Patents by Inventor Chan Ki Cho
Chan Ki 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).
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Patent number: 11967991Abstract: A distributed antenna system (DAS) for multi-carrier and multi-frequency band based on an O-RAN standard in an open radio access network (O-RAN)-based mobile communication network is provided. The DAS includes an O-RAN remote unit (RU) connected to a fronthaul network according to an O-RAN split option specification of base station transceiver systems (BTSs), and comprising a plurality of O-RAN RUs to accommodate a plurality of carriers and a plurality of frequency bands, and a channel combiner to which outputs of the plurality of O-RAN RUs are combined. The channel combiner is an analog combiner. The DAS further includes an optical distribution unit (ODU) connected to the analog combiner, and a radio unit (RU) connected to the ODU. The RU includes an optical receiving unit (ORU), a high power amplifier (HPA), a low noise amplifier (LNA), and a duplexer or filter.Type: GrantFiled: May 5, 2023Date of Patent: April 23, 2024Assignee: ADRF KOREA, Inc.Inventors: Chong Youn Chun, Chan Ki Cho
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Publication number: 20240083384Abstract: A vehicle seat reinforcement device includes a leg portion mounted on a floor panel, a seat cushion frame slidably mounted on the leg portion, and a load reinforcing structure connected between the leg portion and the seat cushion frame, wherein when a seat belt anchorage load is transferred to the seat cushion frame, the seat cushion frame is locked to the leg portion by the load reinforcing structure.Type: ApplicationFiled: February 3, 2023Publication date: March 14, 2024Applicants: Hyundai Motor Company, Kia Corporation, Daechang Seat Co.,LTD-Dongtan, Hyundai Transys Inc.Inventors: Sang Soo LEE, Chan Ho JUNG, Mu Young KIM, Sang Hark LEE, Ho Suk JUNG, Deok Soo LIM, Sang Do PARK, In Sun BAEK, Sin Chan YANG, Chan Ki CHO, Myung Soo LEE, Jae Yong JANG, Jun Sik HWANG, Ho Sung KANG, Hae Dong KWAK, Hyun Tak KO
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Patent number: 11889923Abstract: Proposed is an actuator for a recliner which can be manufactured with components having simple structures to reduce weight, and functions of a seat operated through different cables are independently performed stably. The actuator for a recliner includes: a casing part, and a drive part provided with a worm wheel gear located inside the casing part and rotated by an operation of a motor, and a rack gear configured to move elastically toward a first or second side of the drive part in engagement with the worm wheel gear, with cables being coupled respectively to the first and second sides of the rack gear.Type: GrantFiled: February 10, 2022Date of Patent: February 6, 2024Assignee: DAECHANG SEAT CO., LTD-DONGTANInventors: Chan Ki Cho, Myung Soo Lee, Sin Chan Yang, In Sun Baek
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Patent number: 11890975Abstract: Proposed is a folding seat which can be folded by manipulating a lever at various positions so as to improve the utilization of space around the folding seat. The folding seat includes: a seat frame; a seat back frame located at a rear of the seat frame and coupled rotatably to the seat frame or a vehicle; and a first latch part provided with a side support, a first end of the side support being coupled to the vehicle and a second end of the side support being coupled to the rear of the seat frame through a rotation shaft such that the seat frame is rotatable.Type: GrantFiled: October 18, 2021Date of Patent: February 6, 2024Assignee: DAECHANG SEAT CO., LTD-DONGTANInventors: Jae Kwang Shin, Myung Soo Lee, Chan Ki Cho
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Publication number: 20240034200Abstract: Disclosed is a seat adjustment apparatus for a mobility vehicle, in which a seat cushion slides in a forward/rearward direction while moving upward or downward when the seat cushion is tilted, thereby allowing an occupant to take a stable posture. In one aspect, the seat apparatus comprises 1) a fixing bracket fixed to a floor surface; 2) a setting bracket disposed above the fixing bracket and connected to a back frame so that the back frame is rotatable; 3) a guide unit disposed at a front end of the fixing bracket and a front end of the setting bracket; 4) a guide part disposed at a rear end of the fixing bracket and a rear end of the setting bracket; and 5) a drive unit connected to the guide unit.Type: ApplicationFiled: January 24, 2023Publication date: February 1, 2024Inventors: Sang Soo Lee, Chan Ho Jung, Mu Young Kim, Sang Hark Lee, Ho Suk Jung, Deok Soo Lim, Sang Do Park, Jae Yong Jang, Hyun Tak Ko, Ho Sung Kang, Hae Dong Kwak, In Sun Baek, Sin Chan Yang, Jun Sik Hwang, Chan Ki Cho, Myung Soo Lee
