Patents by Inventor Cheon Choi
Cheon 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: 20250100565Abstract: A method and apparatus for controlling braking of a vehicle are provided. The apparatus includes an in-wheel motor installed in a wheel to rotate the wheel, an electro-mechanical brake installed in the wheel to perform braking, a vehicular speed sensor to measure a speed of the vehicle, and a processor to: compute a required braking force, in response to receiving a signal initiated by a brake pedal; control braking by distributing the required braking force to the electro-mechanical brake and the in-wheel motor; determine a braking state according to a speed of the vehicle and recompute a braking torque for the in-wheel motor; and in case the electro-mechanical brake fails to operate, control the in-wheel motor to bring the vehicle to a stop.Type: ApplicationFiled: July 8, 2024Publication date: March 27, 2025Applicant: HYUNDAI MOBIS CO., LTD.Inventor: Moon Cheon CHOI
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Patent number: 12060103Abstract: The present disclosure provides a steering control system including a steering angle calculating unit configured to calculate a required steering angle of a vehicle based on a heading angle difference which is a difference between a heading angle of the current vehicle and a heading angle of a traveling road at a target viewpoint, a current spacing distance which is a spacing distance in a vehicle width direction between the current vehicle and the traveling road, and a predicted spacing distance which is a spacing distance in the vehicle width direction between the vehicle and the traveling road at the target viewpoint.Type: GrantFiled: August 12, 2022Date of Patent: August 13, 2024Assignee: HYUNDAI MOBIS CO., LTD.Inventor: Moon Cheon Choi
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Publication number: 20230134824Abstract: The present disclosure provides a steering control system including a steering angle calculating unit configured to calculate a required steering angle of a vehicle based on a heading angle difference which is a difference between a heading angle of the current vehicle and a heading angle of a traveling road at a target viewpoint, a current spacing distance which is a spacing distance in a vehicle width direction between the current vehicle and the traveling road, and a predicted spacing distance which is a spacing distance in the vehicle width direction between the vehicle and the traveling road at the target viewpoint.Type: ApplicationFiled: August 12, 2022Publication date: May 4, 2023Applicant: HYUNDAI MOBIS CO., LTD.Inventor: Moon Cheon CHOI
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Patent number: 11534715Abstract: Provided is a dust cover having excellent moisture control performance which is applied to a car lamp. The dust cover having excellent moisture control performance has excellent lamp humidity adjustment ability, and thus, efficiently removes moisture present inside to prevent moisture dew condensation due to a rapid temperature difference beforehand, and furthermore, maintains humidity inside the lamp low to prevent corrosion or malfunction of mounted components.Type: GrantFiled: September 4, 2020Date of Patent: December 27, 2022Assignee: DesiKhan Co., Ltd.Inventors: Nak Cheon Choi, Eun Young Park, Jong Hyup Kim
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Patent number: 11485372Abstract: Disclosed herein is an apparatus for controlling standalone-type rear wheel steering (RWS), which includes a vehicle speed detection unit for detecting a vehicle speed by communicating with a sensor installed in a vehicle or an Electronic Control Unit (ECU); a steering angle and steering angular velocity detection unit for detecting steering angles and steering angular velocities of front and rear wheels by communicating with a sensor installed in the vehicle or the ECU; a master cylinder pressure detection unit for detecting a master cylinder pressure by communicating with a sensor installed in the vehicle or the ECU; and a controller for determining braking or turning of the vehicle using the information detected using the sensors or received from the ECU, calculating the amount of toe-in when the vehicle is braking or calculating a rear wheel steering angle when the vehicle is turning, and controlling the RWS based thereon.Type: GrantFiled: April 11, 2019Date of Patent: November 1, 2022Assignee: HYUNDAI MOBIS CO., LTD.Inventor: Moon Cheon Choi
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Patent number: 11480328Abstract: An LED lamp having a metal PCB bent polyhedrally and a method for manufacturing the LED lamp is provided, where a base constituting the metal PCB has a rectangular or geometric shape and is configured to have a plurality of base stepped grooves formed spaced apart from each other on the underside thereof in such a manner as to be bent upward or downward from the base to form reflection surfaces continuously, so that at the time when both ends of the base come into contact with the plane, the base has a geometric shape in which the base is located in space through the reflection surfaces continuously arranged.Type: GrantFiled: October 28, 2019Date of Patent: October 25, 2022Assignee: ECOCAB CO., LTD.Inventor: Young Cheon Choi
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Patent number: 11358122Abstract: A moisture absorbent for a vehicle lamp includes a first inorganic material, a second inorganic material, alkali metal phosphate, and a polymer wax are included. A composite moisture absorbent structure includes a first moisture absorbent pack including a powder type moisture absorbent and a second moisture absorbent pack including a capsule type moisture absorbent are embedded.Type: GrantFiled: May 31, 2019Date of Patent: June 14, 2022Assignee: DesiKhan Co., Ltd.Inventors: Sin Jong Hyung, Nak Cheon Choi, You Jin Lee, Jong Hyup Kim
