.Type: GrantFiled: October 26, 2022Date of Patent: November 7, 2023Assignee: RICHTEK TECHNOLOGY CORPORATIONInventor: Je-Kwang Cho
-
Publication number: 20230330564Abstract: A gas-liquid separation device has a structure capable of increasing gas-liquid separation performance. The gas-liquid separation device includes: a housing including a fluid inlet passage, a liquid discharge passage, and a gas discharge passage; and a gas-liquid separation unit that is mounted inside the housing, disposed at a rear side of the fluid inlet passage. The gas-liquid separation unit separates a mixed fluid into a liquid and a gas by inducing rotation of the mixed fluid introduced into the housing through the fluid inlet passage. The gas-liquid separation device further includes a flow stabilization member provided at a rear end of the gas-liquid separation unit and configured to maintain a flow state of the liquid and the gas separated by the gas-liquid separation unit.Type: ApplicationFiled: December 22, 2022Publication date: October 19, 2023Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, Research & Business Foundation SUNGKYUNKWAN UNIVERSITYInventors: Ho Chan An, Yeon Ho Kim, Jae Wan Kim, Ho Young Jeong, Yeong Jun Kim, Jae Yeon Kim, Man Hee Park, Tae Sung Kim, Yeong Kwang Cho, Jun Ho Yun
-
Publication number: 20230318853Abstract: Disclosed are a user terminal and authentication execution device for performing pseudonym 2-factor authentication, and an operating method therefor. The disclosed operating method of the authentication execution device includes receiving a first inborn ID, private key signature information, and a certificate issued by an authentication system from a user terminal, obtaining a second inborn ID and a public key of the user terminal included in the certificate by decrypting the certificate using a public key of the authentication system, performing primary authentication of a user of the user terminal by checking whether the first inborn ID and the second inborn ID match each other, and when the primary authentication is completed, performing secondary authentication of the user by verifying private key signature information with the public key.Type: ApplicationFiled: August 31, 2021Publication date: October 5, 2023Applicant: ICTK Holdings Co., Ltd.Inventors: Dong Hyun KIM, Kwang Cho SHIN, Jae Seong LEE
-
Publication number: 20230275749Abstract: An electronic device which generates and authenticates identification information of a hardware device and an operation method thereof are disclosed. The operation method of the disclosed electronic device includes determining identification information used for authentication of a hardware device using a public key of the hardware device generated from a private key of the hardware device, and managing the identification information.Type: ApplicationFiled: July 30, 2021Publication date: August 31, 2023Applicant: ICTK Holdings Co., Ltd.Inventor: Kwang Cho SHIN
-
Publication number: 20230206392Abstract: An apparatus with image processing includes: one or more processors configured to: generate a full sampling image by demosaicing a first color filter array (CFA)-based input image; based on a trained color conversion model trained for color conversion and noise suppression of the full sampling image, determine a bias and a conversion matrix corresponding to each pixel of the full sampling image; and based on the conversion matrix and the bias, convert a color space of the full sample image, corresponding to the first CFA, into a color space corresponding to a second CFA.Type: ApplicationFiled: September 6, 2022Publication date: June 29, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: SUNG KWANG CHO, Geonwoo KIM, Yang Ho CHO, Deokyoung KANG, Dong Kyung NAM
-
Publication number: 20230198403Abstract: A power conversion circuit includes a first and a second power converters for generating a first and a second driving voltages respectively. The second power converter is a switching converter. In a short-circuit detection mode, the first driving voltage is regulated to the first driving level, and the second power converter is configured to operate in a pulse frequency modulation mode to regulate the second driving voltage to a short-circuit detection level, and when a switching frequency of the second power converter exceeds a threshold frequency, a short-circuit condition between the second driving voltage and the first driving voltage is determined.Type: ApplicationFiled: December 16, 2021Publication date: June 22, 2023Inventor: JE-KWANG CHO
-
Patent number: 11677918Abstract: A method and apparatus for color space conversion are provided. An apparatus for converting a color space includes at least one processor configured to convert an original full image of an original color space to a temporary image of a target color space, estimate a color space mapping parameter between the original color space and the target color space, the color space mapping parameter corresponding to the original full image, obtain a residual vector of the target color space based on the temporary image and the color space mapping parameter, convert the residual vector to a residual image of the target color space, and obtain a target full image of the target color space by combining the residual image with the temporary image.Type: GrantFiled: July 20, 2021Date of Patent: June 13, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Kwang Cho, Yang Ho Cho, Dong Kyung Nam
-
Publication number: 20230156168Abstract: An electronic device includes an image sensor including a color filter having a plurality of color channels, a memory storing a plurality of color conversion matrices and instructions, and a processor. The processor is configured to obtain noise information of a color image captured by the image sensor, select a target matrix from among the plurality of the color conversion matrices based on the obtained noise information, and generate a color converted image by applying the selected target matrix to the color image.Type: ApplicationFiled: May 27, 2022Publication date: May 18, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: YANG HO CHO, Geonwoo KIM, SUNG KWANG CHO, DONG KYUNG NAM
-
Publication number: 20230115606Abstract: A target tracking method and apparatus is provided. The target tracking apparatus includes a memory configured to store a neural network, and a processor configured to extract feature information of each of a target included in a target region in a first input image, a background included in the target region, and a searching region in a second input image, using the neural network, obtain similarity information of the target and the searching region and similarity information of the background and the searching region based on the extracted feature information, obtain a score matrix including activated feature values based on the obtained similarity information, and estimate a position of the target in the searching region from the score matrix.Type: ApplicationFiled: December 2, 2022Publication date: April 13, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: HyunJeong LEE, Changbeom PARK, Hana LEE, Sung Kwang CHO