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Patent number: 11801777Abstract: A load support apparatus for a lumbar support assembly is proposed, in which reinforcing ribs are arranged on a lateral surface and a front surface of a concave portion, the load support apparatus maintaining bearing power for supporting an occupant and having a reduced weight. The load support apparatus includes a main support unit including a main plate formed in the shape of a plate, a concave portion formed by one portion of the main plate protruding backward, with a groove being formed in front of the concave portion, and a rib portion formed by protruding from the main plate toward the groove or backward from the main plate.Type: GrantFiled: January 7, 2022Date of Patent: October 31, 2023Assignee: DAECHANG SEAT CO., LTD-DONGTANInventors: Chan Ki Cho, Gun Young Park, Jin Oh Kim, Tae Hong Han
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Publication number: 20230275663Abstract: A distributed antenna system (DAS) for multi-carrier and multi-frequency band based on an O-RAN standard in an open radio access network (O-RAN)-based mobile communication network is provided. The DAS includes an O-RAN remote unit (RU) connected to a fronthaul network according to an O-RAN split option specification of base station transceiver systems (BTSs), and comprising a plurality of O-RAN RUs to accommodate a plurality of carriers and a plurality of frequency bands, and a channel combiner to which outputs of the plurality of O-RAN RUs are combined. The channel combiner is an analog combiner. The DAS further includes an optical distribution unit (ODU) connected to the analog combiner, and a radio unit (RU) connected to the ODU. The RU includes an optical receiving unit (ORU), a high power amplifier (HPA), a low noise amplifier (LNA), and a duplexer or filter.Type: ApplicationFiled: May 5, 2023Publication date: August 31, 2023Applicant: ADRF KOREA, Inc.Inventors: Chong Youn CHUN, Chan Ki CHO
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Patent number: 11716145Abstract: Provided is a distributed antenna system (DAS) for multi-frequency band and multi-carrier equipped with an open radio access network (O-RAN) remote unit (RU) according to an O-RAN technology standard for building a next-generation radio infrastructure. To this end, the DAS for multi-carrier and multi-frequency band based on an O-RAN standard includes an O-RAN RU connected to a fronthaul network according to an O-RAN split option specification of base station transceiver systems (BTSs), and including a plurality of O-RAN RUs to accommodate a plurality of carriers and a plurality of frequency bands; and a channel combiner to which outputs of the plurality of O-RAN RUs are combined.Type: GrantFiled: November 17, 2021Date of Patent: August 1, 2023Assignee: ADRF KOREA, Inc.Inventors: Chong Youn Chun, Chan Ki Cho
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Patent number: 11705960Abstract: A millimeter-wave repeater may be provided to cover a radio shaded area, in a system for the millimeter-wave repeater. The millimeter-wave repeater may provide a service by changing a signal of a millimeter-wave band to an intermediate frequency band, and then changing the signal to the millimeter-wave band again.Type: GrantFiled: June 10, 2021Date of Patent: July 18, 2023Assignee: ADRF KOREA, Inc.Inventors: Chan Ki Cho, Baek yong Park
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Patent number: 11672342Abstract: Proposed is a folding seat that is capable of being folding to various positions by controlling a lever and the folding seat is capable of improving utilization of space around the folding seat. According to an embodiment of the present disclosure, the folding seat includes: a seat frame; a seat back frame cross-arranged in back of the seat frame, the seat back frame having a first side rotatably coupled to the seat frame; and a locking portion coupled at a first side thereof to the seat back frame and rotatably coupled at a second side thereof to the seat frame at a position between the seat frame and the seat back frame, wherein the locking portion is configured to be inserted into a rear portion of the seat frame or to be separated from the seat frame according to an operation thereof.Type: GrantFiled: September 9, 2021Date of Patent: June 13, 2023Assignee: DAECHANG SEAT CO., LTD-DONGTANInventors: Jae Kwang Shin, Myung Soo Lee, Chan Ki Cho