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Publication number: 20220001327Abstract: Provided is a dust cover having excellent moisture control performance which is applied to a car lamp. The dust cover having excellent moisture control performance has excellent lamp humidity adjustment ability, and thus, efficiently removes moisture present inside to prevent moisture dew condensation due to a rapid temperature difference beforehand, and furthermore, maintains humidity inside the lamp low to prevent corrosion or malfunction of mounted components.Type: ApplicationFiled: September 4, 2020Publication date: January 6, 2022Inventors: Nak Cheon CHOI, Eun Young PARK, Jong Hyup KIM
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Patent number: 11080847Abstract: Provided is a magnetic resonance imaging (MRI) apparatus including an acquisition unit configured to acquire an undersampled spectrum in a k-space and a reconstruction unit configured to generate a target image based on the undersampled spectrum, wherein the reconstruction unit includes: a first sub-reconstruction unit configured to perform initial reconstruction on data corresponding to unsampled positions in the k-space by using a Split Bregman algorithm or approximate sparse coding; a second sub-reconstruction unit configured to decompose the initially reconstructed spectrum in the k-space into multiple frequency bands to thereby generate a plurality of individual spectra and perform dictionary learning reconstruction on images respectively corresponding to the decomposed multiple frequency bands by alternating sparse approximation and reconstructing of measured frequencies; and an image generator configured to generate a target image by merging together the reconstructed images respectively correspondingType: GrantFiled: April 30, 2015Date of Patent: August 3, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Artem Sergeevich Migukin, Dmitry Alexandrovich Korobchenko, Mikhail Yurievich Sirotenko, Kirill Arthurovich Gavrilyuk, Praveen Gulaka, Sang-cheon Choi, Michail Nikolaevich Rychagov, Yang Lim Choi
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Publication number: 20200324271Abstract: A moisture absorbent for a vehicle lamp includes a first inorganic material, a second inorganic material, alkali metal phosphate, and a polymer wax are included. A composite moisture absorbent structure includes a first moisture absorbent pack including a powder type moisture absorbent and a second moisture absorbent pack including a capsule type moisture absorbent are embedded.Type: ApplicationFiled: May 31, 2019Publication date: October 15, 2020Inventors: Sin Jong HYUNG, Nak Cheon CHOI, You Jin LEE, Jong Hyup KIM
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Publication number: 20200318826Abstract: An LED lamp having a metal PCB bent polyhedrally and a method for manufacturing the LED lamp is provided, where a base constituting the metal PCB has a rectangular or geometric shape and is configured to have a plurality of base stepped grooves formed spaced apart from each other on the underside thereof in such a manner as to be bent upward or downward from the base to form reflection surfaces continuously, so that at the time when both ends of the base come into contact with the plane, the base has a geometric shape in which the base is located in space through the reflection surfaces continuously arranged.Type: ApplicationFiled: October 28, 2019Publication date: October 8, 2020Inventor: Young Cheon CHOI
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Publication number: 20200097884Abstract: Disclosed is a computer program stored in a computer readable medium including encoded commands.Type: ApplicationFiled: December 20, 2017Publication date: March 26, 2020Inventors: Bo Hoon KIM, Emil Hyunbae ZIN, Nak Cheon CHOI, Young Kun LEE, Keon KIM
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Patent number: 10514298Abstract: A spectrophotometer is provided, which comprises a receiving part diffusing an incident light, a first broadband filter group, and a detector detecting the light having passed through the first broadband filter group, in order to easily select and detect a plurality of lights having specific wavelengths, wherein the first broadband filter group comprises a first broadband filter arranged to have a first angle with respect to an incident direction of light to enable the incident light to pass through a first wavelength band, a second broadband filter arranged to have a second angle, which is different from the first angle, with respect to an incident direction of light to enable the light having passed through the first broadband filter to pass through a second wavelength band, and a first path compensation means for adjusting a path of the light having passed through the second broadband filter to be identical to a path of the light having passed through the first broadband filter, wherein the first broadbandType: GrantFiled: December 1, 2016Date of Patent: December 24, 2019Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han
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Publication number: 20190357799Abstract: A magnetic resonance imaging (MRI) apparatus and a method of controlling the same is disclosed. The MRI apparatus includes a magnetic field generator configured to apply a magnetic field to a head of a subject; a radio frequency (RF) coil configured to apply a pulse to the head to which the magnetic field is applied, and to receive a signal generated in the head; and a processor configured to apply a first inversion recovery pulse to the head by the RF coil, when a magnitude of longitudinal magnetization of one of white matter (WM) and gray matter (GM) of the head is in a first range, suppress a recovery signal corresponding to the longitudinal magnetization of at least one of the WM and GM among recovery signals generated according to the first inversion recovery pulse; and generate a cerebrospinal fluid (CSF) image for at least one slice based on a signal at a point where a magnitude of transverse magnetization generated in the other of the WM and GM of the head is in a second range.Type: ApplicationFiled: October 17, 2017Publication date: November 28, 2019Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang-Cheon CHOI, Dae Ho LEE