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Patent number: 11673491Abstract: Proposed is a support driver for a seat and a support assembly including the same. The support driver is configured to operate within a limited space while supporting an occupant comfortably and safely. The support assembly has a structure in which the links push the central portion of the cushion in close contact therewith while remaining in intersection with each other. Advantageously, the links are able to push the cushion with a minimum amount of power within a limited space.Type: GrantFiled: May 10, 2021Date of Patent: June 13, 2023Assignee: DAECHANG SEAT CO., LTD-DONGTANInventors: Chan Ki Cho, Gun Young Park, Jin Oh Kim, Jun Kyu Park, Jeon Il Kang
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Patent number: 11648863Abstract: A support driver for a seat and a support assembly including the same that is using a tube and a structure of a mat that is moved by an inflation and a deflation of the tube. According to an embodiment of the present disclosure, the support driver coupled to a seat frame includes: a support portion coupled to the seat frame; a tube coupled to the support portion; and a mat coupled to the support portion so as to allow the mat to be movable in a direction that is away from the support portion or in a direction that is adjacent to the support portion, with the tube being provided therebetween, in which the tube is configured to push the mat by being inflated according to an operation of a pump that is connected to the tube by a hose.Type: GrantFiled: July 6, 2021Date of Patent: May 16, 2023Assignee: DAECHANG SEAT CO., LTD-DONGTANInventors: Chan Ki Cho, Gun Young Park, Jin Oh Kim, Jun Kyu Park, Jeon Il Kang
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Patent number: 11603021Abstract: Disclosed are a seat frame assembly and a method of manufacturing the same whereby adhesion of a reinforcing material attached to a seat frame is improved to secure rigidity of the seat frame and process speed is improved. According to one embodiment disclosed herein, seat frame assembly includes: a frame configured such that a portion of each of opposite sides is bent forward, and supporting an upper body of an occupant; and side members joined to the opposite sides of the frame, respectively, each of the side members including a groove formed in a surface being in close contact with the frame, wherein a portion of the frame that is surface-joined to each of the side members is provided with a protrusion inserted into the groove.Type: GrantFiled: December 26, 2018Date of Patent: March 14, 2023Assignee: Daechang Seat Co., LtdāDongtanInventors: Chan Ki Cho, Hyun Chul Woo, Kyoung Min Cho, Hun Yeong Jun
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Publication number: 20230067773Abstract: Provided is a distributed antenna system (DAS) for multi-frequency band and multi-carrier equipped with an open radio access network (O-RAN) remote unit (RU) according to an O-RAN technology standard for building a next-generation radio infrastructure. To this end, the DAS for multi-carrier and multi-frequency band based on an O-RAN standard includes an O-RAN RU connected to a fronthaul network according to an O-RAN split option specification of base station transceiver systems (BTSs), and including a plurality of O-RAN RUs to accommodate a plurality of carriers and a plurality of frequency bands; and a channel combiner to which outputs of the plurality of O-RAN RUs are combined.Type: ApplicationFiled: November 17, 2021Publication date: March 2, 2023Applicant: ADRF KOREA, Inc.Inventors: Chong Youn CHUN, Chan Ki CHO
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Publication number: 20230025228Abstract: Proposed is a lumbar support assembly including a mat formed by connecting wires in such a manner as to take shape in the form of a net and connected to a seat frame in such a manner as to be rotatable forward or backward, a tension unit comprising first and second cables, respective first end portions of the first and second cable being connected to opposite sides, respectively, of the seat frame, and respective second end portions thereof extending to the mat, and a drive unit mounted under a center portion of the mat and connected to the respective second end portions of the first and second end portions, the drive unit being configured to pull or release the first and second cables.Type: ApplicationFiled: November 8, 2021Publication date: January 26, 2023Inventors: Chan Ki Cho, Gun Young Park, Jin Oh Kim, Jun Kyu Park, Kang Seok Seo
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Publication number: 20220399935Abstract: A millimeter-wave repeater may be provided to cover a radio shaded area, in a system for the millimeter-wave repeater. The millimeter-wave repeater may provide a service by changing a signal of a millimeter-wave band to an intermediate frequency band, and then changing the signal to the millimeter-wave band again.Type: ApplicationFiled: June 10, 2021Publication date: December 15, 2022Applicant: ADRF KOREA, Inc.Inventors: Chan Ki CHO, Baek yong PARK
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Publication number: 20220379774Abstract: A multi-position seat configured to maximize usability thereof through various changes in the positions of a seat back and a seat cushion may include a height assembly configured to move a base frame mounted on a vehicle body, a slide assembly configured to move a seat cushion frame, which is positioned above the base frame and is connected to the base frame via a link mechanism, upwards and downwards by sliding action of the link mechanism in a forward and backward direction, a tilt assembly configured to move a rear end portion of the seat cushion frame upwards and downwards, and a seat back frame hingedly coupled to a rear end portion of the base frame to be reclined.Type: ApplicationFiled: November 22, 2021Publication date: December 1, 2022Applicants: Hyundai Motor Company, Kia Corporation, Hyundai Transys, Inc., Daechang Seat Co., LTD-DongtanInventors: Eun Sue KIM, Seung Sik HAN, Hong Heui LEE, Myung Hoe KIM, Jong Tak LEE, Hae Dong KWAK, Cheol Hwan YOON, Jun Sik HWANG, In Sun BAEK, Sin Chan YANG, Myung Soo LEE, Chan Ki CHO
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Patent number: 11485260Abstract: Proposed is a lumbar support assembly having an air bladder and components for operating the air bladder and facilitating the assembly and maintenance thereof. The lumbar support assembly includes: a suspension mat having a first hole formed at the inner side thereof, and having a second hole formed at one edge thereof; an air bladder having a first clip hole, which is formed at one edge thereof and overlaps with the first hole; a pouch including a pump and having a second clip hole, which is formed at one edge thereof and overlaps with the second hole; a fixing clip that can be mounted in the first clip hole or the second clip hole; and an electronic valve which has a first tube connected to the air bladder and a second tube connected to the pump and which is coupled to the rear surface of the suspension mat.Type: GrantFiled: June 24, 2019Date of Patent: November 1, 2022Assignee: DAECHANG SEAT CO.Inventors: Chan Ki Cho, Jin Oh Kim, Kyoung Min Cho
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Publication number: 20220340062Abstract: A support driver for a seat and a support assembly including the same that is using a tube and a structure of a mat that is moved by an inflation and a deflation of the tube. According to an embodiment of the present disclosure, the support driver coupled to a seat frame includes: a support portion coupled to the seat frame; a tube coupled to the support portion; and a mat coupled to the support portion so as to allow the mat to be movable in a direction that is away from the support portion or in a direction that is adjacent to the support portion, with the tube being provided therebetween, in which the tube is configured to push the mat by being inflated according to an operation of a pump that is connected to the tube by a hose.Type: ApplicationFiled: July 6, 2021Publication date: October 27, 2022Inventors: Chan Ki CHO, Gun Young PARK, Jin Oh KIM, Jun Kyu PARK, Jeon Il KANG
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Patent number: 11472324Abstract: A combination structure of a seat frame includes: a first and a second side cushion frames installed on a first and a second sides of a seat, and configured to slide forward and rearward, wherein the first and the second sides of the seat are opposite to each other; a center cushion frame provided between the side cushion frames and having a first side fixed to the first side cushion frame; and a support guide device connected between a second side of the center cushion frame and the second side cushion frame, and configured to guide a sliding movement of each of the second side cushion frame and the center cushion frame while supporting weights of the second side cushion frame and the center cushion frame.Type: GrantFiled: June 7, 2021Date of Patent: October 18, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, Daechang Seat Co., LTD-Dongtan, Hyundai Transys Inc.Inventors: Min Ju Lee, Seung Hyun Kim, Byung Yong Choi, Sang Hyun Lee, Seon Chae Na, Chan Ki Cho, In Chang Hwang, Dong Hwan Kim, Young Woon Choi, Jae Jin Lee