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Patent number: 10473744Abstract: A magnetic resonance imaging apparatus includes: a radio frequency (RF) controller configured to control a period of an RF pulse to be applied to an object for a time period that includes a first obtaining time, during which a first inversion RF pulse is applied, and a second obtaining time; and a signal transceiver configured to sequentially receive, during the first obtaining time, a first RF signal for generating a first fluid attenuated inversion recovery (FLAIR) image regarding a first slice of the object and a second RF signal for generating at least one magnetic resonance (MR) image regarding a second slice of the object.Type: GrantFiled: April 8, 2016Date of Patent: November 12, 2019Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Sang-cheon Choi, Yun-ho Nam, Jong-ho Lee, Dae-ho Lee, Yang-su Ryu, Han Jang
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Publication number: 20190315371Abstract: Disclosed herein is an apparatus for controlling standalone-type rear wheel steering (RWS), which includes a vehicle speed detection unit for detecting a vehicle speed by communicating with a sensor installed in a vehicle or an Electronic Control Unit (ECU); a steering angle and steering angular velocity detection unit for detecting steering angles and steering angular velocities of front and rear wheels by communicating with a sensor installed in the vehicle or the ECU; a master cylinder pressure detection unit for detecting a master cylinder pressure by communicating with a sensor installed in the vehicle or the ECU; and a controller for determining braking or turning of the vehicle using the information detected using the sensors or received from the ECU, calculating the amount of toe-in when the vehicle is braking or calculating a rear wheel steering angle when the vehicle is turning, and controlling the RWS based thereon.Type: ApplicationFiled: April 11, 2019Publication date: October 17, 2019Inventor: Moon Cheon CHOI
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Patent number: 10444314Abstract: An MRI apparatus includes a data acquirer configured to under-sample MR signals, respectively received from channel coils included in a radio frequency (RF) multi-coil, at non-uniform intervals to acquire pieces of data set; and an image processor configured to restore pieces of K-space data respectively corresponding to the channel coils by using a positional relationship based on a spatial distance between a reference data set among the acquired pieces of data set and at least two of data set among the acquired pieces of data set, in a K-space.Type: GrantFiled: September 17, 2015Date of Patent: October 15, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Sang-cheon Choi
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Patent number: 10317496Abstract: An MRI apparatus includes: a receive coil assembly including channels, and configured to receive an MR signal from an object; a data generator configured to generate undersampled image data on a k-space based on the MR signal; and a reconstructed image generator configured to generate a first reconstructed image from the undersampled image data using a parallel imaging method, and a second reconstructed image from the undersampled image data using compressed sensing. According to the MRI apparatus, since image reconstruction is performed using random undersampled image data, a parallel imaging method, and compressed sensing, it is possible to increase a speed of image acquisition and, at the same time, to improve the quality of images.Type: GrantFiled: September 30, 2014Date of Patent: June 11, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang Cheon Choi, Joon Soo Kim, Yeol Min Seong, Yang Lim Choi, Praveen Gulaka
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Patent number: 10274563Abstract: Provided are an apparatus and method for sampling magnetic resonance (MR) signals received from each of a plurality of channel coils included in a radio frequency (RF) multi-coil such that intervals between two acquired signals that are adjacent in a first axis direction of a 3D K-space are non-uniform; and restoring an MR image by using the received MR signals.Type: GrantFiled: May 27, 2016Date of Patent: April 30, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Sang-cheon Choi
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Patent number: 10251584Abstract: Correction of a non-invasive blood glucose measurement measured from a video image. Correction includes irradiating white light on the skin, filtering the white light reflected from the skin by a first wavelength filter and a second wavelength filter, obtaining a first signal including a blood glucose signal and a pulse signal based on a video image generated by the white light filtered by the first wavelength filter, obtaining a second signal including a pulse signal based on a video image generated by the white light filtered by the second wavelength filter, obtaining a blood glucose signal by subtracting the second signal from the first signal, and calculating the amount of blood glucose in a subcutaneous blood vessel based on the obtained blood glucose signal. Moreover, fundamental blood glucose signals can be extracted in real time without collecting blood.Type: GrantFiled: November 25, 2016Date of Patent: April 9, 2019Inventors: Seung Min Jin, Il Seung Yang, Yun Mi Bae, Seong Oak Park, Yu Sic Kim, Du Cheon Choi, Mu Hyeop Han